3COM CORP
424B3, 1995-09-12
COMPUTER PERIPHERAL EQUIPMENT, NEC
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<PAGE>

                                               Filed pursuant to Rule 424(b)(3)
                                               Registration No. 33-62297

                      [LETTERHEAD OF CHIPCOM CORPORATION]
                               September 11, 1995

Dear Stockholder:

    As  most of you are aware, Chipcom Corporation has entered into an agreement
to combine with 3Com Corporation ("3Com"). At a Special Meeting of  Stockholders
to  be held on  October 12, 1995 (the  "Special Meeting"), you  will be asked to
consider and approve the Merger Agreement.

    The Chipcom Board of Directors has unanimously approved the Merger Agreement
and recommends  that  you vote  FOR  the approval  and  adoption of  the  Merger
Agreement.

    Our Board believes that the merger should enable the Company to benefit from
a  broader range of products  to meet the evolving  computer networking needs of
our  customers,  a  larger  sales   force  and  geographically  more   expansive
distribution  channel, access  to 3Com's  technology base  and the  potential to
leverage 3Com's investments in research and development and its expertise in low
cost of design and efficiencies in manufacturing.

    All stockholders  are cordially  invited to  attend the  Special Meeting  in
person.  However, whether or not you plan  to attend the Special Meeting, please
complete, sign and date  the accompanying proxy card  and return it promptly  in
the  enclosed postage-prepaid envelope.  If you attend  the Special Meeting, you
may vote in person if  you wish, even though  you have previously returned  your
proxy.  It is very  important that your  shares be represented  and voted at the
Special Meeting. Your prompt cooperation will be greatly appreciated.

                                          Sincerely,

                                          Rob Held
                                          PRESIDENT AND CHIEF EXECUTIVE OFFICER
<PAGE>
                              CHIPCOM CORPORATION
                            SOUTHBOROUGH OFFICE PARK
                               118 TURNPIKE ROAD
                       SOUTHBOROUGH, MASSACHUSETTS 01772
                            ------------------------

                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS

                                   TO BE HELD

                                OCTOBER 12, 1995

To the Stockholders of
Chipcom Corporation

    NOTICE IS HEREBY GIVEN that a Special Meeting of Stockholders (the  "Special
Meeting")  of Chipcom Corporation,  a Delaware corporation  ("Chipcom"), will be
held on Thursday, October 12,  1995, at the offices of  Hale and Dorr, 60  State
Street,  Boston, Massachusetts,  commencing at  9:00 a.m.,  local time,  for the
following purposes:

        1.   To consider  and  vote upon  a proposal  to  approve and  adopt  an
    Agreement  and Plan of Merger (the "Merger Agreement"), dated as of July 26,
    1995, by  and among  3Com Corporation,  a California  corporation  ("3Com"),
    Chipcom  Acquisition Corporation, a Delaware  corporation and a wholly-owned
    subsidiary of  3Com ("Sub"),  and Chipcom,  pursuant to  which, among  other
    things,  (a) Sub  will be merged  with and  into Chipcom, which  will be the
    surviving corporation, and Chipcom will become a wholly-owned subsidiary  of
    3Com  (the "Merger")  and (b)  each outstanding  share of  Common Stock, par
    value $.02 per share, of Chipcom ("Chipcom Common Stock") will be  converted
    into  the right  to receive 1.06  shares of  Common Stock, no  par value, of
    3Com; and

        2.  To  transact such  other business as  may properly  come before  the
    Special Meeting or any adjournments or postponements thereof.

    Stockholders  of record at  the close of  business on September  7, 1995 are
entitled to notice of and to vote at the Special Meeting and any adjournments or
postponements thereof.

    All stockholders  are cordially  invited to  attend the  Special Meeting  in
person.  However, to ensure your representation  at the Special Meeting, you are
urged to complete and sign the enclosed proxy card and return it as promptly  as
possible in the enclosed postage-prepaid envelope.

                                          By Order of the Board of Directors

                                          Robert P. Badavas
                                          SECRETARY
September 11, 1995

    WHETHER  OR NOT YOU  PLAN TO ATTEND  THE MEETING, PLEASE  COMPLETE, SIGN AND
DATE YOUR PROXY  CARD AND  RETURN IT  PROMPTLY IN  THE ENCLOSED  POSTAGE-PREPAID
ENVELOPE. DO NOT SEND ANY STOCK CERTIFICATES WITH THE ENCLOSED PROXY CARD.
<PAGE>
                                3COM CORPORATION

                                      AND

                              CHIPCOM CORPORATION
                               ------------------

                      CHIPCOM CORPORATION PROXY STATEMENT
                               ------------------

                          3COM CORPORATION PROSPECTUS

    This  Proxy  Statement/Prospectus is  being furnished  to holders  of Common
Stock,  par  value  $.02  per   share  ("Chipcom  Common  Stock"),  of   Chipcom
Corporation,   a  Delaware  corporation  ("Chipcom"),  in  connection  with  the
solicitation of  proxies by  the Board  of Directors  of Chipcom  (the  "Chipcom
Board")  for use  at the Special  Meeting of Chipcom  Stockholders (the "Chipcom
Special Meeting") to be held  on Thursday, October 12,  1995, at the offices  of
Hale  and Dorr, 60 State Street, Boston, Massachusetts, commencing at 9:00 a.m.,
local time, and at any adjournments or postponements thereof.

    This Proxy  Statement/Prospectus  also  constitutes  a  prospectus  of  3Com
Corporation, a California corporation ("3Com"), with respect to up to 19,504,000
shares of Common Stock, no par value ("3Com Common Stock"), of 3Com to be issued
in  the Merger (as defined herein) in exchange for outstanding shares of Chipcom
Common Stock, including shares issued  or issuable upon exercise of  outstanding
options.  All information contained in  this Proxy Statement/Prospectus relating
to 3Com has been supplied by 3Com,  and all information relating to Chipcom  has
been supplied by Chipcom.

                            ------------------------

    SEE  "RISK FACTORS" BEGINNING ON PAGE 18 FOR CERTAIN INFORMATION THAT SHOULD
BE CONSIDERED BY CHIPCOM STOCKHOLDERS.

                            ------------------------

THE SECURITIES TO BE  ISSUED PURSUANT TO  THIS PROXY STATEMENT/PROSPECTUS  HAVE
 NOT  BEEN APPROVED OR DISAPPROVED BY  THE SECURITIES AND EXCHANGE COMMISSION
   OR ANY STATE SECURITIES  COMMISSION NOR HAS  THE SECURITIES AND  EXCHANGE
    COMMISSION  OR ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY
     OR   ADEQUACY    OF    THIS    PROXY    STATEMENT/PROSPECTUS.    ANY
                REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

                            ------------------------

    This Proxy Statement/Prospectus and the accompanying form of proxy are first
being mailed to stockholders of Chipcom on or about September 11, 1995.

       The date of this Proxy Statement/Prospectus is September 11, 1995.
<PAGE>
                             AVAILABLE INFORMATION

    3Com  and  Chipcom  are subject  to  the informational  requirements  of the
Securities Exchange  Act  of 1934,  as  amended  (the "Exchange  Act"),  and  in
accordance  therewith file reports, proxy  statements and other information with
the Securities and  Exchange Commission (the  "Commission"). The reports,  proxy
statements  and other information filed by  3Com and Chipcom with the Commission
can be inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549, and  at
the Commission's Regional Offices located at 7 World Trade Center, New York, New
York  10048 and  500 West Madison  Street, Suite 1400,  Chicago, Illinois 60601.
Copies of such material also can  be obtained from the Public Reference  Section
of  the Commission, Washington, D.C. 20549  at prescribed rates. The 3Com Common
Stock and the  Chipcom Common Stock  are traded on  the Nasdaq National  Market.
Reports  and other information concerning 3Com and Chipcom can also be inspected
at the offices of the National  Association of Securities Dealers, Inc.,  Market
Listing Section, 1735 K Street, N.W., Washington, D.C. 20006.

    3Com  has filed  with the  Commission a  Registration Statement  on Form S-4
(together with any amendments thereto,  the "Registration Statement") under  the
Securities  Act of 1933, as amended (the  "Securities Act"), with respect to the
shares of 3Com Common Stock to be issued pursuant to the Merger Agreement.  This
Proxy Statement/Prospectus does not contain all the information set forth in the
Registration  Statement. Such  additional information  may be  obtained from the
Commission's principal office in Washington,  D.C. Statements contained in  this
Proxy  Statement/Prospectus or in any document incorporated by reference in this
Proxy Statement/Prospectus as to the contents of any contract or other  document
referred to herein or therein are not necessarily complete, and in each instance
reference  is made to  the copy of such  contract or other  document filed as an
exhibit to  the  Registration  Statement  or  such  other  document,  each  such
statement being qualified in all respects by such reference.

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

    The  following 3Com documents filed with  the Commission are incorporated by
reference in this Proxy Statement/Prospectus:

        1.  3Com's Annual Report on Form 10-K for the fiscal year ended May  31,
    1995.

        2.  3Com's Current Report on Form 8-K filed on August 1, 1995.

        3.    The  description  of  3Com's  capital  stock  contained  in 3Com's
    Registration Statement on Form 8-A filed on September 22, 1989.

        4.  The description of 3Com's Common Stock purchase rights contained  in
    3Com's Registration Statement on Form 8-A/A filed on January 23, 1995.

    The  following Chipcom documents filed  with the Commission are incorporated
by reference in this Proxy Statement/Prospectus:

        1.   Chipcom's Annual  Report on  Form 10-K  for the  fiscal year  ended
    December 31, 1994.

        2.  Chipcom's Quarterly Reports on Form 10-Q for the three-month periods
    ended April 1, 1995 and July 1, 1995.

        3.  Chipcom's Current Reports on Form 8-K filed on June 19, 1995, August
    3, 1995 and August 4, 1995.

    All documents and reports subsequently filed by 3Com and Chipcom pursuant to
Section  13(a), 13(c), 14  or 15(d) of the  Exchange Act after  the date of this
Proxy Statement/Prospectus and prior to the date of the Chipcom Special  Meeting
shall   be   deemed   to   be   incorporated   by   reference   in   this  Proxy
Statement/Prospectus and  to be  part hereof  from the  date of  filing of  such
documents  or reports.  Any statement  contained in  a document  incorporated or
deemed to be incorporated by reference herein

                                       2
<PAGE>
shall be  deemed  to  be modified  or  superseded  for purposes  of  this  Proxy
Statement/Prospectus  to the extent that a  statement contained herein or in any
other subsequently filed document which also is or is deemed to be  incorporated
by reference herein modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of this Proxy Statement/Prospectus.

    THIS  PROXY STATEMENT/PROSPECTUS  INCORPORATES DOCUMENTS  BY REFERENCE WHICH
ARE NOT  PRESENTED HEREIN  OR  DELIVERED HEREWITH.  SUCH DOCUMENTS  (OTHER  THAN
EXHIBITS TO SUCH DOCUMENTS UNLESS SUCH EXHIBITS ARE SPECIFICALLY INCORPORATED BY
REFERENCE)  ARE AVAILABLE TO ANY PERSON, INCLUDING ANY BENEFICIAL OWNER, TO WHOM
THIS PROXY  STATEMENT/PROSPECTUS  IS  DELIVERED, ON  WRITTEN  OR  ORAL  REQUEST,
WITHOUT  CHARGE, IN  THE CASE  OF DOCUMENTS RELATING  TO 3COM,  DIRECTED TO 3COM
CORPORATION, 5400  BAYFRONT  PLAZA,  SANTA CLARA,  CALIFORNIA  95052  (TELEPHONE
NUMBER  (408)  764-5000),  ATTENTION: INVESTOR  RELATIONS,  OR, IN  THE  CASE OF
DOCUMENTS RELATING  TO CHIPCOM,  DIRECTED TO  CHIPCOM CORPORATION,  SOUTHBOROUGH
OFFICE  PARK, 118  TURNPIKE ROAD,  SOUTHBOROUGH, MASSACHUSETTS  01772 (TELEPHONE
NUMBER (508) 460-8900), ATTENTION: INVESTOR RELATIONS. IN ORDER TO ASSURE TIMELY
DELIVERY OF  THE REQUESTED  MATERIAL  BEFORE THE  CHIPCOM SPECIAL  MEETING,  ANY
REQUEST SHOULD BE MADE PRIOR TO OCTOBER 4, 1995.

    NO  PERSONS HAVE  BEEN AUTHORIZED  TO GIVE  ANY INFORMATION  OR TO  MAKE ANY
REPRESENTATION OTHER THAN THOSE CONTAINED IN THIS PROXY STATEMENT/PROSPECTUS  IN
CONNECTION  WITH THE SOLICITATION OF PROXIES  OR THE OFFERING OF SECURITIES MADE
HEREBY AND, IF  GIVEN OR MADE,  SUCH INFORMATION OR  REPRESENTATION MUST NOT  BE
RELIED   UPON  AS  HAVING  BEEN  AUTHORIZED  BY  3COM  OR  CHIPCOM.  THIS  PROXY
STATEMENT/PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION  OF
ANY  OFFER  TO BUY,  ANY  SECURITIES, OR  THE SOLICITATION  OF  A PROXY,  IN ANY
JURISDICTION TO OR FROM  ANY PERSON TO WHOM  IT IS NOT LAWFUL  TO MAKE ANY  SUCH
OFFER  OR SOLICITATION IN SUCH JURISDICTION.  NEITHER THE DELIVERY OF THIS PROXY
STATEMENT/PROSPECTUS NOR  ANY DISTRIBUTION  OF SECURITIES  MADE HEREUNDER  SHALL
UNDER  ANY CIRCUMSTANCES CREATE AN IMPLICATION THAT  THERE HAS BEEN NO CHANGE IN
THE AFFAIRS OF 3COM  OR CHIPCOM SINCE  THE DATE HEREOF  OR THAT THE  INFORMATION
HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.

    3Com,  AccessBuilder,  Boundary  Routing,  CardBoard,  CELLplex,  EtherLink,
LANplex, LinkBuilder, NETBuilder, Parallel Tasking and TokenLink are  registered
trademarks of 3Com. 3ComFacts, FDDILink, Impact, LinkSwitch, MSH, SuperStack and
Transcend  are  trademarks of  3Com.  Aperture is  a  trademark of  3Com Primary
Access. Arpeggio  is a  registered trademark  of 3Com  Sonix Ltd.  Chipcom,  the
Chipcom  logo,  Galactica, ONcore  and StarBridge  are registered  trademarks of
Chipcom. InfiNET,  OpenHub, ONdemand,  ONline, ONsemble,  PowerRing,  StackJack,
StackSystem,  StackWay, SwitchCentral and TriChannel  are trademarks of Chipcom.
This Proxy Statement/Prospectus may also  include trademarks and trade names  of
companies other than 3Com and Chipcom which are the property of their respective
owners.

    NOTICE  TO NEW  HAMPSHIRE RESIDENTS:  Neither the  fact that  a registration
statement or an application for a license  has been filed with the State of  New
Hampshire  nor the fact that a security is effectively registered or a person is
licensed in the State of New Hampshire constitutes a finding by the Secretary of
State that any  documents filed  under RSA 421-B  of the  New Hampshire  Uniform
Securities  Act is true, complete and not  misleading. Neither any such fact nor
the fact  that an  exemption  or exception  is available  for  a security  or  a
transaction  means that the  Secretary of State  has passed in  any way upon the
merits or qualifications of,  or recommended or given  approval to, any  person,
security  or transaction. It  is unlawful to make,  or cause to  be made, to any
prospective purchaser, customer or  client any representation inconsistent  with
the provisions of this paragraph.

                                       3
<PAGE>
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
AVAILABLE INFORMATION......................................................................................          2
INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE............................................................          2
SUMMARY....................................................................................................          6
  The Companies............................................................................................          6
  Date and Place of the Chipcom Special Meeting............................................................          7
  Stockholders Entitled to Vote............................................................................          7
  Purpose of the Chipcom Special Meeting...................................................................          7
  Vote Required............................................................................................          7
  Effect of the Merger.....................................................................................          7
  Recommendation of the Chipcom Board of Directors.........................................................          8
  Opinion of Financial Advisor to Chipcom..................................................................          8
  Interests of Certain Persons in the Merger...............................................................          8
  Effective Time of the Merger.............................................................................          9
  Management of Chipcom After the Merger...................................................................          9
  Conditions to the Merger.................................................................................          9
  Termination..............................................................................................          9
  Surrender of Certificates................................................................................          9
  No Appraisal Rights......................................................................................         10
  Certain Federal Income Tax Consequences..................................................................         10
  Accounting Treatment.....................................................................................         10
  Comparison of Stockholder Rights.........................................................................         10
SELECTED HISTORICAL AND UNAUDITED PRO FORMA COMBINED FINANCIAL DATA........................................         11
COMPARATIVE PER SHARE DATA.................................................................................         15
MARKET PRICE INFORMATION...................................................................................         17
RISK FACTORS...............................................................................................         18
THE CHIPCOM SPECIAL MEETING................................................................................         23
  General..................................................................................................         23
  Matters To Be Considered at the Meeting..................................................................         23
  Voting at the Meeting; Record Date.......................................................................         23
  Proxies..................................................................................................         24
THE MERGER.................................................................................................         25
  Background of the Merger.................................................................................         25
  Reasons for the Merger; Recommendation of Chipcom Board of Directors.....................................         28
  Opinion of Financial Advisor to Chipcom..................................................................         31
  Interests of Certain Persons in the Merger...............................................................         34
  Accounting Treatment.....................................................................................         35
  Certain Federal Income Tax Consequences..................................................................         35
  Regulatory Approvals.....................................................................................         37
  Federal Securities Law Consequences......................................................................         37
  Nasdaq National Market Quotation.........................................................................         38
  No Appraisal Rights......................................................................................         38
  Certain Legal Proceedings................................................................................         38
THE MERGER AGREEMENT.......................................................................................         39
  The Merger...............................................................................................         39
  Conversion of Securities.................................................................................         39
  Representations and Warranties...........................................................................         40
  Certain Covenants and Agreements.........................................................................         40
</TABLE>

                                       4
<PAGE>
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
  No Solicitation..........................................................................................         41
<S>                                                                                                          <C>
  Related Matters After the Merger.........................................................................         42
  Indemnification..........................................................................................         42
  Conditions...............................................................................................         43
  Stock Option and Benefit Plans...........................................................................         43
  Termination; Termination Fees and Expenses...............................................................         44
  Amendment and Waiver.....................................................................................         45
INFORMATION CONCERNING 3COM................................................................................         46
  Business.................................................................................................         46
  Management's Discussion and Analysis of Financial Condition and Results of Operations....................         55
  Management...............................................................................................         60
  Security Ownership of Certain Beneficial Owners and Management...........................................         63
INFORMATION CONCERNING CHIPCOM.............................................................................         64
  Business.................................................................................................         64
  Security Ownership of Certain Beneficial Owners and Management...........................................         72
  Chipcom Stockholder Rights Plan..........................................................................         73
UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS..........................................................         74
COMPARISON OF STOCKHOLDER RIGHTS...........................................................................         80
DESCRIPTION OF 3COM CAPITAL STOCK..........................................................................         86
  Common Stock.............................................................................................         86
  Certain Charter Provisions...............................................................................         86
  Preferred Stock..........................................................................................         87
  3Com Shareholder Rights Plan.............................................................................         87
LEGAL MATTERS..............................................................................................         88
EXPERTS....................................................................................................         88
INDEX TO 3COM SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS...............................................        F-1
ANNEX A    AGREEMENT AND PLAN OF MERGER....................................................................        A-1
ANNEX B    OPINION OF WESSELS, ARNOLD & HENDERSON, L.L.C...................................................        B-1
</TABLE>

                                       5
<PAGE>
                                    SUMMARY

    THE  FOLLOWING IS  A SUMMARY OF  CERTAIN INFORMATION  CONTAINED ELSEWHERE IN
THIS PROXY STATEMENT/  PROSPECTUS. REFERENCE  IS MADE  TO, AND  THIS SUMMARY  IS
QUALIFIED  IN  ITS  ENTIRETY BY,  THE  MORE DETAILED  INFORMATION  CONTAINED, OR
INCORPORATED BY REFERENCE,  IN THIS PROXY  STATEMENT/PROSPECTUS AND THE  ANNEXES
HERETO.  UNLESS OTHERWISE DEFINED HEREIN, CAPITALIZED TERMS USED IN THIS SUMMARY
HAVE  THE  RESPECTIVE  MEANINGS  ASCRIBED  TO  THEM  ELSEWHERE  IN  THIS   PROXY
STATEMENT/PROSPECTUS.    STOCKHOLDERS   ARE    URGED   TO    READ   THIS   PROXY
STATEMENT/PROSPECTUS AND THE ANNEXES IN THEIR ENTIRETY.

    ALL SHARE AND PER SHARE DATA IN THIS PROXY STATEMENT/PROSPECTUS REFLECT  ALL
STOCK SPLITS OF 3COM COMMON STOCK AND CHIPCOM COMMON STOCK EFFECTED PRIOR TO THE
DATE HEREOF.

THE COMPANIES

    3COM.   3Com designs,  develops, manufactures, markets  and supports a broad
range of ISO  9000-compliant global data  networking connectivity solutions  for
building/campus  backbone, wide-area network ("WAN") backbone, workgroup, remote
office and personal office environments. 3Com offers virtually all the necessary
components to  build  and  manage these  networking  infrastructures,  including
routers,  hubs, remote access servers, switches, adapters and network management
for  Ethernet,   Token  Ring,   fiber  distributed   data  interface   ("FDDI"),
Asynchronous  Transfer Mode ("ATM") and other  high-speed data networks. As data
networks have grown in size and importance and have become the primary computing
environment  for   many  organizations,   customers  are   demanding   increased
performance,  scalability and  network access.  3Com's architecture  for scaling
performance and extending the reach of  customers' data networks is called  High
Performance  Scalable Networking ("HPSN"). HPSN  encompasses the full breadth of
3Com's products and provides a blueprint for planning, implementing and managing
customers' connectivity  systems  requirements.  With an  emphasis  on  industry
standards,  interoperability  and  investment  protection,  3Com  solutions  are
designed to reduce the overall cost of network ownership.

    3Com's products are marketed  worldwide through multiple indirect  channels,
such  as systems  integrators, value-added resellers,  distributors and original
equipment manufacturers ("OEMs"), as well as directly to certain customers. 3Com
maintains sales offices in  32 countries, service and  support centers on  three
continents  and manufacturing and  distribution centers in  the U.S. and Europe.
3Com sells its products to  a wide range of customers  in a variety of  markets,
including  financial services, education,  government, healthcare, manufacturing
and technology.

    3Com was incorporated in California  in June 1979. 3Com's executive  offices
are  located  at 5400  Bayfront Plaza,  Santa Clara,  California 95052,  and its
telephone number at that address is (408) 764-5000.

    CHIPCOM.  Chipcom designs, manufactures and distributes computer  networking
intelligent  switching systems,  including hubs and  internetworking and network
management products. Chipcom's products are designed to allow users to build and
manage  networks  with  dissimilar  personal  computers,  workstations,  cabling
systems  and communications  protocols within  an entire  building or  campus or
across remote  locations  of an  enterprise.  As entire  organizations  move  to
network (client/server) computing, features such as reliability, flexibility and
manageablility  are critical  to the  enterprise network.  Chipcom is  using its
technology and  product  strategy in  support  of the  evolution  to  enterprise
networks.

    The  ONline  System  Concentrator and  related  products,  Chipcom's initial
intelligent switching system, was  first introduced in  1990. The Online  System
product  family includes  numerous modules to  support Ethernet,  Token Ring and
FDDI communications protocols  being transmitted over  various types of  cabling
systems,  such as shielded or unshielded  twisted pair wiring, fiber-optic cable
and thick or thin coaxial cable.

    During 1994,  Chipcom  introduced  the ONcore  Switching  System,  Chipcom's
next-generation,  high-capacity,  highly  scalable,  intelligent  switching  hub
designed for high-end enterprise networks. The InfiNET Switching Solution,  also
introduced    in   1994,    is   a    family   of    packet-switching   products

                                       6
<PAGE>
which provide  increased network  capacity and  speed, or  network  "bandwidth."
During  the first quarter  of 1995, Chipcom  introduced the ONsemble StackSystem
family of  products. These  Ethernet  and Token  Ring hubs  and  internetworking
products  are designed  for remote sites  or workgroups and  provide a stackable
architecture scaled to the requirements of smaller installations.

    Chipcom  markets  and  sells   its  products  worldwide  primarily   through
third-party  distribution  channels, including  value-added resellers,  OEMs and
distributors.

    Chipcom was incorporated  in Delaware  in August  1983. Chipcom's  principal
executive  offices are located at 118 Turnpike Road, Southborough, Massachusetts
01772, and its telephone number at that address is (508) 460-8900.

DATE AND PLACE OF THE CHIPCOM SPECIAL MEETING

    The Chipcom Special Meeting will be  held on Thursday, October 12, 1995,  at
the offices of Hale and Dorr, 60 State Street, Boston, Massachusetts, commencing
at 9:00 a.m., local time.

STOCKHOLDERS ENTITLED TO VOTE

    Holders of record of shares of Chipcom Common Stock at the close of business
on  September 7,  1995, are  entitled to notice  of and  to vote  at the Chipcom
Special Meeting. At  such date there  were 17,106,898 shares  of Chipcom  Common
Stock  outstanding, each of which will be entitled to one vote on each matter to
be acted upon or which may properly come before the Chipcom Special Meeting.

PURPOSE OF THE CHIPCOM SPECIAL MEETING

    The purpose of the Chipcom Special Meeting is to consider and vote upon  (i)
a proposal to approve and adopt the Merger Agreement and (ii) such other matters
as  may  properly  be  brought  before  the  Chipcom  Special  Meeting,  or  any
postponements or adjournments thereof.

VOTE REQUIRED

    The approval and adoption  of the Merger  Agreement by Chipcom  stockholders
will  require  the  affirmative  vote  of  the  holders  of  a  majority  of the
outstanding shares of Chipcom Common Stock.

EFFECT OF THE MERGER

    Upon consummation  of the  Merger,  pursuant to  the Merger  Agreement,  (i)
Chipcom  Acquisition  Corporation,  a Delaware  corporation  and  a wholly-owned
subsidiary of 3Com ("Sub"), will be merged with and into Chipcom, which will  be
the  surviving corporation, and Chipcom will become a wholly-owned subsidiary of
3Com, and (ii) each issued and outstanding share of Chipcom Common Stock will be
converted into the right to  receive (a) 1.06 shares  of 3Com Common Stock  (the
"Conversion  Number" or "Exchange Ratio") and  (b) the related 3Com Common Stock
Purchase Rights.  See "Description  of 3Com  Capital Stock  -- 3Com  Shareholder
Rights  Plan." Fractional shares  of 3Com Common  Stock will not  be issuable in
connection with  the  Merger.  Chipcom  stockholders  otherwise  entitled  to  a
fractional  share will be paid the value  of such fraction in cash determined as
described herein under "The Merger Agreement -- The Merger."

    Upon consummation of  the Merger, each  then-outstanding option to  purchase
Chipcom  Common  Stock  (a  "Chipcom  Option")  will  be  assumed  by  3Com  and
automatically converted into an option (a "3Com Option") to purchase the  number
of  shares of 3Com Common Stock (rounded  down to the nearest whole number) that
the holder of such Chipcom Option  would have been entitled to receive  pursuant
to the Merger had such holder exercised such option in full immediately prior to
the  consummation of the Merger, at a price per share (rounded up to the nearest
whole cent) equal  to the  aggregate exercise price  for the  shares of  Chipcom
Common  Stock otherwise purchasable  pursuant to such  Chipcom Option divided by
the number of whole shares of 3Com Common Stock purchasable pursuant to the 3Com
Option which replaces such  Chipcom Option. See "The  Merger Agreement --  Stock
Option and Benefit Plans."

                                       7
<PAGE>
    Based  upon the capitalization of Chipcom and  3Com as of July 31, 1995, the
stockholders of Chipcom immediately prior to consummation of the Merger will own
approximately 11.1% of the outstanding  shares of 3Com Common Stock  immediately
following consummation of the Merger.

RECOMMENDATION OF THE CHIPCOM BOARD OF DIRECTORS

    The  Board  of  Directors of  Chipcom  has unanimously  approved  the Merger
Agreement and recommends that holders of Chipcom Common Stock approve and  adopt
the Merger Agreement. See "The Merger -- Reasons for the Merger; Recommendations
of the Chipcom Board of Directors."

OPINION OF FINANCIAL ADVISOR TO CHIPCOM

    Wessels,   Arnold  &  Henderson,  L.L.C.  ("Wessels,  Arnold  &  Henderson")
delivered its oral  opinion to the  Board of  Directors of Chipcom  on July  26,
1995,  confirmed in writing by a written opinion of the same date, to the effect
that the terms  of the Merger  are fair from  a financial point  of view to  the
holders  of  Chipcom Common  Stock.  The full  text  of the  written  opinion of
Wessels, Arnold & Henderson,  which sets forth the  assumptions made, the  scope
and limitations of the review undertaken and the procedures followed by Wessels,
Arnold  & Henderson, is attached hereto as Annex B and is incorporated herein by
reference. HOLDERS OF CHIPCOM COMMON STOCK  ARE URGED TO, AND SHOULD, READ  SUCH
OPINION  IN ITS  ENTIRETY. See  "The Merger --  Opinion of  Financial Advisor to
Chipcom."

INTERESTS OF CERTAIN PERSONS IN THE MERGER

    As of July  31, 1995,  directors and executive  officers of  3Com and  their
affiliates  may be deemed to  be beneficial owners of  approximately 3.0% of the
outstanding shares of  3Com Common  Stock. See "Information  Concerning 3Com  --
Security Ownership of Certain Beneficial Owners and Management."

    As  of July 31, 1995, directors and  executive officers of Chipcom and their
affiliates may be deemed  to be beneficial owners  of approximately 3.0% of  the
outstanding  shares of Chipcom Common Stock. See "Information Concerning Chipcom
-- Security Ownership of Certain Beneficial Owners and Management."

    Certain stock option  agreements previously  entered into  with Menachem  E.
Abraham,  Robert P. Badavas, Bruce L. Cohen,  J. Robert Held, John C. Meyer, Roy
J. Moffa and Ellen R. Kokos, who  are officers of Chipcom, provide that  certain
unvested  options granted to such officers  shall accelerate upon the closing of
the Merger.  Assuming  the Merger  is  consummated  on October  13,  1995,  such
officers  would hold unvested options to  acquire an aggregate of 507,511 shares
of Chipcom  Common Stock  (the "Officer  Options"), the  vesting of  which  will
accelerate  by  12 months.  After giving  effect  to this  acceleration, Officer
Options to purchase 226,815 shares of Chipcom Common Stock held by such officers
will then be exercisable, with exercise prices ranging from $12.75 to $41.50 per
share.

    Richard M.  Burnes, Jr.,  Jerald G.  Fishman, Frank  A. Onians,  William  H.
Sitter  and Victoria  A. Brown,  members of  Chipcom's Board  of Directors, hold
options to  purchase an  aggregate of  132,500 shares  of Chipcom  Common  Stock
granted  under Chipcom's 1991 Director Stock  Option Plan, as amended. Under the
terms of said  plan, all such  outstanding options shall  become exercisable  in
full  upon the consummation of the Merger. Assuming the Merger is consummated on
October 13, 1995, these provisions will result in the accelerated vesting of  an
aggregate  of 77,000 shares of  Chipcom Common Stock subject  to options held by
such directors, with exercise prices ranging from $8.34 to $32.75 per share.

    The Board of Directors of Chipcom adopted an Amended and Restated  Severance
Benefit  Plan (the "Chipcom Severance Plan"),  effective as of October 15, 1992.
The Chipcom Severance Plan provides that  each executive officer of Chipcom  and
certain  other management level employees  (individually, a "Participant") shall
be entitled  to compensation  and  certain benefits  upon  the occurrence  of  a
"Triggering Event." Under the Chipcom Severance Plan, a "Triggering Event" means
(i)  termination  of a  Participant's employment  within  18 months  following a
"change in control"  of Chipcom (as  defined in the  Chipcom Severance Plan)  by
Chipcom,  unless  such termination  is for  "cause" (as  defined in  the Chipcom
Severance   Plan),   or   by   the    Participant   for   "good   reason"    (as

                                       8
<PAGE>
defined  in  the Chipcom  Severance  Plan), or  (ii)  death or  disability  of a
Participant. The Merger will  constitute a "change in  control" for purposes  of
the  Chipcom Severance Plan. Upon the occurrence of a Triggering Event within 18
months following the consummation of the Merger, a Participant shall be entitled
to receive an amount equal  to up to one  year's compensation. In addition,  the
exercise  dates of  all stock  options and restricted  stock awards  held by the
Participant will be accelerated in full  and such Participant shall be  entitled
to  continue to receive for a period of up  to one year any benefits to which he
or she was entitled prior to termination. The amount, timing and duration of any
payment or benefit received  by a Participant under  the Chipcom Severance  Plan
following  termination varies  according to  whether he  or she  is an executive
officer or a management level employee and the type of Triggering Event.

EFFECTIVE TIME OF THE MERGER

    It is  anticipated that  the Merger  will become  effective as  promptly  as
practicable  after the requisite  approval of the  Chipcom stockholders has been
obtained and all other  conditions to the Merger  have been satisfied or  waived
(the "Effective Time"). It is anticipated that, assuming all conditions are met,
the Merger will occur on October 13, 1995.

MANAGEMENT OF CHIPCOM AFTER THE MERGER

    After  the Effective  Time, it  is expected that  a majority  of the current
management of Chipcom will continue as members of management of 3Com or  Chipcom
and that Chipcom will operate as a wholly-owned subsidiary of 3Com.

CONDITIONS TO THE MERGER

    The  obligations of 3Com and Chipcom to consummate the Merger are subject to
the satisfaction of certain conditions, including, but not limited to, obtaining
requisite stockholder and  regulatory approvals, approval  for quotation on  the
Nasdaq  National Market of  the 3Com Common  Stock to be  issued pursuant to the
Merger, the absence of  any injunction prohibiting  consummation of the  Merger,
the continuing accuracy of the representations and warranties made in the Merger
Agreement on and as of the Effective Time, the receipt of certain legal opinions
with  respect  to  tax  matters  and the  receipt  and  confirmation  of certain
accountants' letters with respect to qualification of the Merger as a pooling of
interests transaction. See "The Merger -- Accounting Treatment," "The Merger  --
Certain   Federal  Income  Tax  Consequences"   and  "The  Merger  Agreement  --
Conditions."

    The consummation of  the Merger  is subject to  certain regulatory  matters,
including  expiration of the relevant waiting period under the Hart-Scott-Rodino
Antitrust Improvements Act of  1976, as amended (the  "HSR Act"). On August  11,
1995,  3Com and Chipcom each  filed a notification and  report form. The waiting
period under the  HSR Act  expired on  September 10,  1995. See  "The Merger  --
Regulatory Approvals."

TERMINATION

    The  Merger Agreement is subject to termination by mutual written consent of
3Com and Chipcom and at  the option of either 3Com  or Chipcom if the Merger  is
not  consummated before December 31, 1995.  The Merger Agreement is also subject
to termination  upon  the occurrence  of  certain other  events.  Under  certain
circumstances,  Chipcom may be required to reimburse 3Com for its expenses up to
$1,000,000 and  to pay  3Com a  termination  fee of  $23,000,000 if  the  Merger
Agreement  is terminated. See "The  Merger Agreement -- Termination; Termination
Fees and Expenses."

SURRENDER OF CERTIFICATES

    If the Merger becomes effective, 3Com will mail a letter of transmittal with
instructions to all holders of record of Chipcom Common Stock immediately  prior
to  the Merger for use in surrendering  their stock certificates in exchange for
certificates representing shares of 3Com Common Stock and a cash payment in lieu
of fractional shares, if any. CERTIFICATES  SHOULD NOT BE SURRENDERED UNTIL  THE
LETTER  OF TRANSMITTAL IS  RECEIVED. See "The Merger  Agreement -- Conversion of
Securities."

                                       9
<PAGE>
NO APPRAISAL RIGHTS

    Holders of Chipcom Common  Stock are not  entitled to dissenters'  appraisal
rights  under the  Delaware General Corporation  Law (the  "DGCL") in connection
with the  Merger  because the  Chipcom  Common Stock  is  quoted on  the  Nasdaq
National Market and the shares of 3Com Common Stock to be issued pursuant to the
Merger  will be quoted on  the Nasdaq National Market  as of the Effective Time.
See "The Merger -- No Appraisal Rights."

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

    The Merger is intended to  be a tax-free reorganization  so that no gain  or
loss  would  be recognized  by 3Com  or Chipcom  and  no gain  or loss  would be
recognized by Chipcom stockholders, except in  respect of cash received in  lieu
of  fractional shares.  It is a  condition to  the Merger that  3Com and Chipcom
shall have each received  an opinion of their  respective counsel to the  effect
that  the Merger will constitute a  reorganization within the meaning of Section
368(a) of the  Internal Revenue Code  of 1986,  as amended (the  "Code"). For  a
further  discussion of federal  income tax consequences of  the Merger, see "The
Merger --  Certain  Federal  Income  Tax Consequences."  See  also  "The  Merger
Agreement -- Conditions."

ACCOUNTING TREATMENT

    The  Merger is intended to qualify as  a pooling of interests for accounting
and financial reporting purposes. It is a condition to the Merger that 3Com  and
Chipcom  shall  have  received letters  from  Deloitte  & Touche  LLP  and Price
Waterhouse LLP, their  respective independent  accountants, to  the effect  that
they  know of nothing with respect to  3Com or Chipcom, respectively, that would
prohibit the business combination to be  effected by the Merger from  qualifying
as  a  pooling  of  interests transaction  under  generally  accepted accounting
principles. See "The Merger --  Accounting Treatment" and "The Merger  Agreement
-- Conditions."

COMPARISON OF STOCKHOLDER RIGHTS

    See  "Comparison  of  Stockholder  Rights" for  a  summary  of  the material
differences between  the rights  of holders  of 3Com  Common Stock  and  Chipcom
Common Stock.

                                       10
<PAGE>
      SELECTED HISTORICAL AND UNAUDITED PRO FORMA COMBINED FINANCIAL DATA

    The selected supplemental historical consolidated financial data of 3Com and
the selected historical consolidated financial data of Chipcom have been derived
from  their respective audited historical  and supplemental historical financial
statements and should be read in conjunction with such financial statements  and
notes  thereto, which are either included or incorporated by reference elsewhere
in this  Proxy Statement/Prospectus.  3Com's supplemental  consolidated  balance
sheet and statements of operations for the periods presented include the balance
sheet  and  statements of  operations  of Primary  Access  Corporation ("Primary
Access"), with which 3Com consummated a business combination accounted for on  a
pooling  of interests basis as  of June 9, 1995,  and also reflect a two-for-one
split of 3Com Common Stock issued on  August 25, 1995 to shareholders of  record
as  of August  4, 1995. The  Chipcom selected  historical consolidated unaudited
financial data as of July 1, 1995 and for the six months ended July 1, 1995 have
been prepared on the  same basis as the  historical financial data derived  from
its  audited financial  statements and,  in the  opinion of  Chipcom management,
contain all adjustments, consisting only of normal recurring accruals, necessary
for the  fair  presentation of  the  results  of operations  for  such  periods.
Chipcom's  operating  results for  the six  months  ended July  1, 1995  are not
necessarily indicative of the results that may be expected for the entire fiscal
year ending December 30, 1995.

    The selected unaudited pro forma combined financial data give effect to  the
proposed  Merger  on  a pooling  of  interests  basis. The  unaudited  pro forma
combined financial data is based  on the respective historical and  supplemental
historical financial statements and the notes thereto, which are either included
or  incorporated by reference elsewhere  in this Proxy Statement/Prospectus. The
unaudited pro forma combined balance sheet assumes that the Merger took place on
May 31, 1995 and combines 3Com's May 31, 1995 supplemental consolidated  balance
sheet  with Chipcom's  July 1,  1995 unaudited  consolidated balance  sheet. The
unaudited pro forma  combined statements  of operations assume  that the  Merger
took  place as  of the  beginning of  the periods  presented and  combine 3Com's
supplemental consolidated statements  of operations for  the fiscal years  ended
May  31, 1995, 1994 and 1993 with Chipcom's results of operations for the twelve
months ended  July 1,  1995,  and for  the years  ended  December 25,  1993  and
December  26, 1992, respectively. This presentation  has the effect of excluding
Chipcom's results of  operations for the  six-month period ended  June 25,  1994
from the pro forma combined statement of operations data.

    The   unaudited  pro  forma   combined  financial  data   is  presented  for
illustrative purposes only  and is  not necessarily indicative  of the  combined
financial  position or  results of operations  of future periods  of the results
that actually would  have been realized  had the entities  been a single  entity
during these periods. The unaudited pro forma combined financial data is derived
from  the unaudited pro forma  combined financial statements appearing elsewhere
herein and  should  be read  in  conjunction  with those  statements  and  notes
thereto. See "Unaudited Pro Forma Combined Financial Statements."

                                       11
<PAGE>
                                      3COM
          SELECTED SUPPLEMENTAL HISTORICAL CONSOLIDATED FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                    FISCAL YEAR ENDED MAY 31,
                                                -----------------------------------------------------------------
                                                    1995          1994         1993         1992         1991
                                                -------------  -----------  -----------  -----------  -----------
<S>                                             <C>            <C>          <C>          <C>          <C>
SUPPLEMENTAL HISTORICAL CONSOLIDATED STATEMENT
 OF OPERATIONS DATA:
  Sales.......................................  $   1,325,693  $   851,047  $   630,966  $   429,597  $   413,498
  Operating income (loss).....................        196,517        3,422       60,213        4,701      (46,058)
  Net income (loss) (1).......................        125,999      (24,216)      39,677        4,591      (27,739)
  Net income (loss) per common and equivalent
   share (1)..................................           0.83        (0.19)        0.30         0.04        (0.23)
  Common and equivalent shares used in
   computing per share amounts................        152,698      129,620      132,872      123,312      121,936
SUPPLEMENTAL HISTORICAL CONSOLIDATED BALANCE
 SHEET DATA (END OF PERIOD):
  Working capital.............................  $     451,411  $   206,313  $   199,866  $   144,053  $   150,280
  Total assets................................        857,806      457,240      374,863      301,047      276,660
  Long-term obligations.......................        111,094        1,229        1,367        8,225        8,261
  Shareholders' equity........................        474,788      289,429      262,445      202,253      194,360
<FN>
------------------------
(1)  Net income for fiscal 1995 included a charge of approximately $60.8 million
     ($.24  per share) for purchased  in-process technology primarily associated
     with the acquisition  of NiceCom,  Ltd. ("NiceCom")  and a  charge of  $6.1
     million  ($.04 per share) for merger costs associated with the acquisitions
     of Sonix Communications Limited ("Sonix") and Primary Access.
</TABLE>

    Net loss for fiscal 1994 included  a charge of approximately $134.5  million
    ($.93  per share) for purchased  in-process technology resulting from 3Com's
    acquisitions   of    Synernetics,   Inc.    ("Synernetics")   and    Centrum
    Communications,  Inc.  ("Centrum")  and  an  exclusive  technology licensing
    agreement with Pacific Monolithics, Inc. ("Pacific Monolithics"), a gain  of
    approximately  $17.7 million  ($.08 per  share) relating  to the  sale of an
    investment and a tax benefit of $1.2 million ($.01 per share) resulting from
    retroactive tax law changes.

    Net income  for  fiscal 1993  included  non-recurring items  totalling  $1.3
    million  ($.01 per share)  which consisted of  the net cost  of a litigation
    settlement of $3.6  million, merger  costs of  $1.0 million  related to  the
    acquisition of Star-Tek, Inc. ("Star-Tek"), offset by a reduction in accrued
    restructuring  costs of  $3.3 million based  on revised  estimates of future
    costs.

    Net income for fiscal 1992 included a charge of approximately $10.4  million
    ($.07  per share) for purchased  in-process technology resulting from 3Com's
    acquisition of the  data networking  products business of  BICC Group,  plc.
    ("BICC").

    Net  loss for fiscal  1991 included a restructuring  charge of $67.0 million
    ($.36 per share) related to 3Com's exit from the workgroup systems business,
    the sale  of the  Maxess SNA  connectivity product  line, the  amendment  of
    3Com's  license  agreement with  Microsoft Corporation  ("Microsoft") making
    Microsoft solely responsible for the standard LAN Manager network  operating
    system, and a reduction in 3Com's workforce by approximately 12 percent.

                                       12
<PAGE>
                                    CHIPCOM
                SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                            SIX MONTHS ENDED                          FISCAL YEAR ENDED
                                        ------------------------  ---------------------------------------------------------
                                          JULY 1,     JUNE 25,     DEC. 31,     DEC. 25,    DEC. 26,   DEC. 28,   DEC. 29,
                                           1995         1994         1994         1993        1992       1991       1990
                                        -----------  -----------  -----------  -----------  ---------  ---------  ---------
<S>                                     <C>          <C>          <C>          <C>          <C>        <C>        <C>
HISTORICAL CONSOLIDATED STATEMENT OF
 OPERATIONS DATA:
  Sales...............................  $   157,721  $   113,188  $   267,776  $   160,486  $  92,265  $  52,819  $  34,004
  Operating income (loss).............       13,529       12,170       27,939       20,075      9,697      3,437       (644)
  Income (loss) before cumulative
   effect of change in accounting
   principle..........................        9,218        8,005       18,560       12,346      5,369      1,189     (1,016)
  Net income (loss)...................        9,218        8,005       18,560       14,549      5,369      1,189     (1,016)
  Income (loss) per share before
   cumulative effect of change in
   accounting principle...............         0.52         0.47         1.07         0.78       0.38       0.10      (0.11)
  Net income (loss) per common and
   equivalent share...................         0.52         0.47         1.07         0.92       0.38       0.10      (0.11)
  Common and equivalent shares used in
   computing per share amounts........       17,725       17,145       17,341       15,791     14,178     11,556      8,948
HISTORICAL CONSOLIDATED BALANCE SHEET
 DATA (END OF PERIOD):
  Working capital.....................  $   124,539               $   119,280  $   100,704  $  42,699  $  41,022  $   8,853
  Total assets........................      236,130                   221,853      157,928     82,215     58,121     20,004
  Long-term debt......................           29                       284        1,058      3,466      4,995      3,959
  Stockholders' equity................      172,663                   158,936      124,693     58,659     42,644      9,085
</TABLE>

------------------------
    As  a  result  of  the  merger  between  Chipcom  and  Artel  Communications
    Corporation ("Artel") effective February 14, 1994, the above financial  data
    for  all  periods reflects  the combined  results of  operations of  the two
    companies.

    On August 31, 1994, Chipcom acquired DSI ExpressNetworks, Inc. ("DSI").  The
    results  of  operations  of  DSI  are  included  in  Chipcom's  consolidated
    financial data since August 31, 1994.

    Net income and per share data for  the year ended December 31, 1994  include
    merger  and  acquisition  related  expenses  incurred  in  conjunction  with
    Chipcom's merger  with Artel  and Chipcom's  acquisition of  DSI.  Excluding
    these  one-time charges, net income and net income per share would have been
    $26.8 million and $1.54, repectively.

    All per share data  reflects a three-for-two  stock split effected  November
    14, 1994 in the form of a dividend.

    Net  income and  net income  per share data  for 1993  include the favorable
    effect of  the  required  adoption  of  Statement  of  Financial  Accounting
    Standards  No. 109, "Accounting  for Income Taxes."  This adoption increased
    net income and net income per share by approximately $2.2 million and  $.14,
    respectively.

                                       13
<PAGE>
                                  3COM AND CHIPCOM
                     SELECTED PRO FORMA COMBINED FINANCIAL DATA
                       (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                    (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                 FISCAL YEAR ENDED MAY 31,
                                                                         -----------------------------------------
                                                                             1995           1994          1993
                                                                         -------------  -------------  -----------
<S>                                                                      <C>            <C>            <C>
PRO FORMA COMBINED STATEMENT OF OPERATIONS DATA:
  Sales................................................................  $   1,638,002  $   1,011,533  $   723,231
  Operating income.....................................................        225,815         23,497       69,910
  Net income (loss)....................................................        143,772        (11,870)      45,046
  Net income (loss) per common and equivalent share (1)................           0.84          (0.08)        0.30
  Common and equivalent shares used in computing per share amounts.....        171,387        145,139      147,901

PRO FORMA COMBINED BALANCE SHEET DATA (END OF PERIOD):
  Working capital......................................................  $     540,050
  Total assets.........................................................      1,068,117
  Long-term obligations................................................        116,472
  Shareholders' equity.................................................        605,551
  Book value per share (2).............................................           3.76
<FN>
------------------------
(1)  The pro forma combined net income (loss) per common and equivalent share is
     based  upon the  weighted average  number of  common and  equivalent shares
     outstanding  (except  where  inclusion  of  common  equivalent  shares   is
     antidilutive)  of 3Com and Chipcom for each period at the Exchange Ratio of
     1.06 of shares of 3Com Common Stock for each share of Chipcom Common Stock.

(2)  Book value per share is computed by dividing pro forma shareholders' equity
     by the pro forma number of shares of Common Stock outstanding at the end of
     the period at the Exchange  Ratio of 1.06 shares  of 3Com Common Stock  for
     each share of Chipcom Common Stock.
</TABLE>

                                       14
<PAGE>
                           COMPARATIVE PER SHARE DATA
                                  (UNAUDITED)

    The   following  table  sets  forth   certain  historical  and  supplemental
historical per  share data  of 3Com  and  Chipcom and  unaudited pro  forma  and
equivalent pro forma combined per share data after giving effect to the proposed
Merger  on a pooling of interests basis at  the Exchange Ratio of 1.06 shares of
3Com Common Stock for each  share of Chipcom Common  Stock. This data should  be
read  in conjunction  with the  selected historical  and supplemental historical
financial data, the unaudited  pro forma combined  financial statements and  the
separate   historical   and  supplemental   historical   consolidated  financial
statements of 3Com and Chipcom and the notes thereto incorporated in or included
elsewhere in this Proxy Statement/Prospectus.  The unaudited pro forma  combined
financial  data  are  not necessarily  indicative  of the  operating  results or
financial position that would have been achieved had the Merger been consummated
at the  beginning  of the  periods  presented and  should  not be  construed  as
representative  of future operations. Neither Chipcom nor 3Com has ever declared
or paid cash dividends on their respective shares of capital stock.
<TABLE>
<CAPTION>
                                                                                               FISCAL YEAR ENDED
                                                                                      -----------------------------------
                                                                                        MAY 31,     MAY 31,     MAY 31,
                                                                                         1995        1994        1993
                                                                                      -----------  ---------  -----------
<S>                                                                <C>                <C>          <C>        <C>
Supplemental historical -- 3Com:
  Net income (loss) per share....................................                      $    0.83   $   (0.19)  $    0.30
  Book value per share (1).......................................                           3.32        2.15        2.06

<CAPTION>

                                                                                               FISCAL YEAR ENDED
                                                                                      -----------------------------------
                                                                   SIX MONTHS ENDED    DEC. 31,    DEC. 25,    DEC. 26,
                                                                     JULY 1, 1995        1994        1993        1992
                                                                   -----------------  -----------  ---------  -----------
<S>                                                                <C>                <C>          <C>        <C>
Historical -- Chipcom:
  Income per share before cumulative effect of change in
   accounting principle (2)......................................      $    0.52       $    1.07   $    0.78   $    0.38
  Book value per share (1).......................................          10.11            9.47        7.86        4.27
<CAPTION>

                                                                                               FISCAL YEAR ENDED
                                                                                      -----------------------------------
                                                                                         1995        1994        1993
                                                                                      -----------  ---------  -----------
<S>                                                                <C>                <C>          <C>        <C>
Pro forma and equivalent pro forma combined net income (loss) per
 share before cumulative effect of change in accounting principle
 (3)(4):
  Pro forma combined net income (loss) per 3Com share............                      $    0.84   $   (0.08)  $    0.30
  Equivalent pro forma combined net income (loss) per Chipcom
   share (5).....................................................                           0.89       (0.08)       0.32
<CAPTION>

                                                                                        MAY 31,
                                                                                         1995
                                                                                      -----------
<S>                                                                <C>                <C>          <C>        <C>
Pro forma combined book value per share (3)(4)(6):
  Pro forma combined book value per 3Com share...................                      $    3.76
  Equivalent pro forma combined book value per Chipcom share
   (5)...........................................................                           3.99
<FN>
------------------------
(1)  The historical and supplemental historical book value per share is computed
     by dividing shareholders' equity  by the number of  shares of Common  Stock
     outstanding at the end of each period.

(2)  Chipcom  adopted  Statement  of  Financial  Accounting  Standards  No.  109
     effective at the beginning of fiscal 1993.

(3)  The  unaudited  pro  forma  combined  net  income  (loss)  per  common  and
     equivalent  share data is based upon  the weighted average number of common
     and equivalent shares of 3Com and
</TABLE>

                                       15
<PAGE>

<TABLE>
<S>  <C>
     Chipcom for each period at the Exchange Ratio of 1.06 shares of 3Com Common
     Stock for each share of Chipcom Common Stock. Net income (loss) of 3Com for
     the fiscal year ended May  31, 1995, 1994 and  1993 has been combined  with
     the  net income of Chipcom for the twelve months ended July 1, 1995 and for
     the  fiscal  years  ended  December   25,  1993  and  December  26,   1992,
     respectively.  The  presentation  has  the  effect  of  excluding Chipcom's
     results of operations for  the six-months period ended  June 24, 1994  from
     the  pro  forma and  equivalent pro  forma combined  net income  (loss) per
     share. The pro forma and equivalent pro forma combined book value per share
     data reflect 3Com's per  share data as  of May 31,  1995 and Chipcom's  per
     share data as of July 1, 1995.

(4)  3Com  and  Chipcom estimate  they will  incur  direct transaction  costs of
     approximately $10 million  associated with the  Merger, consisting of  fees
     for  investment banking,  legal, accounting,  financial printing  and other
     related charges.
</TABLE>

    In addition, it is  expected that as  a result of  the Merger, the  combined
    company  will incur restructuring  expenses estimated to  be between $40 and
    $50 million. For the purposes of the preparation of the unaudited pro  forma
    combined  financial statements, an  estimate of $55 million  is used for the
    sum of  transaction  costs  and restructuring  expenses.  The  restructuring
    expenses are expected to include:

        -  write-off   of  assets  including   capitalized  software,  purchased
           technology, inventory  and  fixed assets  associated  with  duplicate
           product lines;

        -  elimination   of   duplicate  management   information   systems  and
           facilities, including cancellation of leases; and

        -  severance and outplacement costs.

   The income tax  effect of these  expenses has  also been reflected  as a  pro
   forma  adjustment. These nonrecurring costs will  be charged to operations in
   the fiscal quarter  in which  the Merger  is consummated.  The unaudited  pro
   forma  combined balance sheet  gives effect to  such expenses as  if they had
   been incurred as of  May 31, 1995,  but the effects of  these costs have  not
   been reflected in the unaudited pro forma combined statements of operations.

(5)  The unaudited pro  forma combined net income  (loss) per equivalent Chipcom
    share amounts and the unaudited pro forma book value per equivalent  Chipcom
    share  amounts are  calculated by  multiplying the  respective unaudited pro
    forma combined per 3Com share amounts  by the Exchange Ratio of 1.06  shares
    of 3Com Common Stock for each share of Chipcom Common Stock.

(6)  The  unaudited pro  forma  combined book  value  per share  is  computed by
    dividing unaudited pro forma combined shareholders' equity by the  unaudited
    pro  forma number of shares  of Common Stock outstanding  at the end of each
    period.

                                       16
<PAGE>
                            MARKET PRICE INFORMATION

    The following  table  sets forth  the  range of  high  and low  sale  prices
reported  on the  Nasdaq National  Market for 3Com  Common Stock  for the fiscal
periods indicated (share prices have been adjusted to reflect two-for-one  stock
splits, effective August 25, 1995 and September 1, 1994):

<TABLE>
<CAPTION>
                                                                                   3COM
                                                                               COMMON STOCK
                                                                           --------------------
                                                                             HIGH        LOW
                                                                           ---------  ---------
<S>                                                                        <C>        <C>
Fiscal Year Ended May 31, 1994:
  First Quarter..........................................................  $    7.31  $    4.91
  Second Quarter.........................................................       9.25       6.03
  Third Quarter..........................................................      15.81       8.84
  Fourth Quarter.........................................................      15.94      11.61
Fiscal Year Ended May 31, 1995:
  First Quarter..........................................................  $   17.28  $   10.06
  Second Quarter.........................................................      23.00      15.75
  Third Quarter..........................................................      26.63      20.06
  Fourth Quarter.........................................................      34.63      25.69
Fiscal Year Ending May 31, 1996:
  First Quarter..........................................................  $   40.81  $   30.44
  Second Quarter (through September 7, 1995).............................      41.13      38.38
</TABLE>

    The  following  table sets  forth  the range  of  high and  low  sale prices
reported on the Nasdaq National Market  for Chipcom Common Stock for the  fiscal
periods  indicated (share prices  have been adjusted  to reflect a three-for-two
stock split effective November 14, 1994):

<TABLE>
<CAPTION>
                                                                                 CHIPCOM
                                                                               COMMON STOCK
                                                                           --------------------
                                                                             HIGH        LOW
                                                                           ---------  ---------
<S>                                                                        <C>        <C>
Fiscal Year Ended December 25, 1993:
  First Quarter..........................................................  $   23.00  $   17.00
  Second Quarter.........................................................      29.00      19.17
  Third Quarter..........................................................      37.00      26.33
  Fourth Quarter.........................................................      36.33      28.92
Fiscal Year Ended December 31, 1994:
  First Quarter..........................................................  $   39.75  $   31.50
  Second Quarter.........................................................      36.75      20.75
  Third Quarter..........................................................      39.38      23.38
  Fourth Quarter.........................................................      50.50      31.88
Fiscal Year Ending December 30, 1995:
  First Quarter..........................................................  $   47.25  $   37.75
  Second Quarter.........................................................      35.50      20.13
  Third Quarter (through September 7, 1995)..............................      43.88      21.50
</TABLE>

    The following table sets forth the  closing prices per share of 3Com  Common
Stock  and Chipcom Common Stock on the  Nasdaq National Market on July 26, 1995,
the last full trading  date prior to  the execution and  delivery of the  Merger
Agreement  and the public  announcement thereof, and on  September 7, the latest
practicable trading day before the printing of this Proxy  Statement/Prospectus;
and  the equivalent per share prices for  Chipcom Common Stock based on the 3Com
Common Stock prices multiplied by the Exchange Ratio of 1.06:

<TABLE>
<CAPTION>
                                                     3COM COMMON    CHIPCOM COMMON    CHIPCOM
                                                        STOCK           STOCK       EQUIVALENT
                                                    --------------  --------------  -----------
<S>                                                 <C>             <C>             <C>
July 26, 1995.....................................    $   37.82       $   29.75      $   40.08
September 7, 1995.................................        39.50           41.38          41.87
</TABLE>

    Because the market price of 3Com Common Stock is subject to fluctuation, the
market value of the shares of 3Com  Common Stock that holders of Chipcom  Common
Stock  will receive in the Merger may  increase or decrease prior to the Merger.
CHIPCOM STOCKHOLDERS  ARE URGED  TO OBTAIN  A CURRENT  MARKET QUOTATION  OF  THE
CHIPCOM COMMON STOCK AND THE 3COM COMMON STOCK.

                                       17
<PAGE>
                                  RISK FACTORS

    THE FOLLOWING RISK FACTORS SHOULD BE CONSIDERED BY HOLDERS OF CHIPCOM COMMON
STOCK  IN EVALUATING WHETHER TO APPROVE  THE MERGER AGREEMENT AND THEREBY BECOME
HOLDERS OF 3COM COMMON STOCK. THESE FACTORS SHOULD BE CONSIDERED IN  CONJUNCTION
WITH  THE OTHER INFORMATION INCLUDED AND INCORPORATED BY REFERENCE IN THIS PROXY
STATEMENT/PROSPECTUS.

RISKS RELATING TO THE MERGER

    INTEGRATION OF CHIPCOM OPERATIONS.  The managements of 3Com and Chipcom have
entered into the  Merger Agreement  with the  expectation that  the Merger  will
result  in  beneficial synergies.  See "The  Merger --  Reasons for  the Merger;
Recommendation  of  Chipcom  Board  of  Directors."  Achieving  the  anticipated
benefits  of the Merger will depend in  part upon whether the integration of the
two companies' businesses is accomplished in an efficient and effective  manner,
and  there can be no assurance that  this will occur. The successful combination
of companies in the high technology industry may be more difficult to accomplish
than in other  industries. The combination  of the two  companies will  require,
among  other things, integration of  the companies' respective product offerings
and coordination  of their  sales  and marketing  and research  and  development
efforts.  There can be  no assurance that such  integration will be accomplished
smoothly or successfully. The difficulties of such integration may be  increased
by  the necessity  of coordinating  geographically separated  organizations. The
integration  of  certain  operations  following  the  Merger  will  require  the
dedication of management resources which may temporarily distract attention from
the  day-to-day business of the combined company. The inability of management to
successfully integrate the operations of the two companies could have a material
adverse effect on the business and  results of operations of 3Com. In  addition,
as  commonly occurs with mergers of  technology companies, during the pre-merger
and integration phases, aggressive competitors may undertake formal  initiatives
to attract customers and to recruit key employees through various incentives.

    RESELLERS  AND  CUSTOMERS.   There can  be no  assurance that  resellers and
present and potential customers of 3Com and Chipcom will continue their  current
buying  patterns without regard to the announced Merger. In particular, 3Com and
Chipcom believe that certain  customers may defer  purchasing decisions as  they
evaluate 3Com's future product strategy and consider aggressive pricing programs
of  certain competitors  of Chipcom  and 3Com. Any  such deferrals  could have a
material adverse effect upon  the results of operations  of 3Com and/or  Chipcom
both in the near term and the long term.

    RELATIONSHIP WITH IBM.  Sales to International Business Machines Corporation
("IBM"),  Chipcom's  principal  customer  and a  reseller  of  Chipcom products,
accounted for 38.2% of Chipcom's revenues in 1994 and 29.9% of Chipcom  revenues
in  the first six months of 1995. Sales  to IBM declined to $16.6 million in the
second quarter of 1995  from $30.6 million  in the first  quarter of 1995.  This
decrease  in sales to IBM resulted primarily  from an inventory imbalance at IBM
and a decrease in sales  of Chipcom products by  IBM to its customers.  Revenues
derived  from sales to IBM during the  third quarter of fiscal 1995 may decrease
from the second  quarter level,  and there  can be  no assurance  that sales  of
Chipcom  products to IBM will not decrease further in future periods, whether or
not the Merger is consummated. IBM purchases products from Chipcom pursuant to a
complex series of agreements entered into  between Chipcom and IBM in  September
1992  (the  "Alliance  Agreements").  IBM  and Chipcom  each  has  the  right to
terminate the Alliance Agreements for its convenience on short notice. 3Com  and
IBM  have entered into a Memorandum of Understanding pursuant to which they have
agreed to work together to continue and extend the existing relationship between
Chipcom and IBM. Implementation of the Memorandum of Understanding will  require
the negotiation of new agreements between 3Com and IBM covering the sale of 3Com
products  to IBM and the sale of IBM  products to 3Com, as well as the amendment
of the existing Alliance Agreements. Subject to 3Com and IBM reaching definitive
agreement on the terms of the sale  of certain products to each other, 3Com  and
IBM  have agreed not to terminate the  Alliance Agreements for convenience for a
period of 18  months from the  Effective Time.  The success of  the Merger  will
depend in substantial part on the

                                       18
<PAGE>
continuation  and improvement of the IBM/Chipcom relationship and the successful
development of a broader business relationship  between 3Com and IBM. There  can
be  no assurance that 3Com will be successful in this regard. See "The Merger --
Background of the  Merger" and  "Information Concerning Chipcom  -- Business  --
Relationship with IBM."

    TRANSACTION  AND RESTRUCTURING  CHARGES.  3Com  expects to  incur charges to
operations currently estimated to be between $50 million and $60 million in  the
quarter  in which  the Merger is  consummated, to reflect  costs associated with
combining the  operations  of the  two  companies, transaction  fees  and  costs
incident  to  the  Merger.  This  estimate  includes  direct  transaction  costs
associated with the Merger estimated to be approximately $10 million, consisting
of fees for investment banking, legal, accounting, financial printing and  other
related  charges,  and restructuring  expenses to  be  incurred by  the combined
company estimated to be between $40 and $50 million, which expenses will include
the write-off of  assets including capitalized  software, purchased  technology,
inventory  and fixed assets associated with duplicate product lines, elimination
of  duplicate   management  information   systems  and   facilities,   including
cancellation  of leases, and severance and outplacement costs. These amounts are
preliminary estimates and therefore subject to change. Additional  unanticipated
expenses  may  be incurred  relating  to the  integration  of the  businesses of
Chipcom and 3Com, including  the integration of  product lines and  distribution
and  administrative  functions. Although  3Com expects  that the  elimination of
duplicative expenses as well as other efficiencies related to the integration of
the businesses  may  offset additional  expenses  over  time, there  can  be  no
assurance  that such net benefit  will be achieved in the  near term, or at all.
See "Selected Historical and Unaudited Pro Forma Combined Financial Data."

RISKS RELATING TO 3COM AND THE COMBINED COMPANY

    ACQUISITION STRATEGY.    Acquisitions  of complementary  businesses  are  an
active  part of  3Com's overall business  strategy. In addition  to the proposed
Chipcom acquisition, 3Com has recently consummated acquisitions of several other
businesses, including Primary  Access, Sonix,  AccessWorks Communications,  Inc.
("AccessWorks")  and NiceCom.  3Com continually  evaluates potential acquisition
and  investment  opportunities.  There  can  be  no  assurance  that   products,
technologies   and  businesses   of  acquired  companies   will  be  effectively
assimilated into 3Com's  business or  product offerings. In  addition, 3Com  may
incur  significant  expenses to  complete  acquisitions and  investments  and to
support the  acquired products,  technologies  or businesses.  There can  be  no
assurance that any acquired products, technologies or businesses will contribute
to 3Com's revenues or earnings to any material extent. Further, the challenge of
managing the integration of several companies simultaneously is significant, and
there  can be no  assurance that 3Com  will be able  to successfully manage such
integration.

    NEW PRODUCTS  AND TECHNOLOGICAL  CHANGE.   The  market for  3Com's  products
(including  the  product lines  of  Chipcom to  be  acquired in  the  Merger) is
characterized by rapid technological developments, evolving industry  standards,
changes  in  customer  requirements,  frequent  new  product  introductions  and
enhancements  and  short  product  life   cycles.  3Com's  success  depends   in
substantial  part upon  its ability,  on a  cost-effective and  timely basis, to
continue to  enhance its  existing products  and to  develop and  introduce  new
products  that take advantage of technological advances. An unexpected change in
one or more of  the technologies affecting data  networking or in market  demand
for  products based  on a  particular technology  could have  a material adverse
effect on 3Com's  operating results.  For instance,  a large  portion of  3Com's
revenues  is comprised of sales of products based on Ethernet technology. 3Com's
operating results could be adversely affected if there were to be an  unexpected
change  in demand  for products  based on  such technology  or if  3Com does not
respond timely and effectively to expected changes. 3Com is engaged in  research
and  development activities in  certain emerging local-area  network ("LAN") and
WAN high-speed  technologies, such  as  100 Mbps  Ethernet, ATM  and  Integrated
Services   Digital   Network  ("ISDN").   There   can  be   no   assurance  that

                                       19
<PAGE>
3Com will be able to timely and successfully develop new products to address new
industry transmission standards and technological  changes or to respond to  new
product  announcements  by others  or that  any such  new products  will achieve
market  acceptance.   See  "Information   Concerning  3Com   --  Business"   and
"Information Concerning Chipcom -- Business."

    COMPETITION.   Both 3Com and  Chipcom experience significant competition and
expect  substantial  additional  competition   from  established  and   emerging
computer,  communications,  intelligent  network wiring  and  network management
companies. The primary competitors  for 3Com's products  are Bay Networks,  Inc.
("Bay   Networks"),  Cabletron   Systems,  Inc.   ("Cabletron"),  Cisco  Systems
("Cisco"), Intel  Corporation ("Intel")  and Standard  Microsystems  Corporation
("Standard  Microsystems"), while the primary competitors for Chipcom's products
are Bay  Networks,  Cabletron,  Digital Equipment  Corporation  ("Digital")  and
Ungermann-Bass,  Inc. ("Ungermann-Bass").  There can  be no  assurance that 3Com
will be able to compete successfully in the future with existing competitors  or
new   competitors.  The   data  networking  industry   has  become  increasingly
competitive and 3Com's results  of operations may be  adversely affected by  the
actions  of  existing  or  future  competitors.  Such  actions  may  include the
development  or  acquisition  of  new  technologies,  the  introduction  of  new
products,  marketing and sales activities directed at 3Com and Chipcom customers
while the 3Com and Chipcom product lines and sales forces are being  integrated,
the  assertion  by  third parties  of  patent or  similar  intellectual property
rights, and the  reduction of  prices by competitors  to gain  or retain  market
share.  Industry  consolidation or  alliances  may also  affect  the competitive
environment.  In  particular,  competitive   pressures  from  existing  or   new
competitors  who offer  lower prices or  introduce new products  could result in
delayed or  deferred  purchasing  decisions by  potential  customers  and  price
reductions,  both of  which would  adversely affect  3Com's sales  and operating
margins. The industry  in which  3Com and  Chipcom compete  is characterized  by
declining average selling prices. This trend could adversely impact 3Com's sales
and  operating margins.  3Com pioneered its  global data  networking strategy by
participating  in  designing,  manufacturing  and  marketing  products  for  all
segments  of  the  market  for  on-premises  equipment.  Until  recently, 3Com's
competitors typically competed  in one or  a limited number  of segments of  the
on-premises  sector of  the data  networking market.  These companies  are using
their resources  and technical  expertise to  improve and  expand their  product
lines  in an effort  to gain market  share. Several are  extending their product
offerings beyond a single  market segment and  pursuing strategies more  closely
resembling  3Com's global data networking  strategy. See "Information Concerning
3Com -- Business -- Competition."

    PRODUCT PROTECTION AND INTELLECTUAL PROPERTY.  3Com currently relies upon  a
combination  of  patents,  copyrights,  trademarks  and  trade  secret  laws  to
establish and protect its proprietary rights in its products. 3Com maintains  as
proprietary  the software and  other portions of  the technology incorporated in
its products. 3Com has been issued and  has applied for numerous patents in  the
United  States on various  aspects of its hardware  and software products. There
can be no  assurance that the  steps taken  by 3Com to  protect its  proprietary
rights  will be adequate  to prevent misappropriation of  its technology or that
3Com's  competitors  will  not  independently  develop  technologies  that   are
substantially equivalent or superior to 3Com's technology. In addition, the laws
of  some foreign countries do not protect  3Com's proprietary rights to the same
extent as do the laws of the United  States. No assurance can be given that  any
patents  currently held or issued to 3Com  in the future will not be challenged,
invalidated or circumvented or that  the rights granted thereunder will  provide
competitive advantages.

    From  time to time 3Com receives communications from third parties asserting
that 3Com's use of trademarks, or that 3Com's products, infringe or may infringe
the rights of third parties. There can be no assurance that any such claims will
not result  in protracted  and costly  litigation; however,  based upon  general
practice  in  the industry  3Com believes  that such  matters can  ordinarily be
resolved  without  any  material  impact  on  its  results  of  operations.  See
"Information  Concerning 3Com -- Business -- Markets and Customers," "-- Product
Development" and "-- Patents, Licenses and Related Matters."

                                       20
<PAGE>
    VOLATILITY OF STOCK PRICE.  Based on the trading history of its stock,  3Com
believes  factors  such  as  announcements  of  new  products  by  3Com  or  its
competitors, sales  of stock  into  the market  by existing  holders,  quarterly
fluctuations  in 3Com's  financial results  and general  conditions in  the data
networking market have  caused and are  likely to continue  to cause the  market
price  of  the  3Com  Common  Stock  to  fluctuate  substantially.  In addition,
technology company stocks have experienced extreme price and volume fluctuations
that often have been unrelated to  the operating performance of such  companies.
This  market volatility may  adversely affect the market  price of 3Com's Common
Stock. See "Market Price Information." Because  the market price of 3Com  Common
Stock  is subject to fluctuation, the market  value of the shares of 3Com Common
Stock that the Chipcom shareholders will  receive in the Merger may increase  or
decrease prior to the Merger. Chipcom shareholders are urged to obtain a current
market quotation for 3Com Common Stock.

    SMALL  BACKLOG  AND  POTENTIAL  FLUCTUATIONS  IN  QUARTERLY  RESULTS.   3Com
customers place orders on an as  needed basis and 3Com typically ships  products
within  one to four weeks after receipt  of an order. Accordingly, 3Com does not
maintain a substantial backlog, and most of its revenues in each quarter  result
from  orders booked  in that  quarter. 3Com  establishes its  expenditure levels
based on its  expectations as  to future revenues,  and if  revenue levels  were
below expectations this could cause expenses to be disproportionately high. As a
result,  a drop in near  term demand will significantly  affect sales, causing a
disproportionate reduction  in profits  in any  quarter. In  the future,  3Com's
operating  results may fluctuate for  this reason or as a  result of a number of
other factors, including increased competition, variations in the mix of  sales,
announcements  of new products  by 3Com or its  competitors and capital spending
patterns of 3Com's customers.

    DEPENDENCE UPON  SUPPLIERS.   Some  key components  of 3Com's  products  are
currently  available only from  single sources. The inability  of 3Com to obtain
certain components could require 3Com to redesign or delay shipments of  several
of   its  data  networking   products.  3Com  has   sought  to  establish  close
relationships with sole-source suppliers  and/or to build  up inventory of  such
components;  however,  there can  be no  assurance that  production will  not be
interrupted due  to the  unavailability of  components. 3Com  believes that  its
inventory  levels of these components, combined with finished components held by
3Com's suppliers, are adequate for its presently forecasted needs. Although 3Com
has contractual arrangements  with certain of  its sole-source suppliers,  there
can be no assurance that in the future 3Com's suppliers will be able to meet the
demand  for components in  a timely and  cost-effective manner. 3Com's operating
results and  customer relationships  could be  adversely affected  by either  an
increase  in prices for, or  an interruption or reduction  in supply of, any key
components. See "Information Concerning 3Com -- Business."

    CERTAIN  CHARTER  PROVISIONS.     Certain  charter  provisions  and   3Com's
shareholder  rights  plan  could  have  the  effect  of  delaying,  deferring or
preventing a change in control of  3Com. In addition, 3Com's charter  eliminates
the  personal monetary liability  of its directors  for breach of  their duty of
care, and  3Com has  entered into  agreements with  its officers  and  directors
indemnifying  them against losses they may  incur in legal proceedings resulting
from their service to 3Com. See "Description of 3Com Capital Stock."

    ACTS OF  GOD.   3Com's corporate  headquarters and  a large  portion of  its
research  and development activities and  other critical business operations are
located near  major earthquake  faults. Operating  results could  be  materially
adversely affected in the event of a major earthquake.

    ATTRACTION  AND  RETENTION  OF  KEY EMPLOYEES.    Competition  for qualified
personnel in the computer and  communications industries is intense. The  future
success  of the combined companies  will depend in large  part on its ability to
attract and retain key employees. See "Information Concerning 3Com -- Business."

RISKS RELATING TO CHIPCOM

    DEPENDENCE ON IBM.   In  September 1992,  Chipcom entered  into a  worldwide
marketing and development alliance with IBM embodied in the Alliance Agreements.
Sales to IBM accounted for

                                       21
<PAGE>
38.2% of Chipcom's revenues in 1994 and 29.9% of Chipcom's revenues in the first
six months of 1995. Sales to IBM declined to $16.6 million in the second quarter
of  1995 from $30.6 million in the first quarter of 1995. This decrease in sales
to IBM resulted primarily from an inventory  imbalance at IBM and a decrease  in
sales  of Chipcom products by IBM to  its customers. Revenues derived from sales
to IBM during  the third quarter  of fiscal  1995 may decrease  from the  second
quarter  level, and there can be no  assurance that sales of Chipcom products to
IBM will not decrease  further in future periods.  Further declines in sales  to
IBM would have a material adverse effect on Chipcom's results of operations. IBM
and  Chipcom  each  has  the  right to  terminate  the  Alliance  Agreements for
convenience on short notice. A termination of, or significant adverse change in,
the relationships between IBM and Chipcom  could have a material adverse  effect
on   Chipcom's  business.  In  addition,  IBM  may  elect  to  develop  products
competitive with Chipcom's products which  could have a material adverse  effect
on  Chipcom's  business.  See  "Information Concerning  Chipcom  --  Business --
Relationship with IBM."

    NEW PRODUCTS AND TECHNOLOGICAL CHANGE.  The market for Chipcom's products is
characterized by rapid technological developments, evolving industry  standards,
changes  in  customer  requirements,  frequent  new  product  introductions  and
enhancements and  short  product  life  cycles.  Chipcom's  success  depends  in
substantial  part upon its  ability to continue to  enhance, on a cost-effective
and timely  basis,  its existing  products  and  to develop  and  introduce  new
products  that  take advantage  of  technological advances.  Chipcom's operating
results could be adversely affected if there were to be an unexpected change  in
demand  for products  based on  a particular technology  or if  Chipcom does not
respond timely  and  effectively to  expected  changes. Chipcom  is  engaged  in
research  and development activities in certain  emerging LAN and WAN high-speed
technologies, such as 100 Mbps Ethernet, ATM and ISDN. There can be no assurance
that Chipcom will  be able to  timely and successfully  develop new products  to
address  new  industry transmission  standards and  technological changes  or to
respond to  new product  announcements  by others  or  that such  products  will
achieve  market  acceptance. Chipcom  has in  the past  occasionally experienced
delays in introducing certain  of its products. There  can be no assurance  that
Chipcom  will not  encounter technical  or other  difficulties that  could delay
introduction of  new products  in  the future  or,  if Chipcom  encounters  such
delays,  that  they  would  not  have a  material  adverse  effect  on Chipcom's
business. Chipcom relies on a combination of patent, trade secret, copyright and
trademark law, nondisclosure  agreements and technical  measures to protect  its
rights  pertaining to its products. Such protection may not preclude competitors
from developing products with features similar to Chipcom's products.

    COMPETITION.    Chipcom  experiences  significant  competition  and  expects
substantial  additional  competition  from  established  and  emerging computer,
communications, intelligent network wiring and network management companies. The
primary competitors for Chipcom's products are Bay Networks, Cabletron,  Digital
and  Ungermann-Bass. There  can be  no assurance  that Chipcom  will be  able to
compete successfully in the future with existing competitors or new competitors.
The data networking industry has  become increasingly competitive and  Chipcom's
results  of operations may be  adversely affected by the  actions of existing or
future competitors. Such actions may  include the development or acquisition  of
new  technologies,  the  introduction  of  new  products,  marketing  and  sales
activities directed at Chipcom customers  while Chipcom product lines and  sales
forces are being integrated, the assertion by third parties of patent or similar
intellectual property rights, and the reduction of prices by competitors to gain
or  retain market share.  In particular, competitive  pressures from existing or
new competitors who offer lower prices or introduce new products could result in
delayed or  deferred  purchasing  decisions by  potential  customers  and  price
reductions,  both of which could adversely  affect Chipcom's sales and operating
margins. The industry in  which Chipcom competes  is characterized by  declining
average  selling prices. This  trend could adversely  impact Chipcom's sales and
operating  margins.  Chipcom  participates   in  designing,  manufacturing   and
marketing  on-premises equipment. Chipcom's competitors typically compete in one
or more segments of the on-premises sector of the data networking market.  These
companies  are  using their  resources and  technical  expertise to  improve and
expand their product offerings beyond a single market segment. Many of Chipcom's
competitors are more  established, benefit from  greater market recognition  and

                                       22
<PAGE>
have  greater financial, technological, production  and marketing resources than
Chipcom. In addition, certain companies in the networking industry have expanded
their product lines or technologies in recent years as a result of acquisitions.
Although Chipcom believes that it has certain technological and other advantages
over  its  competitors,  maintaining  such  advantages  will  require  continued
investment by Chipcom in research and development and sales and marketing. There
can be no assurance that the Company will have sufficient resources to make such
investments  or that the Company will be able to make the technological advances
necessary to maintain such competitive advantages.

    POTENTIAL FLUCTUATIONS  IN QUARTERLY  RESULTS.   The majority  of  Chipcom's
revenues  in each  quarter result  from orders  booked in  that quarter. Chipcom
establishes its spending levels based on its expectations as to future revenues,
and if revenue  levels are below  expectations this could  cause expenses to  be
disproportionately  high.  As  a  result,  a  drop  in  near  term  demand  will
significantly affect sales, causing a  disproportionate reduction in profits  in
any  quarter. Chipcom's operating results may fluctuate  for this reason or as a
result  of  a  number  of   other  factors,  including  increased   competition,
announcements  of new products by Chipcom  or its competitors, acceptance of new
products in the market and capital spending patterns of Chipcom's customers.

    VOLATILITY OF  STOCK PRICE.   Based  on the  trading history  of its  stock,
including  declines in  Chipcom's stock  price in  the second  quarter of fiscal
1995, Chipcom  believes  factors such  as  quarterly fluctuations  in  Chipcom's
financial  results,  sales  of  stock  into  the  market  by  existing  holders,
announcements of  new  products  by  Chipcom  or  its  competitors  and  general
conditions  in the networking industry have caused and are likely to continue to
cause the market price  of Chipcom Common Stock  to fluctuate substantially.  In
addition,  technology company stocks  have experienced extreme  price and volume
fluctuations that often have been unrelated to the operating performance of such
companies. This  market volatility  may  adversely affect  the market  price  of
Chipcom's Common Stock. See "Market Price Information."

                          THE CHIPCOM SPECIAL MEETING

GENERAL

    This  Proxy Statement/Prospectus  is being  furnished to  holders of Chipcom
Common Stock in connection with the solicitation of proxies by the Chipcom Board
of Directors for  use at the  Chipcom Special  Meeting to be  held on  Thursday,
October  12, 1995  at the  offices of  Hale and  Dorr, 60  State Street, Boston,
Massachusetts, commencing at 9:00 a.m., local  time, and at any adjournments  or
postponements thereof.

    This Proxy Statement/Prospectus and the accompanying form of proxy are first
being mailed to stockholders of Chipcom on or about September 11, 1995.

MATTERS TO BE CONSIDERED AT THE MEETING

    At  the  Chipcom  Special  Meeting, holders  of  Chipcom  Common  Stock will
consider and vote upon a proposal to approve and adopt the Merger Agreement  and
such  other  matters  as may  properly  be  brought before  the  Chipcom Special
Meeting, or any postponements or adjournments thereof.

    The Board  of  Directors of  Chipcom  has unanimously  approved  the  Merger
Agreement  and  recommends  a  vote  FOR approval  and  adoption  of  the Merger
Agreement.

VOTING AT THE MEETING; RECORD DATE

    Holders of record  of shares of  Chipcom Common Stock  on September 7,  1995
will  be entitled to notice of and to vote at the Chipcom Special Meeting. As of
September  7,  1995  there  were  17,106,898  shares  of  Chipcom  Common  Stock
outstanding,  entitled to vote and held  by approximately 836 holders of record.
Each holder of record of  shares of Chipcom Common Stock  on the record date  is
entitled  to cast one vote per share on  each proposal submitted for the vote of
the Chipcom stockholders, either in person or by properly executed proxy, at the
Chipcom Special Meeting. The presence, in person or by properly executed  proxy,
of  the holders of a majority of  the outstanding shares of Chipcom Common Stock
entitled to vote  is necessary  to constitute a  quorum at  the Chipcom  Special
Meeting.

                                       23
<PAGE>
    The  approval and adoption  by Chipcom stockholders  of the Merger Agreement
will require  the  affirmative  vote  of  the  holders  of  a  majority  of  the
outstanding shares of Chipcom Common Stock.

    As  of July 31, 1995, directors and  executive officers of Chipcom and their
affiliates may be deemed  to be beneficial owners  of approximately 3.0% of  the
outstanding shares of Chipcom Common Stock.

    At  the  Chipcom Special  Meeting, in  determining  whether the  proposal to
approve and adopt  the Merger  Agreement has  received the  requisite number  of
affirmative votes, abstentions and broker non-votes will have the same effect as
a  vote against such  proposal. At the Chipcom  Special Meeting, abstentions and
broker non-votes will  be counted for  purposes of determining  the presence  or
absence  of a quorum. A  "broker non-vote" occurs when  a nominee holding shares
for a beneficial owner does not vote  on a proposal because, for such  proposal,
the nominee does not have discretionary voting
power and has not received instructions with respect to voting of such shares.

PROXIES

    This  Proxy Statement/Prospectus is being  furnished to Chipcom stockholders
in connection with the solicitation of proxies by and on behalf of the Board  of
Directors of Chipcom for use at the Chipcom Special Meeting.

    All  shares of Chipcom stock which are  entitled to vote and are represented
at the Chipcom Special Meeting by properly executed proxies received prior to or
at the Chipcom Special Meeting,  and not revoked, will  be voted at the  Chipcom
Special  Meeting in accordance with the  instructions indicated on such proxies.
If no instructions are  indicated, such proxies will  be voted FOR approval  and
adoption of the Merger Agreement.

    If  any other matters are properly  presented at the Chipcom Special Meeting
for consideration, including, among other  things, consideration of a motion  to
adjourn  the Chipcom  Special Meeting to  another time  and/or place (including,
without limitation,  for  the purpose  of  soliciting additional  proxies),  the
persons  named in  the enclosed  form of proxy  and acting  thereunder will have
discretion to vote on such matters in accordance with their best judgment.

    Any proxy given pursuant to this  solicitation may be revoked by the  person
giving  it at any time before it is  voted. Proxies may be revoked by (i) filing
with the Secretary of Chipcom at or before the taking of the vote at the Chipcom
Special Meeting, a written  notice of revocation bearing  a later date than  the
proxy,  (ii) duly executing a later dated  proxy relating to the same shares and
delivering it to the Secretary of Chipcom  before the taking of the vote at  the
Chipcom  Special  Meeting or  (iii) attending  the  Chipcom Special  Meeting and
voting in person (although attendance at the Chipcom Special Meeting will not in
and of  itself  constitute a  revocation  of a  proxy).  Any written  notice  of
revocation  or subsequent proxy should be sent  so as to be delivered to Chipcom
Corporation,  Southborough  Office  Park,   118  Turnpike  Road,   Southborough,
Massachusetts  01772, Attention:  Investor Relations,  or hand  delivered to the
Secretary of Chipcom, at or before the taking of the vote at the Chipcom Special
Meeting.

    All expenses  of this  solicitation,  including the  cost of  preparing  and
mailing  this Proxy Statement/ Prospectus, will be borne by 3Com and Chipcom. In
addition to  solicitation by  use of  the  mails, proxies  may be  solicited  by
directors, officers and employees of Chipcom in person or by telephone, telegram
or other means of communication. Such directors, officers and employees will not
receive   additional  compensation,   but  may  be   reimbursed  for  reasonable
out-of-pocket  expenses  in  connection  with  such  solicitation.  Chipcom  has
retained  MacKenzie Partners, Inc., a proxy solicitation firm, for assistance in
connection with solicitation of  proxies for the Chipcom  Special Meeting at  an
estimated expense of $5,000 plus reasonable out-of-pocket expenses. Arrangements
will  also be made  with custodians, nominees and  fiduciaries for forwarding of
proxy solicitation materials to  beneficial owners of shares  held of record  by
such  custodians,  nominees and  fiduciaries,  and Chipcom  will  reimburse such
custodians, nominees and fiduciaries reasonable expenses incurred in  connection
therewith.

    CHIPCOM STOCKHOLDERS SHOULD NOT SEND ANY STOCK CERTIFICATES WITH THEIR PROXY
CARDS.

                                       24
<PAGE>
                                   THE MERGER

BACKGROUND OF THE MERGER

    Acquisitions  of  complementary  businesses  are an  active  part  of 3Com's
overall business  strategy.  Over the  past  four years,  3Com  has  consummated
acquisitions   of  nine  other  businesses,  including  Primary  Access,  Sonix,
AccessWorks, NiceCom and Centrum. See "Information Concerning 3Com--  Business."
3Com  continually  evaluates potential  acquisition opportunities  and considers
potential  alliances,  combinations,  joint   development  programs  and   other
strategic transactions with other participants in the networking industry.

    Over  the past  several years,  Chipcom's management  has from  time to time
engaged in discussions with its Board of Directors and numerous companies in the
networking industry in an effort to explore the evolution in, and the future of,
the networking industry and of Chipcom's role in the industry. During the course
of such discussions, Chipcom has considered various alliances and  combinations,
including  product development,  distribution and  marketing alliances, business
combinations and related transactions.

    As a result of 3Com's acquisition  of Centrum in 1994, 3Com became  involved
in  an existing  relationship between  Centrum and  Chipcom under  which Chipcom
planned to acquire from Centrum,  on an OEM basis,  certain products for use  in
Chipcom's  OpenHub program.  After the  Centrum acquisition,  3Com continued the
development of Centrum's relationship  with Chipcom and, in  the course of  that
relationship,  the two companies from time  to time had various management level
discussions concerning the evolution of the networking industry and the  ongoing
relationship between the two companies.

    On  April  13, 1995,  Mr.  Held, President  and  Chief Executive  Officer of
Chipcom, and Eric  A. Benhamou, Chairman  and Chief Executive  Officer of  3Com,
discussed,  on a preliminary basis, the possibility  of a combination of the two
companies. Following  this  discussion,  the senior  management  teams  of  each
company began to explore internally the feasibility of such a strategic business
combination.

    On  April  28, 1995,  as  part of  a  regularly scheduled  Chipcom  Board of
Directors meeting, Chipcom's management made a presentation to the Chipcom Board
concerning Chipcom's long-term strategy and the strategic alternatives available
to Chipcom. Following  this meeting,  Mr. Held,  with the  authorization of  the
Chipcom  Board of Directors, discussed with  certain companies in the networking
industry, including 3Com, industry trends and potential strategic alliances with
Chipcom.

    On May 1,  1995, Mr. Benhamou,  Robert J. Finnochio,  Jr., 3Com's  Executive
Vice  President and General  Manager, Network Systems  Operations, and Janice M.
Roberts, 3Com's Vice President,  Marketing, met with Mr.  Held and Mr.  Abraham,
Chipcom's Senior Vice President and Chief Technical Officer, to learn more about
each other's primary product lines and product development programs.

    On   May  2,  1995,  3Com  and  Chipcom  executed  and  delivered  a  Mutual
Confidentiality Agreement.

    On May 15, 1995, Messrs. Benhamou and Held spoke by telephone and  discussed
3Com's  preliminary  interest in  proceeding  with more  substantive discussions
regarding a possible  combination and  agreed upon  the basis  under which  3Com
could conduct its preliminary due diligence review.

    On  May 4, 1995 and May  24, 1995, the Board of  Directors of Chipcom met by
telephone conference call to discuss Chipcom's long-term strategy and  strategic
relationships.  At each meeting, Mr. Held  reported on discussions with 3Com and
certain  other  companies  in  the  networking  industry  concerning   potential
strategic  alliances with Chipcom. At each meeting, the Chipcom Board authorized
and instructed management to  continue discussions with  these companies and  to
explore  a potential strategic  alliance. Following each  of these meetings, Mr.
Held continued preliminary discussions with certain companies in the  networking
industry concerning potential strategic alliances.

                                       25
<PAGE>
    On  May 24, 1995, Mr.  Held and Mr. Badavas,  Senior Vice President, Finance
and Chief Financial  Officer of Chipcom,  met with Ms.  Roberts and John  Boyle,
Vice  President,  Business Development  of  3Com, to  discuss  Chipcom's current
business strategy  and  business  prospects  and to  review  the  due  diligence
process.

    On  June 6,  1995, Messrs. Held  and Badavas  of Chipcom met  again with Ms.
Roberts and Mr. Boyle of 3Com to discuss the structure of a potential merger, as
well as the parties'  preliminary views with respect  to valuation. During  this
meeting,  the  3Com  representatives  delivered  a  discussion  outline  of  the
principal terms of a possible combination.

    On June 11, 1995,  3Com engaged Morgan Stanley  & Co. Incorporated  ("Morgan
Stanley")  as its  financial advisor  in connection  with a  potential strategic
combination with Chipcom.

    On June 11, 1995, Messrs. Held and Badavas of Chipcom spoke with Ms. Roberts
and Mr. Boyle of 3Com by telephone and discussed, among other things, a schedule
for completing 3Com's due diligence review  and reaching a conclusion as to  the
feasibility of the business combination.

    On  June  14, 1995,  another telephone  conference  was held  between senior
management representatives of Chipcom and  3Com to discuss, among other  things,
the principal terms of the proposed combination.

    On  June 16, 1995, at  a meeting of the  Chipcom Board, Chipcom's management
(i) reviewed Chipcom's  projected revenues  and operating profile  for the  last
three  quarters  of  fiscal  1995, (ii)  reviewed  Chipcom's  strategic planning
process for the next  few years, and  (iii) gave a  presentation to the  Chipcom
Board  with  respect to  transitions in  the  networking industry  and Chipcom's
competitive position  and  product strategy.  The  Chipcom Board  discussed  the
various strategic options available to Chipcom and Chipcom's long-term strategy.
Mr.  Held and other  members of management responded  to numerous questions from
the Chipcom Board.  The Chipcom Board  instructed the management  of Chipcom  to
continue  discussions with  3Com and certain  other companies  in the networking
industry regarding a potential strategic alliance.

    On June 23, 1995 and June 26, 1995, the Board of Directors of Chipcom met by
telephone conference call to discuss potential strategic alliances and discussed
the various strategic options available to Chipcom. At these meetings, Chipcom's
management reported on discussions with 3Com and certain other companies in  the
networking  industry concerning potential strategic alliances. The Chipcom Board
instructed the  management of  Chipcom  to continue  discussions with  3Com  and
certain  other  companies  in  the  networking  industry  regarding  a potential
strategic alliance.

    Following each of these meetings,  Mr. Held continued discussions with  3Com
and  certain  other companies  in the  networking industry  concerning potential
strategic alliances. Throughout June and until July 26, 1995, Chipcom management
and its legal and financial advisors discussed the terms of a possible  business
combination with another company in the networking industry. During this period,
(i)  that company conducted a  due diligence review of  Chipcom and held various
meetings with Chipcom concerning the business, operations and technology of each
company and of the combined company that would result from a possible  strategic
alliance  and  (ii)  representatives  of Chipcom  and  that  company  engaged in
negotiations of a proposed merger agreement.

    On June 29,  1995, the  Chipcom Board met  by telephone  conference call  to
discuss  potential strategic  alliances. Mr.  Held reported  on discussions with
companies in  the  networking  industry, including  3Com,  concerning  potential
strategic  alliances  including the  preliminary  terms of  a  proposed business
combination with the company referred to in the preceding paragraph. The Chipcom
Board discussed  the agreement  between Chipcom  and IBM  (the "IBM  Agreement")
pursuant  to which IBM had (i)  a right to notice of  a proposed sale of Chipcom
and (ii) 30  days in which  to decide whether  to indicate an  interest in  such
sale.  The Chipcom  Board authorized  and instructed  Chipcom management  to (a)
provide notice to IBM  in accordance with  the terms of the  IBM Agreement of  a
possible  business combination of Chipcom and a third party, (b) engage Wessels,
Arnold & Henderson to act as its financial advisor in connection with a possible
strategic alliance, including a possible

                                       26
<PAGE>
business combination involving Chipcom, and  (c) continue discussions with  3Com
and  certain other  companies in the  networking industry  regarding a potential
strategic alliance, including a possible business combination involving Chipcom.

    Following this  meeting,  Chipcom's  management  continued  discussions  and
engaged  in  due  diligence  reviews  of Chipcom  with  3Com  and  certain other
companies in  the  networking  industry,  including  IBM,  concerning  potential
strategic alliances, including a possible business combination with Chipcom.

    On  July 1, 1995, representatives of  Wessels, Arnold & Henderson and Morgan
Stanley reviewed the status of the merger discussions between 3Com and  Chipcom,
and  Wessels, Arnold  & Henderson advised  Morgan Stanley that  Chipcom had been
having preliminary  discussions with  another company,  whom Wessels,  Arnold  &
Henderson  did  not  identify, with  regard  to a  potential  strategic business
combination.

    On July 5, 1995, representatives of  3Com and Chipcom spoke again  regarding
the  terms of a potential business combination,  and 3Com delivered to Chipcom a
revised discussion outline of the principal terms of a possible transaction.  On
the  basis  of  the mutually  satisfactory  progress of  these  discussions, the
parties agreed that a series of  meetings would take place during the  following
week.

    On  July 6, 1995, the Chipcom Board  met by telephone conference call to (i)
review  management's  discussions  concerning  potential  strategic   alliances,
including  a possible business combination with 3Com and certain other companies
in the  networking industry  and (ii)  review Chipcom's  preliminary results  of
operations for the fiscal quarter ended July 1, 1995.

    On July 10, 1995, 3Com delivered a draft merger agreement to Chipcom and its
counsel.

    During  the week of July  10, 1995, representatives of  3Com and its counsel
met with representatives of Chipcom and its counsel to complete various  aspects
of 3Com's due diligence review.

    On  July 11, 1995 and July 13, 1995, representatives of 3Com and its counsel
met with representatives  of Chipcom  and its  counsel to  discuss the  proposed
structure of the merger and review the terms of the proposed merger agreement.

    On  July 11, 1995, July 17, 1995 and July 20, 1995, the Chipcom Board met by
telephone conference call to (i)  review management's discussions with 3Com  and
certain  other  companies  in  the  networking  industry  concerning  a possible
business combination  with  Chipcom  and  (ii)  discuss  strategic  alternatives
available to Chipcom.

    On July 13, 1995, at a regularly scheduled meeting of the Board of Directors
of  3Com, management  reported to  the 3Com  Board on  the status  of the merger
discussions, and  the  3Com  Board  discussed various  issues  relating  to  the
proposed business combination.

    On  July 22, 1995,  representatives of senior  management of 3Com, including
Messrs. Benhamou,  Finnochio  and Boyle  and  William G.  Marr,  Executive  Vice
President,  Worldwide Sales,  met with  representatives of  senior management of
Chipcom, including Messrs. Held, Badavas and Abraham, and Bruce L. Cohen, Senior
Vice President,  Field Operations,  to  discuss organizational  and  operational
issues relating to the potential business combination.

    On  July 24, 1995 and July 25, 1995, representatives of 3Com and its counsel
had various telephone conversations with IBM  and its counsel which resulted  in
the  execution of a  Memorandum of Understanding  in which IBM  and 3Com agreed,
among other things, assuming the consummation of the Merger, to work together to
continue and extend the existing relationship between Chipcom and IBM.

    On July  24,  1995,  the  3Com  Board  met  by  telephone  conference  call.
Management  reported on the status of the merger discussions, and the 3Com Board
authorized management to continue negotiations with Chipcom.

                                       27
<PAGE>
    On  July  25, 1995,  3Com  delivered to  Chipcom  and its  counsel  a merger
proposal, including 3Com's proposed Exchange  Ratio and other business terms  of
the Merger and a form of merger agreement, and asked for a response from Chipcom
by July 26, 1995.

    On  July 26, 1995, 3Com and Chipcom and their respective counsel had further
discussions regarding the terms of the merger agreement and related documents.

    On July 26, 1995, IBM notified  Chipcom that it would waive compliance  with
the  30 day notice period required under the IBM Agreement and that it would not
pursue the negotiation of  an acquisition of Chipcom.  The other company in  the
networking  industry with which Chipcom had  engaged in discussions concerning a
potential strategic alliance  also informed  Chipcom that it  would not  proceed
further with such discussions.

    On July 26, 1995, at a special meeting of the 3Com Board, (i) the management
of  3Com  made  presentations  to  the  3Com  Board  as  to  the  status  of the
discussions, the  results  of  the  due diligence  evaluation  of  Chipcom,  the
principal  terms of the proposed Merger and  the benefits and potential risks of
the business combination,  and (ii)  3Com's financial  advisor, Morgan  Stanley,
reviewed, among other things, the strategic rationale for, and certain financial
analyses  relating to, the proposed Merger.  The 3Com Board unanimously approved
the Merger Agreement and  related matters and  authorized management to  proceed
with the Merger.

    On  July  26, 1995,  at  a special  meeting of  the  Chipcom Board,  (i) the
management of Chipcom reported on the Exchange Ratio proposed by 3Com and  other
business terms of the proposed Merger, (ii) Chipcom's legal counsel reviewed the
proposed  terms  of the  Merger  Agreement, (iii)  Chipcom's  financial advisor,
Wessels, Arnold  &  Henderson,  provided  financial  analyses  relating  to  the
proposed  Merger and delivered its  oral opinion to the  effect that, as of such
date, the Exchange Ratio was fair from a financial point of view to the  Chipcom
stockholders, and (iv) the Chipcom Board approved the Merger Agreement. See "The
Merger -- Opinion of Financial Advisor to Chipcom."

    On  July  26, 1995,  following the  meetings of  their respective  Boards of
Directors, the parties executed the Merger Agreement.

    On July 27, 1995,  prior to the  opening of trading  on the Nasdaq  National
Market, 3Com and Chipcom issued a joint news release announcing the Merger.

REASONS FOR THE MERGER; RECOMMENDATION OF CHIPCOM BOARD OF DIRECTORS

  JOINT REASONS FOR THE MERGER

    3Com  and Chipcom have  identified several potential  benefits of the Merger
that they believe will contribute to the success of the combined company.  These
potential benefits include principally the following:

    - The  extensive  offerings of  3Com's workgroup  stackable hubs  and single
      function data center products, such as LANplex and CELLPlex, combined with
      Chipcom's multifunction ONcore and ONline data center hubs, will  position
      the  combined company to have one of the broadest hub product lines in the
      industry. Additionally, the combined expertise of the two companies in the
      emerging area of switching technology  is expected to enable the  combined
      company  to  offer state-of-the-art  switching technology  integrated into
      this broad product line.

    - The combined company should  benefit from synergistic development  efforts
      in  the area  of network management  products. As  switching technology is
      accepted by the  market, the  role of  network management  is expected  to
      evolve  and become  more central to  the use of  the network, specifically
      driving the development of "virtual LAN" management. 3Com and Chipcom each
      have teams  working  on  open,  standards-based  approaches  to  this  new
      development,  and the combination of  these resources should enhance these
      efforts.

                                       28
<PAGE>
    - The combination of  engineering staffs  is expected  to produce  synergies
      which  may improve and accelerate  product development. Further, by taking
      advantage of manufacturing synergies  and 3Com's manufacturing  expertise,
      the combined company may be able to reduce costs and increase the value of
      products delivered to its customers.

    - The  combined resources  of 3Com  and Chipcom  should permit  the combined
      company to leverage the  existing Chipcom/IBM strategic relationship.  IBM
      resells  certain of Chipcom's product lines including Chipcom's ONcore and
      ONline product  lines,  and  this relationship  may  be  more  effectively
      supported by the combined company, and may be extended to cover additional
      3Com  and IBM products, thereby potentially expanding the channels for and
      sales of 3Com and  Chipcom products. Further,  the technology sharing  and
      joint  development activities proposed in  the Memorandum of Understanding
      between 3Com  and IBM,  if implemented,  may create  additional value  for
      customers  by increasing the interoperability of IBM, 3Com and third party
      products.

    - The combination of the sales and marketing resources of the two  companies
      may  enable the combined company to  compete more effectively with greater
      resources. 3Com's two-tiered distribution channel and end-user channel and
      Chipcom's single-tier channel, integration partners and field organization
      will be complementary. The combined company is expected to have a  broader
      product  line,  higher  market profile,  and  greater  financial stability
      thereby making its products more attractive, particularly to resellers and
      large end-users.

    - The combined company is expected to achieve other operational efficiencies
      and synergies which could allow it to reduce costs.

  FURTHER 3COM BACKGROUND AND REASONS FOR THE MERGER

    The Board of Directors of 3Com unanimously approved the Merger Agreement  at
its  meeting held on July 26, 1995. The Board of Directors of 3Com believes that
consummation of the Merger is in the best interests of 3Com.

    In arriving at its unanimous decision  to approve the Merger Agreement,  the
Board  of Directors of  3Com considered a  number of factors.  Among the factors
that the  3Com  Board considered  were  (i) information  concerning  3Com's  and
Chipcom's  respective businesses,  historical financial  performance, operations
and products, including possible future  product releases, (ii) the  anticipated
leverage  between 3Com's and  Chipcom's hub products,  (iii) the opportunity for
3Com to distribute its products through different channels, (iv) the opportunity
to significantly expand 3Com's relationship with IBM by improving and leveraging
the existing Chipcom/IBM  strategic relationship,  (v) the  opportunity to  sell
3Com  products into Chipcom's installed base of major end-user accounts, (vi) an
analysis of  the relative  value that  Chipcom might  contribute to  the  future
business  and prospects of  the combined company  including pro forma historical
and projected  revenue  and  earnings  contribution,  (vii)  comparison  of  the
financial  terms of comparable  merger and acquisition  transactions, (viii) the
compatibility of management  and businesses  of 3Com and  Chipcom, (ix)  reports
from management and legal advisors on specific terms of the relevant agreements,
including the Merger Agreement, and other matters, (x) the Board's judgment that
3Com  was unlikely  to identify an  alternative business  opportunity that would
provide superior benefits to 3Com and  its shareholders in the hub market,  (xi)
3Com's and Chipcom's historical and projected financial condition and results of
operations  which, in the judgment of  the Board, supported the consideration to
be paid by 3Com in the Merger and (xii) the technical and marketing knowledge of
the Chipcom  employee  team, including  detailed  understanding of  product  and
application requirements, buying behavior and key competitors' offerings.

    One  of 3Com's goals has been to  expand its product offering and technology
in the hub  business, and to  continually expand its  distribution channels.  In
addition,  3Com has been  considering ways to expand  its relationship with IBM.
3Com's Board believes  that the  combination with  Chipcom will  assist 3Com  in
achieving these goals.

                                       29
<PAGE>
    The  3Com Board  also considered  negative factors  relating to  the Merger,
including (i) the  risks that the  benefits sought  in the Merger  would not  be
fully achieved, (ii) the risk that the Merger would not be consummated and (iii)
the  effect  of  the public  announcement  of  the Merger  on  3Com's  sales and
operating results. The 3Com Board believed  that these risks were outweighed  by
the potential benefits to be gained by the Merger.

  CHIPCOM'S REASONS FOR THE MERGER AND RECOMMENDATION OF THE CHIPCOM BOARD

    The  Board of Directors of Chipcom unanimously approved the Merger Agreement
at its meeting held on July 26, 1995. The Board of Directors of Chipcom believes
that consummation of  the Merger is  in the  best interests of  Chipcom and  its
stockholders  and unanimously recommends  that the stockholders  of Chipcom vote
FOR approval of the Merger Agreement.

    In arriving at its unanimous decision  to approve the Merger Agreement,  the
Board  of Directors of Chipcom considered a number of factors, including (i) the
ability of the combined company to provide Chipcom customers with a broader  set
of  network connectivity  solutions, (ii) the  potential for  increased sales of
Chipcom products  through  3Com's larger  sales  force and  geographically  more
expansive  distribution channel, (iii) the ability to reduce dependence on third
party technology in areas such as routing and remote access by accessing  3Com's
technology  base, (iv) the ability to  realize cost savings through the leverage
of research and development spending by 3Com in areas such as routing and remote
access, thus enabling  Chipcom to focus  its engineering resources  on its  core
technologies, (v) the ability to leverage 3Com's expertise in low cost of design
and  manufacturing efficiencies and (vi) the ability of the Chipcom stockholders
to share in the enhanced prospects of the combined company.

    The Chipcom Board also considered  negative factors relating to the  Merger,
including  (i) the  risks that the  benefits sought  in the Merger  would not be
fully achieved, (ii) the risk that the Merger would not be consummated and (iii)
the effect  of the  public announcement  of the  Merger on  Chipcom's sales  and
operating  results. The Chipcom Board believed  that these risks were outweighed
by the potential benefits to be gained by the Merger.

    In the course of its deliberations  during Board meetings held on April  28,
1995,  May 4, 1995, May 24,  1995, June 16, 1995, June  23, 1995, June 26, 1995,
June 29, 1995, July  6, 1995, July 11,  1995, July 17, 1995,  July 20, 1995  and
July 26, 1995, the Chipcom Board reviewed with management a number of additional
factors  relevant to the Merger, including  the long-term strategy and prospects
for Chipcom and other potential strategic relationships. The Chipcom Board  also
considered, among other matters, (i) the consideration to be received by Chipcom
stockholders in the Merger and the relationship between the market value of 3Com
Common Stock to be issued in exchange for each share of Chipcom Common Stock and
the market value of Chipcom Common Stock, (ii) information concerning 3Com's and
Chipcom's  respective business, prospects,  financial performance and condition,
operations, technology, management and competitive position, (iii) the financial
condition, results of  operations and business  of Chipcom and  3Com before  and
after  giving effect to the Merger  and (iv) current financial market conditions
and historical market prices, volatility and trading information with respect to
Chipcom Common  Stock and  3Com Common  Stock. In  addition, the  Chipcom  Board
reviewed  the  principal  terms  of  the  Merger  Agreement.  The  Chipcom Board
considered the  financial  analyses prepared  by  Wessels, Arnold  &  Henderson,
including  the oral opinion of Wessels, Arnold & Henderson delivered at the July
26, 1995 meeting of the Chipcom Board, to the effect that, as of such date,  the
Exchange  Ratio pursuant to the Merger Agreement was fair from a financial point
of view to the Chipcom stockholders.

    In view  of  the  wide  variety of  factors,  both  positive  and  negative,
considered by the Chipcom Board, the Chipcom Board did not find it practical to,
and  did  not, quantify  or otherwise  assign relative  weights to  the specific
factors considered.

                                       30
<PAGE>
OPINION OF FINANCIAL ADVISOR TO CHIPCOM

    Wessels, Arnold &  Henderson has acted  as financial advisor  to Chipcom  in
connection  with the Merger. Pursuant to an engagement letter dated July 1, 1995
(the "Engagement  Letter"),  Chipcom retained  Wessels,  Arnold &  Henderson  to
furnish  financial advisory  and investment banking  services with  respect to a
possible sale or merger of Chipcom and to render an opinion as to the  fairness,
from a financial point of view, to the Chipcom stockholders of the consideration
offered  in  any proposed  sale or  merger.  The amount  of consideration  to be
received  by  Chipcom  stockholders  in   the  Merger  was  determined   through
negotiations  between Chipcom management  and 3Com and not  by Wessels, Arnold &
Henderson, although Wessels, Arnold & Henderson did assist Chipcom management in
these negotiations.  Wessels,  Arnold  & Henderson  rendered  its  oral  opinion
(subsequently  confirmed in writing)  on July 26,  1995 to the  Chipcom Board of
Directors that, as of  such date and based  on the procedures followed,  factors
considered  and assumptions  made by  Wessels, Arnold  & Henderson  as set forth
therein, the consideration to be received by the holders of Chipcom Common Stock
pursuant to the Merger Agreement is fair  from a financial point of view to  the
holders of Chipcom Common Stock. A copy of Wessels, Arnold & Henderson's opinion
dated  July 26, 1995  (the "Wessels Opinion"), which  sets forth the assumptions
made, matters considered, the scope and limitations of the review undertaken and
the procedures followed by Wessels, Arnold & Henderson is attached as Annex B to
this Proxy  Statement/Prospectus. Chipcom  stockholders are  urged to  read  the
Wessels  Opinion in its entirety.  The summary of the  Wessels Opinion set forth
herein is qualified  in its entirety  by reference to  the Wessels Opinion.  The
Wessels Opinion applies only to the fairness of the consideration to be received
by the Chipcom stockholders as provided by the terms of the Merger Agreement and
should  not  be  deemed to  constitute  a  recommendation by  Wessels,  Arnold &
Henderson to Chipcom stockholders  to vote in favor  of any matter presented  in
this  Proxy  Statement/Prospectus.  Chipcom stockholders  should  note  that the
opinion expressed by Wessels, Arnold & Henderson was provided solely for the use
of the Chipcom Board of Directors in its evaluation of the Merger and was not on
behalf of, and was  not intended to  confer rights or  remedies upon, 3Com,  any
securityholder  of 3Com or Chipcom, or any  person other than Chipcom's Board of
Directors. The Chipcom Board did not impose any limitations on the scope of  the
investigation  of  Wessels, Arnold  & Henderson  with  respect to  rendering its
opinion.

    In connection with its review of the Merger, and in arriving at its opinion,
Wessels, Arnold & Henderson has: (i)  reviewed and analyzed the financial  terms
of  the Merger Agreement; (ii) reviewed  and analyzed certain publicly available
financial statements and other information  of Chipcom and 3Com; (iii)  reviewed
and  analyzed  certain internal  financial  statements and  other  financial and
operating data concerning Chipcom  prepared by the  management of Chipcom;  (iv)
reviewed  and analyzed certain internal financial statements and other financial
and operating  data concerning  3Com prepared  by the  management of  3Com;  (v)
reviewed  and analyzed certain financial  projections prepared by the management
of Chipcom; (vi) reviewed and analyzed certain financial projections prepared by
the management of 3Com; (vii) conducted  discussions with members of the  senior
management  of Chipcom  with respect to  the business and  prospects of Chipcom;
(viii) conducted discussions with members of the senior management of 3Com  with
respect  to the  business and  prospects of  3Com; (ix)  analyzed the  pro forma
impact of the Merger on 3Com's results of operations; (x) reviewed the  reported
prices  and trading activity  for the Chipcom  Common Stock and  the 3Com Common
Stock; (xi)  compared the  financial performance  of Chipcom  and 3Com  and  the
prices  of  the Chipcom  Common Stock  and the  3Com Common  Stock with  that of
certain other comparable publicly traded  companies and their securities;  (xii)
reviewed  the  financial terms,  to the  extent  publicly available,  of certain
comparable merger  transactions;  and  (xiii) participated  in  discussions  and
negotiations  among  representatives of  Chipcom and  3Com and  their respective
financial and legal advisors.

    Based on this information, Wessels,  Arnold & Henderson performed a  variety
of  analyses  and  examinations of  the  Merger and  considered  such financial,
economic and market criteria as it deemed necessary in arriving at its  opinion.
The  following  is a  summary of  the financial  analyses performed  by Wessels,
Arnold & Henderson in connection with the delivery of the Wessels Opinion.

                                       31
<PAGE>
    COMPARABLE COMPANY ANALYSIS.  Wessels, Arnold & Henderson used a  comparable
company  analysis to analyze Chipcom's operating performance relative to a group
of publicly  traded  companies which  Wessels,  Arnold &  Henderson  deemed  for
purposes of its analysis to be comparable to Chipcom. In such analysis, Wessels,
Arnold & Henderson compared the value to be achieved by the Chipcom stockholders
in  the Merger,  expressed as  a multiple of  certain operating  results, to the
market trading values achieved by the stockholders of the comparable  companies,
expressed  as  a  multiple of  the  same  operating results.  Wessels,  Arnold &
Henderson compared multiples of selected  financial data for Chipcom with  those
of  the  following publicly  traded companies  in  the networking  industry: Bay
Networks, Cabletron, Cisco, LanOptics, Ltd., Madge N.V., and 3Com  (collectively
referred  to  as  the  "Comparable  Companies").  Although  such  companies were
considered comparable  to Chipcom  for the  purpose of  this analysis  based  on
certain  characteristics of their respective  businesses, none of such companies
possessed characteristics  identical  to those  of  Chipcom. Wessels,  Arnold  &
Henderson  calculated the following valuation multiples based on, as to Chipcom,
a market price of $40.08  per share for the 3Com  Common Stock to be offered  as
consideration  in the  Merger, and,  as to  the Comparable  Companies, on market
prices and other information  available as of the  date of the Wessels  Opinion.
Multiples  of  future earnings  were based  on  projected earnings  as estimated
publicly by  recognized securities  analysts.  The mean  and median  for  market
capitalization as a multiple of each of the indicated statistics for Chipcom and
the  Comparable  Companies  is  as follows:  (i)  projected  calendar  year 1995
earnings per share,  38.2x for Chipcom,  as compared to  a mean of  24.5x and  a
median  of 25.3x for  the Comparable Companies and  (ii) projected calendar year
1996 earnings per share, 24.9x for Chipcom, as compared to a mean of 19.7x and a
median of 19.4x for the Comparable Companies. In each of the comparisons of  the
value  to be achieved by the Chipcom stockholders in the Merger as compared with
the mean and median  of the market  values realized by  the stockholders of  the
Comparable Companies, the multiples of operating results achieved by the Chipcom
stockholders  was  greater  than  that  realized  by  the  stockholders  of  the
Comparable Companies.

    COMPARABLE TRANSACTIONS.  Wessels, Arnold & Henderson compared multiples  of
selected financial data and other financial data relating to the proposed Merger
with  multiples paid  in, and other  financial data from,  17 acquisitions since
1988 of high-technology companies (i.e.,  companies in the markets for  computer
equipment, electronics, communications (including networking) and other advanced
technologies)  with aggregate equity values between $250 million and $2 billion.
These transactions were selected based  primarily on the aggregate equity  value
of the business acquired, the public company status of the target and the target
company's involvement in a high-technology industry. Wessels, Arnold & Henderson
also  compared the premium of  the equity value per  share over the target stock
price one day and four weeks prior to the announcement of the transaction.  This
analysis  produced multiples of equity value to latest 12-month revenues for the
comparable acquisitions ranging from 0.8x to 9.3x with a mean and median of 2.7x
and 1.8x, respectively, as compared to 2.3x for Chipcom. The multiple of  equity
value  to latest  12-month operating  income for  comparable acquisitions ranged
from 10.1x to 56.5x with a mean  and a median of 25.8x and 19.6x,  respectively,
as  compared  to  19.6x  for  Chipcom.  The  multiple  of  equity  value  of the
acquisition to latest  12-month net income  ranged from 16.8x  to 70.5x, with  a
mean  and median  of 35.8x  and 30.0x,  respectively, as  compared to  29.4x for
Chipcom. The premium of the equity value  per share over the stock price of  the
target  one day prior to the announcement  of the transaction ranged from 16% to
62% with a mean and  a median of 44% and  47%, respectively, as compared to  35%
for  Chipcom. The premium of the equity value  per share over the stock price of
the target four weeks prior to  the announcement of the transaction ranged  from
16%  to 86% with a mean and median  of 55% and 58%, respectively, as compared to
65% for Chipcom.

    PRO FORMA MERGER  ANALYSIS.  Wessels,  Arnold & Henderson  analyzed the  pro
forma  effect of the Merger on the combined income statement of Chipcom and 3Com
for 3Com's fiscal years 1995 and projected 1996 (ending May 31, 1995 and May 31,
1996, respectively). The analysis was based  on an assumed Conversion Number  of
0.53  (1.06 after giving  effect to the  two-for-one split of  3Com Common Stock
issued on August  25, 1995  to shareholders  of record  as of  August 4,  1995),
actual results of operations of Chipcom and 3Com through the quarters ended June
30, 1995 and May 31, 1995,

                                       32
<PAGE>
respectively,  and the projections of results  of operations of Chipcom and 3Com
for subsequent periods and related assumptions based on projections provided  by
the management of Chipcom and 3Com. The analysis disclosed that the Merger would
have  a slightly dilutive  effect on 3Com's  earnings per share  for the quarter
ending November 30, 1995 but would have a slightly accretive effect on  earnings
per share for quarters ending February 28, 1996 and May 31, 1996.

    DISCOUNTED  CASH  FLOW  ANALYSIS.   Wessels,  Arnold  &  Henderson estimated
present values  of  Chipcom using  a  discounted  cash flow  analysis  based  on
projections  of  future operations  prepared  by Chipcom's  management. Wessels,
Arnold & Henderson calculated present  values of projected operating cash  flows
after  net changes to working capital over  the period between July 26, 1995 and
December 31, 1995 and the three years 1996 to 1998 using discount rates  ranging
from  20% to  25%. Wessels, Arnold  & Henderson  calculated approximate terminal
values of Chipcom as of December 31,  1998 of 7.5x Chipcom's calendar year  1998
operating  income.  Wessels,  Arnold  & Henderson  determined  this  multiple by
analyzing the relationship between Chipcom's currently projected growth rate and
its operating income multiple as of July 26, 1995 based on Chipcom's most recent
trailing twelve  months  operating  income and  applying  this  relationship  to
Chipcom's  estimated  future growth  rate  as of  1998.  The terminal  value was
discounted to present  value using the  same discount rates  as the cash  flows.
Wessels, Arnold & Henderson calculated an implied valuation of Chipcom by adding
the present value of the cash flows and the terminal value. The implied value of
shares  of Chipcom  Common Stock  based on this  analysis ranged  from $29.91 to
$34.57 per share. Wessels,  Arnold & Henderson determined  that, at the time  of
the  Wessels  Opinion, the  value of  the  consideration to  be received  by the
Chipcom stockholders in the Merger of $40.08 per share based on the market price
of 3Com Common Stock was greater than the present value of Chipcom's cash  flows
under the range of discounted cash flow valuations discussed above.

    The  preparation  of a  fairness opinion  is  a complex  process and  is not
necessarily susceptible  to partial  analysis or  summary description.  Wessels,
Arnold  & Henderson believes that its analyses must be considered as a whole and
that selecting portions  of its analyses  and of the  factors considered by  it,
without  considering all  factors and  analyses, could  create an  incomplete or
misleading view of  the processes  underlying its  opinion. In  arriving at  its
fairness  determination, Wessels, Arnold  & Henderson considered  the results of
all such  analyses.  In  view of  the  wide  variety of  factors  considered  in
connection  with its  evaluation of  the fairness  of the  merger consideration,
Wessels, Arnold  & Henderson  did not  find it  practicable to  assign  relative
weights  to  the  factors considered  in  reaching  its opinion.  No  company or
transaction used in the above analysis  as a comparison is identical to  Chipcom
or  3Com or the proposed Merger. The  analyses were prepared solely for purposes
of Wessels, Arnold & Henderson providing its  opinion as to the fairness of  the
Merger  consideration pursuant  to the  Merger Agreement  to Chipcom  and do not
purport to be appraisals or necessarily  reflect the prices at which  businesses
or  securities actually  may be  sold. Analyses  based upon  forecasts of future
results are not necessarily  indicative of actual future  results, which may  be
significantly  more  or  less  favorable than  suggested  by  such  analyses. As
described above, the Wessels Opinion and  presentation to the Chipcom Board  was
one  of many factors taken into consideration by the Chipcom Board in making its
determination to approve the Merger Agreement.

    Wessels, Arnold  &  Henderson  assumed  and relied  upon  the  accuracy  and
completeness  of  the financial,  legal,  tax, operating  and  other information
provided by Chipcom and 3Com and did not independently verify such  information.
Further,  Wessels, Arnold & Henderson assumed  that the Merger will be accounted
for as a pooling of  interests. Wessels, Arnold &  Henderson did not perform  an
independent  evaluation  or  appraisal  of  any  of  the  respective  assets  or
liabilities of Chipcom or  3Com, nor was Wessels,  Arnold & Henderson  furnished
with  any such evaluations  or appraisals. With  respect to financial forecasts,
Wessels, Arnold  &  Henderson  assumed  that  these  forecasts  were  reasonably
prepared  on  bases  reflecting  the  best  currently  available  estimates  and
judgments of the management of Chipcom and 3Com,  as the case may be, as to  the
respective  future financial performance of Chipcom or 3Com. The Wessels Opinion
was based on  the conditions as  they existed and  the information available  to
Wessels,  Arnold & Henderson on the date  of the opinion. Events occurring after
the

                                       33
<PAGE>
date  of  the Wessels  Opinion  may materially  affect  the assumptions  used in
preparing the Wessels Opinion.  Further, the Wessels Opinion  speaks only as  of
the  date thereof and is based on the conditions as they existed and information
with which Wessels, Arnold & Henderson was supplied as of the date thereof.

    Wessels, Arnold &  Henderson is a  nationally recognized investment  banking
firm  and is regularly engaged in the  valuation of businesses and securities in
connection with mergers  and acquisitions,  negotiated underwritings,  secondary
distributions   of  listed  and  unlisted  securities,  private  placements  and
valuations for  corporations.  Wessels,  Arnold &  Henderson  is  familiar  with
Chipcom,  having  provided  certain investment  banking  and  financial advisory
services to Chipcom  from time  to time, including  having acted  as a  managing
underwriter  of the initial public offering of  Chipcom Common Stock in May 1991
and of subsequent public offerings of Chipcom Common Stock in December 1991  and
August  1993 and having  acted as a  financial advisor to  Chipcom in connection
with Chipcom's  acquisitions of  Chipcom  Europe B.V.  in  June 1992,  Artel  in
February  1994  and  DSI in  August  1994.  Chipcom selected  Wessels,  Arnold &
Henderson as  its  financial advisor  based  on Wessels,  Arnold  &  Henderson's
familiarity with Chipcom and Wessels, Arnold & Henderson's experience in mergers
and acquisitions and in securities valuation generally.

    In  the ordinary course of  business, Wessels, Arnold &  Henderson acts as a
market maker and broker  in the publicly traded  securities of 3Com and  Chipcom
and  receives customary compensation in  connection therewith, and also provides
research coverage for  3Com and  Chipcom. In  the ordinary  course of  business,
Wessels, Arnold & Henderson actively trades in the publicly traded securities of
3Com  and Chipcom for its own account and for the accounts of its customers and,
accordingly, may at any time hold a long or short position in such securities.

    Pursuant to the Engagement Letter, Chipcom paid Wessels, Arnold &  Henderson
a non-refundable retainer fee (the "Retainer Fee") of $150,000 upon execution of
the  Engagement Letter and  a non-refundable opinion fee  (the "Opinion Fee") of
$500,000 upon the rendering of the Wessels Opinion. In addition, pursuant to the
Engagement Letter, Chipcom has agreed to  pay Wessels, Arnold & Henderson,  upon
consummation  of the Merger pursuant to  the Merger Agreement, a transaction fee
(the "Transaction Fee") of between approximately $3.3 miliion and $3.6  million.
The  Retainer Fee and the  Opinion Fee will be  credited against the Transaction
Fee. Payment  of the  Transaction Fee  is contingent  upon consummation  of  the
Merger. Chipcom has also agreed to reimburse Wessels, Arnold & Henderson for its
reasonable  out-of-pocket  expenses, up  to $50,000,  and to  indemnify Wessels,
Arnold & Henderson  against certain liabilities  relating to or  arising out  of
services  performed  by  Wessels, Arnold  &  Henderson as  financial  advisor to
Chipcom. The terms of the Engagement Letter, which are customary in transactions
of this nature,  were negotiated at  arm's length between  Chipcom and  Wessels,
Arnold  & Henderson, and the Chipcom Board  was aware of such fee arrangement at
the time of its approval of the Merger Agreement.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

    As of July  31, 1995,  directors and executive  officers of  3Com and  their
affiliates  may be deemed to  be beneficial owners of  approximately 3.0% of the
outstanding shares of 3Com Common Stock.

    As of July 31, 1995, directors  and executive officers of Chipcom and  their
affiliates  may be deemed to  be beneficial owners of  approximately 3.0% of the
outstanding shares of Chipcom Common Stock. See "Information Concerning  Chipcom
--   Security  Ownership  of  Certain  Beneficial  Owners  and  Management"  for
additional information concerning such ownership.

    Certain  stock  option  agreements  previously  entered  into  with  Messrs.
Abraham,  Badavas, Cohen, Held, Meyer and Moffa  and Ms. Kokos, who are officers
of Chipcom, provide that certain unvested options granted to such officers shall
accelerate upon the closing of the Merger. Assuming the Merger is consummated on
October 13, 1995, officers would hold unvested options to acquire 507,511 shares
of Chipcom Common  Stock, the  vesting of which  will accelerate  by 12  months.
After  giving effect to  this acceleration, Officer  Options to purchase 226,815
shares of Chipcom Common Stock held  by such officers will then be  exercisable,
with exercise prices ranging from $12.75 to $41.50 per share.

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<PAGE>
    Messrs.  Burnes,  Fishman,  Onians, and  Sitter  and Ms.  Brown,  members of
Chipcom's Board of Directors, hold options to purchase 132,500 shares of Chipcom
Common stock  granted  under  Chipcom's  1991 Director  Stock  Option  Plan,  as
amended. Under the terms of said plan, all such outstanding options shall become
exercisable  in full upon the consummation of the Merger. Assuming the Merger is
consummated on October 13, 1995, these provisions will result in the accelerated
vesting of an aggregate of 77,000 shares of Common Stock subject to options held
by such directors, with exercise prices ranging from $8.34 to $32.75 per share.

    The Board  of  Directors of  Chipcom  adopted the  Chipcom  Severance  Plan,
effective  as of October 15, 1992. The Chipcom Severance Plan provides that each
executive officer  of  Chipcom  and certain  other  management  level  employees
(individually,  a "Participant") shall  be entitled to  compensation and certain
benefits upon  the  occurrence  of  a  "Triggering  Event."  Under  the  Chipcom
Severance   Plan,  a  "Triggering  Event"  shall   mean  (i)  termination  of  a
Participant's employment within  18 months  following a "change  in control"  of
Chipcom  (as  defined in  the  Chipcom Severance  Plan)  by Chipcom  unless such
termination is for "cause" (as defined in the Chipcom Severance Plan), or by the
Participant for "good  reason" (as defined  in the Chipcom  Severance Plan),  or
(ii)  death or disability of a Participant. The Merger will constitute a "change
in control" for purposes of the Chipcom Severance Plan. Upon the occurrence of a
Triggering Event within 18 months following the consummation of the Merger,  the
Participant  shall be entitled  to receive an  amount equal to  up to one year's
compensation.  In  addition,  the  exercise  dates  of  all  stock  options  and
restricted  stock awards held by the Participant will be accelerated in full and
such Participant shall be entitled to continue to receive for a period of up  to
one  year any benefits to which he or she was entitled prior to termination. The
amount, timing and duration of any payment or benefit received by a  Participant
under  the  Chipcom Severance  Plan  following termination  varies  according to
whether he or she is an executive officer or a management level employee and the
type of Triggering Event.

    For discussion of certain agreements  by 3Com to provide indemnification  of
certain  directors  and  officers  of  Chipcom,  see  "The  Merger  Agreement --
Indemnification."

ACCOUNTING TREATMENT

    The Merger is intended to qualify  as a pooling of interests for  accounting
and  financial reporting purposes. It is a condition to the Merger that 3Com and
Chipcom shall  have  received letters  from  Deloitte  & Touche  LLP  and  Price
Waterhouse  LLP, their  respective independent  accountants, to  the effect that
they know of nothing with respect to 3Com and Chipcom, respectively, that  would
prohibit  the business combination to be  effected by the Merger from qualifying
as a  pooling  of  interests transaction  under  generally  accepted  accounting
principles. Under this method of accounting, the recorded assets and liabilities
of  3Com and Chipcom  will be carried  forward to the  combined company at their
recorded amounts, income of the combined company will include income of 3Com and
Chipcom for  the entire  fiscal year  in which  the combination  occurs and  the
reported income of the separate companies for prior periods will be combined and
restated  as  income of  the  combined company.  Consummation  of the  Merger is
conditioned upon the written confirmation of such letters at the Effective Time.
See "The  Merger Agreement  --  Conditions" and  "Unaudited Pro  Forma  Combined
Financial Statements."

    The respective affiliates of 3Com and Chipcom will be requested to execute a
written  agreement to the  effect that such  person will not  transfer shares of
Common Stock  of either  3Com or  Chipcom during  the period  beginning 30  days
preceding  the  Effective  Time  and  ending on  the  date  that  3Com publishes
financial statements which reflect  30 days of combined  operations of 3Com  and
Chipcom  (which agreements  relate to  the ability  of 3Com  to account  for the
Merger as a pooling of interests).

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

    The  following  discussion  addresses   the  material  federal  income   tax
considerations  of the Merger  that are applicable to  holders of Chipcom Common
Stock. This discussion reflects the opinions of counsel attached as Exhibits 8.1
and 8.2 to the Registration Statement of which this Proxy Statement/  Prospectus
is a part (the "Exhibit Opinions"). The Exhibit Opinions each include an opinion
to  the effect  that the  Merger will  constitute a  "reorganization" within the
meaning of Section 368(a) of the

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<PAGE>
Code (a  "Reorganization"). The  Exhibit Opinions,  which are  based on  certain
assumptions  and subject to  certain limitations and  qualifications as noted in
the opinions, were delivered by Hale and Dorr and Gray Cary Ware &  Freidenrich,
A Professional Corporation.

    Chipcom  stockholders should be aware that the following discussion does not
deal with  all  federal  income  tax considerations  that  may  be  relevant  to
particular Chipcom stockholders in light of their particular circumstances, such
as  stockholders who are dealers  in securities, who are  foreign persons or who
acquired their  Chipcom Common  Stock  through stock  option or  stock  purchase
programs  or  in other  compensatory  transactions. In  addition,  the following
discussion does not  address the  tax consequences  of transactions  effectuated
prior to or after the Merger (whether or not such transactions are in connection
with  the  Merger) including,  without limitation,  the  exercise of  options or
rights to purchase Chipcom Common Stock in anticipation of the Merger.  Finally,
no foreign, state or local tax considerations are addressed herein. ACCORDINGLY,
CHIPCOM  STOCKHOLDERS ARE  URGED TO  CONSULT THEIR  OWN TAX  ADVISORS AS  TO THE
SPECIFIC TAX  CONSEQUENCES  TO THEM  OF  THE MERGER,  INCLUDING  THE  APPLICABLE
FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES TO THEM OF THE MERGER.

    The  following discussion  is based  on the  companies' respective counsels'
interpretation of the Code, applicable Treasury Regulations, judicial  authority
and  administrative ruling and practice, all as of the date hereof. The Internal
Revenue Service (the "IRS") is not precluded from adopting a contrary  position.
In  addition, there  can be  no assurance  that future  legislative, judicial or
administrative changes or interpretations will not adversely affect the accuracy
of the  statements  and  conclusions  set forth  herein.  Any  such  changes  or
interpretations  could  be  applied  retroactively  and  could  affect  the  tax
consequences  of  the   Merger  to   3Com,  Chipcom   and/or  their   respective
stockholders.

    Subject  to the limitations and qualifications  referred to herein, and as a
result of the Merger's qualifying as a Reorganization, the companies' respective
counsel are of the opinion that:

        (a) No gain or loss will be recognized by the holders of Chipcom  Common
    Stock  upon the  receipt of  3Com Common Stock  solely in  exchange for such
    Chipcom Common Stock in the Merger (except to the extent of cash received in
    lieu of fractional shares);

        (b) The aggregate  tax basis  of the 3Com  Common Stock  so received  by
    Chipcom  stockholders in the Merger (including  any fractional share of 3Com
    Common Stock not actually  received) will be the  same as the aggregate  tax
    basis of the Chipcom Common Stock surrendered in exchange therefor;

        (c)  The holding  period of  the 3Com Common  Stock so  received by each
    Chipcom stockholder in  the Merger  will include  the period  for which  the
    Chipcom  Common Stock surrendered in exchange  therefor was considered to be
    held, provided that  the Chipcom Common  Stock so surrendered  is held as  a
    capital asset at the Effective Time;

        (d) Cash payments received by holders of Chipcom Common Stock in lieu of
    receipt  of a fractional  share of 3Com  Common Stock will  be treated as if
    such fractional share of 3Com Common Stock had been issued in the Merger and
    then redeemed by 3Com; and

        (e) None of 3Com, Sub or Chipcom will recognize gain or loss solely as a
    result of the Merger.

    Neither 3Com nor Chipcom has requested  a ruling from the IRS in  connection
with  the Merger. However,  it is a  condition of the  respective obligations of
3Com and Chipcom to consummate the  Merger that such parties receive  confirming
tax  opinions from their respective legal counsel to the effect that for federal
income tax purposes, the  Merger will constitute  a Reorganization. The  Exhibit
Opinions  are  not intended  to satisfy  this  closing condition.  These closing
opinions, which  are collectively  referred  to herein  as the  "Tax  Opinions,"
neither  bind the IRS nor preclude the IRS from adopting a contrary position. As
with the  Exhibit  Opinions,  the  Tax  Opinions  will  be  subject  to  certain

                                       36
<PAGE>
assumptions  and qualifications and will  be based on the  truth and accuracy of
certain representations of 3Com, Chipcom  and Sub, including representations  in
certain certificates of the respective management of 3Com, Chipcom and Sub dated
on or prior to the date of this Proxy Statement/Prospectus.

    A  successful IRS challenge to the Reorganization status of the Merger would
result in a Chipcom  stockholder recognizing gain or  loss with respect to  each
share  of Chipcom Common  Stock surrendered equal to  the difference between the
stockholder's basis in such share and the fair market value, as of the Effective
Time, of the 3Com Common Stock received  in exchange therefor. In such event,  a
Chipcom stockholder's aggregate basis in the 3Com Common Stock so received would
equal its fair market value, and the stockholder's holding period for such stock
would begin the day after the Merger.

    Even  if the Merger qualifies as a  Reorganization, a recipient of shares of
3Com Common  Stock would  recognize gain  to the  extent that  such shares  were
considered  to  be received  in exchange  for services  or property  (other than
solely Common Stock of Chipcom). All or a portion of such gain may be taxable as
ordinary income. Gain  would also have  to be  recognized to the  extent that  a
Chipcom   stockholder  was   treated  as  receiving   (directly  or  indirectly)
consideration other than 3Com  Common Stock in exchange  for the Chipcom  Common
Stock.

REGULATORY APPROVALS

    ANTITRUST.   Under the HSR  Act and the rules  promulgated thereunder by the
Federal Trade Commission (the  "FTC"), the Merger may  not be consummated  until
notifications  have been given and certain information has been furnished to the
FTC and the  Antitrust Division  of the  Department of  Justice (the  "Antitrust
Division")  and specified waiting period  requirements have been satisfied. 3Com
and Chipcom filed notification and report forms  under the HSR Act with the  FTC
and  the Antitrust Division on August 11, 1995. The waiting period under the HSR
Act expired on September 10, 1995. At  any time before or after consummation  of
the  Merger, and notwithstanding  the expiration of the  HSR Act waiting period,
the Antitrust Division  or the FTC  could take such  action under the  antitrust
laws  as  it deems  necessary  or desirable  in  the public  interest, including
seeking to  enjoin the  consummation of  the Merger  or seeking  divestiture  of
substantial assets of 3Com or Chipcom. At any time before or after the Effective
Time  of the Merger, and  notwithstanding the expiration of  the HSR Act waiting
period, any state could take  such action under the  antitrust laws as it  deems
necessary or desirable in the public interest. Such action could include seeking
to  enjoin the consummation of  the Merger or seeking  divestiture of Chipcom or
businesses of  3Com or  Chipcom. Private  parties may  also seek  to take  legal
action under the antitrust laws under certain circumstances.

    Based  on information available  to them, 3Com and  Chipcom believe that the
Merger can be  effected in  compliance with  federal and  state antitrust  laws.
However,  there can be no assurance that  a challenge to the consummation of the
Merger on antitrust grounds will not be  made or that, if such a challenge  were
made,  3Com and Chipcom would prevail or would not be required to accept certain
conditions, including certain divestitures, in order to consummate the Merger.

FEDERAL SECURITIES LAW CONSEQUENCES

    All shares of  3Com Common  Stock received  by Chipcom  stockholders in  the
Merger  will be  freely transferable,  except that  shares of  3Com Common Stock
received by persons who are deemed to  be "affiliates" (as such term is  defined
under  the Securities Act) of Chipcom prior to  the Merger may be resold by them
only in transactions permitted by the resale provisions of Rule 145  promulgated
under  the Securities Act  (or Rule 144 in  the case of  such persons who become
affiliates of 3Com) or as otherwise permitted under the Securities Act.  Persons
who  may  be  deemed to  be  affiliates  of Chipcom  or  3Com  generally include
individuals or entities  that control, are  controlled by, or  are under  common
control  with, such party and may include certain officers and directors of such
party as well  as principal  stockholders of  such party.  The Merger  Agreement
requires  Chipcom to  use its best  efforts to  cause each of  its affiliates to
execute a written agreement  to the effect  that such person  will not offer  to

                                       37
<PAGE>
sell  or otherwise dispose of  any of the shares of  3Com Common Stock issued to
such person in or pursuant to the  Merger in violation of the Securities Act  or
the rules and regulations promulgated by the Commission thereunder.

NASDAQ NATIONAL MARKET QUOTATION

    It  is a condition to the Merger that  the shares of 3Com Common Stock to be
issued pursuant to the Merger Agreement and required to be reserved for issuance
in connection with the Merger be  approved for quotation on the Nasdaq  National
Market.  An application  has been  filed for listing  the shares  of 3Com Common
Stock on the Nasdaq National Market.

NO APPRAISAL RIGHTS

    Holders of Chipcom Common  Stock are not  entitled to dissenters'  appraisal
rights  under the DGCL in connection with  the Merger because the Chipcom Common
Stock is listed  on the Nasdaq  National Market  and the shares  of 3Com  Common
Stock  which such  holders will  be entitled  to receive  in the  Merger will be
listed on the Nasdaq National Market at the Effective Time.

CERTAIN LEGAL PROCEEDINGS

    On August 2, 1995, a complaint  (the "Delaware Complaint") was filed in  the
Delaware Court of Chancery, New Castle County, entitled LUCILLE NAPPO V. CHIPCOM
CORP.,  GERALD G. FISHMAN, FRANK A. ONIANS, JOHN ROBERT HELD, RICHARD M. BURNES,
JR., VICTORIA A. BROWN, WILLIAM H. SITTER AND 3COM CORP. The plaintiff,  Lucille
Nappo,  who claims to be a stockholder  of Chipcom, asserts that Chipcom and its
Board of Directors (the "Chipcom  Defendants") violated their fiduciary duty  to
Chipcom  stockholders by remaining  fully committed to  the proposed merger with
3Com announced on July 27, 1995 and by not seeking other bids for Chipcom. As to
3Com, liability is asserted  on the basis  of its alleged role  as an aider  and
abetter of the alleged breaches of duties by the Chipcom Defendants.

    As  relief,  the  plaintiff  seeks,  among  other  things,  preliminary  and
permanent relief, including  injunctive relief, compensatory  damages and  costs
and  disbursements associated with the  Delaware Complaint, including reasonable
attorneys' fees.

    Neither the Chipcom Defendants nor 3Com  have been served with the  Delaware
Complaint.

    The  Chipcom Defendants and 3Com believe that they have meritorious defenses
to the claims alleged in the Delaware Complaint.

                                       38
<PAGE>
                              THE MERGER AGREEMENT

    The following  is  a brief  summary  of  certain provisions  of  the  Merger
Agreement,   a  copy   of  which   is  attached  as   Annex  A   to  this  Proxy
Statement/Prospectus and  incorporated  herein  by reference.  Such  summary  is
qualified  in its entirety by reference to the Merger Agreement. Stockholders of
Chipcom are  urged to  read the  Merger Agreement  in its  entirety for  a  more
complete description of the Merger.

THE MERGER

    The  Merger Agreement provides that, following  the approval and adoption of
the Merger Agreement  by the  stockholders of  Chipcom and  the satisfaction  or
waiver  of the other conditions to the Merger,  Sub will be merged with and into
Chipcom, with Chipcom  continuing as the  surviving corporation (the  "Surviving
Corporation"), which shall be a wholly-owned subsidiary of 3Com.

    If  all such conditions  to the Merger  are satisfied or  waived, the Merger
will become effective  upon the filing  by the Surviving  Corporation of a  duly
executed  Certificate of  Merger with  the Secretary  of State  of the  State of
Delaware or at such time thereafter as is provided in the Certificate of Merger.

CONVERSION OF SECURITIES

    Upon consummation  of the  Merger, pursuant  to the  Merger Agreement,  each
issued and outstanding share of Chipcom Common Stock (other than shares owned by
Chipcom  as treasury stock or by 3Com,  Sub or any other wholly-owned subsidiary
of 3Com, all  of which will  be canceled) will  be converted into  the right  to
receive  (a) 1.06 shares  of 3Com Common  Stock and (b)  the related 3Com Common
Stock  Purchase  Rights.  See  "Description  of  3Com  Capital  Stock  --   3Com
Shareholder  Rights Plan." Based upon the  capitalization of Chipcom and 3Com as
of July  31,  1995,  the  stockholders  of  Chipcom  immediately  prior  to  the
consummation  of  the Merger  will own  approximately  11.1% of  the outstanding
shares of 3Com Common Stock immediately following consummation of the Merger. If
any holder of  shares of Chipcom  Common Stock  would be entitled  to receive  a
number of shares of 3Com Common Stock that includes a fraction, then, in lieu of
a  fractional share, such holder  will be entitled to  receive cash in an amount
equal to such fractional part of a share of 3Com Common Stock multiplied by  the
average of the last reported sale price of 3Com Common Stock, as reported on the
Nasdaq  National Market, on  each of the ten  trading days immediately preceding
the date  of the  Effective Time.  Each share  of Sub  Common Stock  issued  and
outstanding  immediately prior to the Effective  Time will be converted into one
share of Common Stock of the Surviving Corporation.

    Promptly after the Effective  Time, The First National  Bank of Boston  (the
"Exchange  Agent") will mail transmittal forms and exchange instructions to each
holder of record of Chipcom  Common Stock to be  used to surrender and  exchange
certificates   evidencing  shares  of  Chipcom  Common  Stock  for  certificates
evidencing the  shares of  3Com Common  Stock to  which such  holder has  become
entitled.  After receipt of such transmittal  forms, each holder of certificates
formerly representing  Chipcom  Common Stock  will  be able  to  surrender  such
certificates  to  the  Exchange Agent,  and  each  such holder  will  receive in
exchange therefor certificates  evidencing the  number of whole  shares of  3Com
Common  Stock to which such holder is entitled and any cash which may be payable
in lieu of a fractional share of 3Com Common Stock. Such transmittal forms  will
be accompanied by instructions specifying other details of the exchange. CHIPCOM
STOCKHOLDERS  SHOULD  NOT  SEND  IN  THEIR  CERTIFICATES  UNTIL  THEY  RECEIVE A
TRANSMITTAL FORM.

    After the Effective Time, each certificate evidencing Chipcom Common  Stock,
until  so  surrendered  and exchanged,  will  be  deemed, for  all  purposes, to
evidence only the right  to receive the  number of whole  shares of 3Com  Common
Stock  which the holder of such certificate is entitled to receive and the right
to receive any cash payment in lieu of a fractional share of 3Com Common  Stock.
The  holder of such unexchanged certificate will  not be entitled to receive any
dividends or other distributions payable by 3Com until the certificate has  been
exchanged.  Subject  to  applicable  laws,  such  dividends  and  distributions,
together with any  cash payment in  lieu of  a fractional share  of 3Com  Common
Stock, will be paid without interest.

                                       39
<PAGE>
REPRESENTATIONS AND WARRANTIES

    The   Merger  Agreement  contains   various  customary  representations  and
warranties relating  to, among  other things,  (a) the  due organization,  valid
existence  and  good  standing  of  each of  3Com,  Chipcom  and  each  of their
respective subsidiaries and certain similar  corporate matters; (b) the  capital
structure  of  each  of  3Com and  Chipcom;  (c)  the  authorization, execution,
delivery and enforceability  of the  Merger Agreement, the  consummation of  the
transactions  contemplated  by the  Merger  Agreement and  related  matters; (d)
conflicts  under  charters  or  by-laws,  required  consents  or  approvals  and
violations  of any  instruments or law;  (e) documents  and financial statements
filed by  each of  3Com and  Chipcom with  the Commission  and the  accuracy  of
information  contained therein; (f) undisclosed  liabilities; (g) the absence of
certain material adverse changes or events;  (h) taxes, tax returns and  audits;
(i)  properties;  (j)  intellectual  property;  (k)  agreements,  contracts  and
commitments; (l) litigation; (m) environmental matters, hazardous materials  and
hazardous  materials activities; (n) employee benefit plans; (o) compliance with
laws; (p) matters affecting the availability of pooling of interests accounting;
(q) interested party transactions; (r)  the accuracy of information supplied  by
each  of 3Com and Chipcom in connection with the Registration Statement and this
Proxy Statement/Prospectus; (s)  the absence of  pending discussions with  other
parties;  (t) opinions of financial advisors;  (u) inapplicability to the Merger
of certain provisions of the DGCL; and (v) the interim operations of Sub.

CERTAIN COVENANTS AND AGREEMENTS

    Pursuant to the Merger Agreement, Chipcom has agreed that, during the period
from the  date of  the Merger  Agreement  until the  Effective Time,  except  as
otherwise  consented to  in writing  by 3Com  or as  contemplated by  the Merger
Agreement, Chipcom and its subsidiaries will:  (a) carry on its business in  the
ordinary  course in substantially  the same manner  as previously conducted; (b)
pay its debts and taxes when due subject to good faith disputes over such  debts
or taxes, and pay or perform other obligations when due; (c) preserve intact its
present business organization; (d) not accelerate, amend or change the period of
exercisability  of  options granted  under any  employee  stock plan,  except as
required pursuant to  the plan  or any related  agreement; (e)  not transfer  or
license  or otherwise  extend, amend  or modify  any rights  to its intellectual
property rights, other than in the  ordinary course of business consistent  with
past  practices;  (f)  not  declare  or  pay  any  dividends  on  or  make other
distributions in respect of any of  its capital stock, not effect certain  other
changes  in its capitalization, and not  purchase or otherwise acquire, directly
or indirectly, any  shares of its  capital stock except  from former  employees,
directors  and  consultants  in  accordance with  agreements  providing  for the
repurchase of shares  in connection  with the  termination of  service; (g)  not
issue,  or authorize or propose the issuance of, any shares of its capital stock
or  securities  convertible   into  shares   of  its  capital   stock,  or   any
subscriptions,  rights,  warrants, or  options to  acquire, or  other agreements
obligating it to issue any such shares or other convertible securities,  subject
to  certain exceptions; (h) not engage  in material acquisitions; (i) subject to
certain exceptions, not sell,  lease, license or  otherwise dispose of  material
properties  or assets; (j) not increase the compensation payable to its officers
or employees  (except  for  increases consistent  with  past  practices),  grant
additional severance or termination pay or enter into employment agreements with
officers  or any non-officer employee (except in accordance with past practice),
enter into any collective bargaining  agreement or establish, adopt, enter  into
or  amend any  plan for  the benefit of  its directors,  officers, or employees,
subject to certain  exceptions; (k)  not revalue  any of  its assets,  including
writing  down the value of inventory or writing off notes or accounts receivable
other than in the  ordinary course of business;  (l) not incur indebtedness  for
money  borrowed (or guarantees  thereof) other than  indebtedness incurred under
existing lines  of credit  consistent with  prior practice;  (m) not  amend  its
Restated  Certificate of Incorporation or Bylaws,  except as contemplated by the
Merger Agreement; (n) not take any action that would or is reasonably likely  to
result  in any  of its representations  and warranties becoming  untrue; (o) not
incur material capital expenditures;  (p) promptly notify 3Com  of any event  or
occurrence not in the ordinary course of business where such event or occurrence
would  result in a breach of any covenant of Chipcom or cause any representation
or warranty of  Chipcom to be  untrue; and (q)  confer on a  regular basis  with

                                       40
<PAGE>
3Com  on operational matters of materiality. On  August 1, 1995, 3Com waived the
prohibitions summarized in clauses (f) and  (g) above with respect to  Chipcom's
adoption  of the  Chipcom Stockholder  Rights Plan.  See "Information Concerning
Chipcom -- Chipcom Stockholder Rights Plan."

    Pursuant to the Merger  Agreement, 3Com has agreed  that, during the  period
from  the  date of  the Merger  Agreement  until the  Effective Time,  except as
otherwise consented to in  writing by Chipcom or  as contemplated by the  Merger
Agreement,  3Com and  its subsidiaries  will: (a) carry  on its  business in the
ordinary course in substantially  the same manner  as previously conducted;  (b)
pay  its debts and taxes when due subject to good faith disputes over such debts
or taxes, and pay or perform other obligations when due; (c) preserve intact its
present business organization; (d) not declare  or pay any dividends on or  make
other  distributions in respect  of any of  its capital stock  (other than stock
splits of  its Common  Stock or  stock  dividends payable  in shares  of  Common
Stock), not effect certain other changes in its capitalization, and not purchase
or  otherwise acquire, directly  or indirectly, any shares  of its capital stock
except from  former  employees, directors  and  consultants in  accordance  with
agreements  providing  for  the  repurchase of  shares  in  connection  with the
termination of  service;  (e) not  engage  in acquisitions  involving  aggregate
consideration  in excess of  $1 billion; (f) subject  to certain exceptions, not
sell, lease, or  otherwise dispose  of material  properties or  assets; (g)  not
amend  its Articles  of Incorporation or  Bylaws, except as  contemplated by the
Merger Agreement; (h) not take any action that would or its reasonably likely to
result in any  of its representations  and warranties becoming  untrue; and  (i)
confer on a regular basis with Chipcom on operational matters of materiality.

NO SOLICITATION

    The Merger Agreement provides that Chipcom will not, directly or indirectly,
through any officer, director, employee, representative or agent of Chipcom, (i)
solicit,  initiate or encourage  any inquiries or  proposals that constitute, or
could reasonably be  expected to  lead to,  a proposal  or offer  for a  merger,
consolidation,  business combination, sale of substantial assets, sale of shares
of capital stock  (including without  limitation by way  of a  tender offer)  or
similar  transactions involving Chipcom  or any of  its subsidiaries, other than
the transactions  contemplated by  the Merger  Agreement (any  of the  foregoing
inquiries  or  proposals  being  referred  to  in  the  Merger  Agreement  as an
"Acquisition Proposal"), (ii) engage in negotiations or discussions  concerning,
or  provide any non-public information to any  person or entity relating to, any
Acquisition Proposal, or (iii)  agree to, approve  or recommend any  Acquisition
Proposal;  PROVIDED,  HOWEVER, that  nothing contained  in the  Merger Agreement
shall prevent  Chipcom  or the  Chipcom  Board from  (A)  furnishing  non-public
information to, or entering into discussions or negotiations with, any person or
entity  in connection with an unsolicited bona fide written Acquisition Proposal
by such person or entity (including  a new and unsolicited Acquisition  Proposal
received by Chipcom after the execution of the Merger Agreement from a person or
entity  whose initial  contact with Chipcom  may have been  solicited by Chipcom
prior to  the  execution  of  the Merger  Agreement)  or  recommending  such  an
unsolicited  bona  fide  written  Acquisition Proposal  to  the  stockholders of
Chipcom, if and only to the extent  that (1) the Chipcom Board believes in  good
faith  (after  consultation with  and  based upon  the  advice of  its financial
advisor) that  such Acquisition  Proposal  would, if  consummated, result  in  a
transaction more favorable to the Chipcom stockholders from a financial point of
view  than the transaction  contemplated by the Merger  Agreement (any such more
favorable Acquisition Proposal being referred  to as a "Superior Proposal")  and
the  Chipcom Board  determines in good  faith after consultation  with and based
upon the  advice of  outside legal  counsel that  such action  is necessary  for
Chipcom to comply with its fiduciary duties to its stockholders under applicable
law and (2) prior to furnishing such non-public information to, or entering into
discussions  or  negotiations with,  such person  or  entity, the  Chipcom Board
receives from such person or  entity an executed confidentiality agreement  with
terms  no more favorable  to such party  than those contained  in the reciprocal
non-disclosure agreement between 3Com  and Chipcom; or  (B) complying with  Rule
14e-2 promulgated under the Exchange Act with regard to an Acquisition Proposal.

    Chipcom  is required to notify 3Com (orally  and in writing) within 24 hours
after receipt of any Acquisition Proposal or request for non-public  information
or  access to its properties, books or records in connection with an Acquisition
Proposal.

                                       41
<PAGE>
RELATED MATTERS AFTER THE MERGER

    At the Effective Time, Sub will be merged with and into Chipcom, and Chipcom
will be the surviving  corporation and a wholly-owned  subsidiary of 3Com.  Each
share  of  Sub Common  Stock  issued and  outstanding  immediately prior  to the
Effective Time will  be converted  into and  exchanged for  one validly  issued,
fully  paid  and  nonassessable  share  of  Chipcom  Common  Stock.  Each  stock
certificate of Sub  evidencing ownership of  any such shares  shall continue  to
evidence ownership of such shares of Chipcom Common Stock.

    Unless  otherwise determined  by 3Com  prior to  the Effective  Time, at the
Effective Time  the Restated  Certificate  of Incorporation  of Chipcom,  as  in
effect immediately prior to the Effective Time and as amended in accordance with
the provisions of the Merger Agreement, will be the Certificate of Incorporation
of  the Surviving Corporation. The Bylaws of Sub, as in effect immediately prior
to the Effective Time, will be the Bylaws of the Surviving Corporation.

    The directors of  Sub immediately prior  to the Effective  Time will be  the
initial  directors of the Surviving Corporation. After the Effective Time, it is
expected that  the current  officers  of Chipcom  will  continue as  members  of
management of Chipcom, which will operate as a wholly-owned subsidiary of 3Com.

    After  the Effective Time, all shares of  Chipcom Common Stock will cease to
be quoted on  the Nasdaq  National Market,  and the  Surviving Corporation  will
undertake  to terminate registration of Chipcom  Common Stock under the Exchange
Act.

INDEMNIFICATION

    The Merger Agreement  provides that Chipcom  shall, and from  and after  the
Effective  Time, 3Com and the Surviving Corporation shall, indemnify, defend and
hold harmless each person who was as of the date of the Merger Agreement or  has
been  at  any time  prior  to the  date  thereof, or  who  becomes prior  to the
Effective Time,  an officer,  director or  employee  of Chipcom  or any  of  its
subsidiaries  against all losses, claims,  damages, costs, expenses, liabilities
or judgments or amounts  that are paid  in settlement with  the approval of  the
indemnifying  party (which approval shall not be unreasonably withheld) of or in
connection with any claim,  action, suit, proceeding  or investigation based  in
whole  or in part on, or arising in whole  or in part out of, the fact that such
person is or was a director, officer  or employee of Chipcom or any  subsidiary,
whether  pertaining  to any  matter existing  or  occurring at  or prior  to the
Effective Time and whether  asserted or claimed  prior to, or  at or after,  the
Effective  Time  ("Indemnified  Liabilities"), and  all  Indemnified Liabilities
based in  whole or  in part  on, or  arising  in whole  or in  part out  of,  or
pertaining  to the Merger Agreement or the transactions contemplated thereby, in
each case to the full extent that  a corporation is permitted under the DGCL  to
indemnify  its own directors, officers  or employees, as the  case may be. After
the Effective Time, 3Com and the Surviving Corporation will fulfill and honor in
all respects  the obligations  of Chipcom  pursuant to  Restated Certificate  of
Incorporation  of  Chipcom  and  any  indemnification  agreements  with  Chipcom
directors and officers existing as of the date of the Merger Agreement.

    In addition, 3Com has agreed to maintain, or cause the Surviving Corporation
to maintain, in effect a policy or policies of directors and officers  liability
insurance  with coverage substantially  comparable to policies  in force through
June 29, 1995 covering the directors and  officers of Chipcom as of the date  of
the  Merger Agreement  for a  period of  not less  than six  years following the
Effective Time; PROVIDED,  HOWEVER, should  comparable coverage at  any time  be
unavailable  at  an  annual  premium  of less  than  $400,000,  3Com  and/or the
Surviving Corporation shall only be required  to obtain such lesser coverage  as
may be obtained for such amount.

                                       42
<PAGE>
CONDITIONS

    The  respective obligations  of 3Com  and Chipcom  to effect  the Merger are
subject to  the following  conditions, among  others: (a)  the Merger  Agreement
shall  have been approved  and adopted by  the stockholders of  Chipcom; (b) the
waiting period applicable to  the consummation of the  Merger under the HSR  Act
shall   have  expired  or   been  terminated;  (c)   all  material  governmental
authorizations, consents, orders or approvals shall have been obtained; (d)  the
Registration  Statement shall have become effective and shall not be the subject
of a  stop  order  or  proceedings  seeking  a  stop  order;  (e)  no  temporary
restraining  order, preliminary or permanent injunction  or other order shall be
in effect nor shall there  be any proceeding seeking  any of the foregoing  that
prevents,  or seeks to  prevent, the consummation  of the Merger;  (f) no action
shall be taken, nor  any statute, rule, regulation,  or order enacted,  entered,
enforced  or deemed applicable to the Merger which makes the consummation of the
Merger illegal; (g) the receipt  of letters of Deloitte  & Touche LLP and  Price
Waterhouse  LLP by 3Com and Chipcom, respectively,  dated as of the date of this
Proxy Statement/Prospectus  and  confirmed in  writing  at the  Effective  Time,
stating  that they know of nothing  that would prohibit the business combination
from qualifying as a pooling  of interests transaction under generally  accepted
accounting  principles  (see  "The  Merger --  Accounting  Treatment");  (h) the
approval of the  shares of  3Com Common  Stock to be  issued in  the Merger  for
quotation  on  the Nasdaq  National Market;  (i)  receipt by  3Com of  a written
opinion from Gray Cary Ware  & Freidenrich, A Professional Corporation,  counsel
to  3Com, and  receipt by  Chipcom of an  opinion of  Hale and  Dorr, counsel to
Chipcom, both to the effect that the  Merger will be treated for Federal  income
tax  purposes as a tax-free reorganization  within the meaning of Section 368(a)
of the Code (see "The Merger  -- Certain Federal Income Tax Consequences");  (j)
receipt  by  3Com  of all  state  securities  or "Blue  Sky"  permits  and other
authorizations necessary to issue  shares of 3Com Common  Stock pursuant to  the
Merger;  (k) the  accuracy in all  material respects of  the representations and
warranties of the other party set forth in the Merger Agreement, subject to  the
specific  provisions described  below; and (l)  the performance  in all material
respects of all obligations  of the other party  required to be performed  under
the Merger Agreement.

    For  purposes  of  determining  the  accuracy  of  the  representations  and
warranties of  Chipcom  relating to  the  absence of  certain  material  adverse
changes,  as of the Closing Date, the  following events or occurrences shall not
be deemed to constitute a material adverse change to the extent that they result
in substantial part as  a consequence of the  public announcement of the  Merger
Agreement or the terms of the Merger: (a) a reduction in Chipcom's revenues from
IBM;  (b)  a  reduction in  Chipcom's  revenues from  switching  products and/or
stackable hub products as  a result of Chipcom's  endorsement of 3Com  products;
(c)  reduction or  cancellation of orders  by other major  customers of Chipcom,
particularly  customers  who   are  competitors  of   3Com;  (d)  reduction   or
cancellation  of orders in  Chipcom's reseller channel while  the effects of the
proposed Merger are  assessed; (e)  a slowdown  in the  activities of  Chipcom's
field  organization while the  effects of the proposed  Merger are assessed; (f)
termination  of  agreements  between   Chipcom  and  third  parties,   including
resellers;  or (g)  loss of  key employees and  the impact  thereof on Chipcom's
operations. In addition, material adverse developments in securities  litigation
currently  pending against Chipcom shall not be  deemed to be a material adverse
change for such purpose.

STOCK OPTION AND BENEFIT PLANS

    At the Effective Time, each outstanding option to purchase shares of Chipcom
Common Stock (a "Chipcom Stock Option") under the Chipcom Stock Option Plan  and
the  1991 Director Option Plan or  stock option agreements otherwise outstanding
(the "Chipcom Option  Plans"), whether vested  or unvested, shall  be deemed  to
constitute  an  option to  acquire, on  the  same terms  and conditions  as were
applicable under such Chipcom Stock Option, the number of shares of 3Com  Common
Stock  (rounded down to the nearest whole  number) as the holder of such Chipcom
Stock Option would have been entitled to receive pursuant to the Merger had such
holder exercised such option in full immediately prior to the Effective Time, at
a price  per share  (rounded up  to the  nearest whole  cent) equal  to (x)  the
aggregate  exercise  price  for the  shares  of Chipcom  Common  Stock otherwise
purchasable pursuant to such Chipcom Stock  Option divided by (y) the number  of
whole shares of 3Com Common

                                       43
<PAGE>
Stock  deemed purchasable  pursuant to such  Chipcom Stock  Option as determined
above as of July 31, 1995. Chipcom Stock Options to acquire 2,343,104 shares  of
Chipcom  Common Stock were outstanding under  the Chipcom Option Plans. See "The
Merger -- Interests of Certain Persons  in the Merger" for information  relating
to  the  acceleration  of the  vesting  provisions  of options  held  by Chipcom
officers and directors upon consummation of the Merger.

    3Com has agreed  to reserve for  issuance a sufficient  number of shares  of
3Com  Common  Stock  for  delivery  under the  Chipcom  Option  Plan  assumed as
described above. As soon as practicable  after the Effective Time, and not  more
than  10 business days  thereafter, 3Com shall file  a registration statement on
Form S-3 or Form  S-8, as the case  may be, with respect  to the shares of  3Com
Common  Stock subject to such options and shall use its best efforts to maintain
the effectiveness of such  registration statement(s) and  the current status  of
the  prospectus(s)  contained  therein  for  so  long  as  such  options  remain
outstanding. With respect to  individuals who will be  subject to the  reporting
requirements  under Section  16(a) of  the Exchange  Act after  the Merger, 3Com
agreed to administer the Chipcom Option Plan  assumed in the Merger in a  manner
that complies with Rule 16b-3 promulgated under the Exchange Act.

    Employees  of  Chipcom  as  of  the Effective  Time  shall  be  permitted to
participate in the  3Com Employee Stock  Purchase Plan commencing  on the  first
enrollment  date following  the Effective Time,  subject to  compliance with the
eligibility provisions  of the  plan.  Employees of  Chipcom will  each  receive
credit,  for purposes  of such  eligibility provisions,  for prior  service with
Chipcom.

TERMINATION; TERMINATION FEES AND EXPENSES

    The Merger Agreement may  be terminated at any  time prior to the  Effective
Time,  whether before or  after approval of the  matters presented in connection
with the Merger by the stockholders of 3Com and Chipcom:

        (a) by mutual written consent of 3Com and Chipcom;

        (b) by  either  3Com  or Chipcom  if  the  Merger shall  not  have  been
    consummated  by December 31, 1995 (provided  that the right to terminate the
    Merger Agreement under this clause shall not be available to any party whose
    failure to fulfill any  obligation under the Merger  Agreement has been  the
    cause of or resulted in the failure of the Merger to occur on or before such
    date);

        (c)  by either 3Com or  Chipcom if a court  of competent jurisdiction or
    other Governmental Entity (as  defined in the  Merger Agreement) shall  have
    issued  a nonappealable  final order,  decree or  ruling or  taken any other
    action, in each case having the effect of permanently restraining, enjoining
    or otherwise prohibiting the  Merger, except, if the  party relying on  such
    order,  decree  or  ruling  or  other  action  has  not  complied  with  its
    obligations under Section  6.7 (Legal  Conditions to Merger)  of the  Merger
    Agreement;

        (d)  by  3Com,  if,  at  the  Chipcom  Special  Meeting  (including  any
    adjournment or  postponement), the  requisite vote  of the  stockholders  of
    Chipcom  in favor of the Merger Agreement and the Merger shall not have been
    obtained;

        (e) by  3Com,  if (i)  the  Board of  Directors  of Chipcom  shall  have
    withdrawn  or modified  its recommendation  of the  Merger Agreement  or the
    Merger or shall have publicly announced or disclosed to any third party  its
    intention to do any of the foregoing; (ii) the Board of Directors of Chipcom
    shall  have  recommended  to  the  stockholders  of  Chipcom  an Alternative
    Transaction (as defined in the Merger Agreement); or (iii) a tender offer or
    exchange offer for 20% or more  of the outstanding shares of Chipcom  Common
    Stock  is commenced  (other than by  3Com or  an affiliate of  3Com) and the
    Board of Directors of  Chipcom recommends that  the stockholders of  Chipcom
    tender their shares in such tender or exchange offer; or

        (f)   by  3Com  or  Chipcom,   if  there  has  been   a  breach  of  any
    representation, warranty, covenant  or agreement  on the part  of the  other
    party  set  forth  in the  Merger  Agreement,  which breach  (i)  causes the
    conditions set forth in Sections 7.2(a)  or (b) (in the case of  termination
    by

                                       44
<PAGE>
    3Com) or 7.3(a) or (b) (in the case of termination by Chipcom) of the Merger
    Agreement (relating to the accuracy of representations and warranties of the
    other party and performance by other party of certain obligations) not to be
    satisfied  and  (ii)  shall not  have  been  cured within  10  business days
    following receipt by the  breaching party of written  notice of such  breach
    from the other party.

    In  the event of any  termination of the Merger  Agreement by either 3Com or
Chipcom as provided above, the Merger Agreement will become void and there  will
be  no  liability or  obligation  on the  part of  3Com,  Chipcom, Sub  or their
respective officers, directors, stockholders or affiliates, except to the extent
that such termination results from the willful  breach by a party of any of  its
representations,  warranties, covenants  or agreements  set forth  in the Merger
Agreement, provided that the provisions described below relating to the  payment
of fees and expenses shall survive any such termination.

    Except  as described  below, whether or  not the Merger  is consummated, all
fees, costs and expenses  incurred in connection with  the Merger Agreement  and
the  transactions contemplated thereby shall be paid by the party incurring such
expenses, except  that  all  fees  and expenses,  other  than  attorneys'  fees,
incurred   in   relation   to   the   printing   and   filing   of   this  Proxy
Statement/Prospectus shall be shared equally by 3Com and Chipcom.

    Chipcom is  required to  pay  3Com up  to  $1,000,000 as  reimbursement  for
expenses  of 3Com actually incurred relating to the transactions contemplated by
the Merger Agreement prior to termination (including fees and expenses of 3Com's
counsel, accountants and financial advisor, but excluding any discretionary fees
paid to such  financial advisor), upon  the earliest to  occur of the  following
events:  (i)  the  termination  of  the  Merger  Agreement  by  3Com  under  the
circumstances described in  paragraph (d) above  as a result  of the failure  to
receive  the requisite vote for approval of  the Merger Agreement and the Merger
by the  stockholders of  Chipcom at  the Chipcom  Special Meeting;  or (ii)  the
termination of the Merger Agreement by 3Com under the circumstances described in
paragraph (e) above.

    Chipcom  is required to pay  3Com a termination fee  of $23,000,000 upon the
earliest to occur  of the following  events: (i) the  termination of the  Merger
Agreement  by 3Com under the circumstances  described in paragraph (e) above; or
(ii) the termination  of the Merger  Agreement by 3Com  under the  circumstances
described  in paragraph  (d) above  as a  result of  the failure  to receive the
requisite vote  for approval  of the  Merger Agreement  by the  stockholders  of
Chipcom  at the Chipcom Special  Meeting if, at the  time of such failure, there
shall have been announced an Alternative  Transaction which shall not have  been
absolutely and unconditionally withdrawn and abandoned.

    Any  expenses and fees  payable as described  above are required  to be paid
within one business  day after the  first to occur  of the relevant  termination
events.  In no event shall  Chipcom be required to pay  such expenses or fees as
provided for  above, if,  immediately prior  to the  termination of  the  Merger
Agreement,  3Com was  in breach  of any  of its  material obligations  under the
Merger Agreement.

AMENDMENT AND WAIVER

    The Merger  Agreement  may  be  amended  at any  time  by  action  taken  or
authorized  by the respective Boards of Directors of 3Com and Chipcom, but after
approval by the stockholders of Chipcom  of the matters presented in  connection
with  the  Merger to  them, no  amendment shall  be made  which by  law requires
further approval by such stockholders,  without such further approval. 3Com  and
Chipcom,  by action taken or authorized by their respective Boards of Directors,
may extend the  time for performance  of the  obligations or other  acts of  the
other   parties  to  the  Merger  Agreement,   may  waive  inaccuracies  in  the
representations or warranties contained  in the Merger  Agreement and may  waive
compliance with any agreements or conditions contained in the Merger Agreement.

                                       45
<PAGE>
                          INFORMATION CONCERNING 3COM

BUSINESS

    3Com  was founded  on June  4, 1979  and pioneered  the networking industry.
Since then, 3Com has evolved from a supplier of discrete networking products  to
a  broad-based  supplier  of  LAN  and  network  access  systems  for  the large
enterprise, small business, home and telco markets. In the fiscal year ended May
31, 1995, 3Com became a $1.3 billion revenue company, offering customers a broad
range of  ISO  9000-compliant  global data  networking  solutions  that  include
routers,  hubs, remote access servers, switches and adapters for Ethernet, Token
Ring, FDDI, ATM and  other high speed networks.  Additionally, 3Com offers  ISDN
adapters  and  internetworking  products  for small  sites  and  home  users and
integrated digital remote access systems  used by network service providers  and
telecommunications  carriers.  3Com's  products  are  distributed  and  serviced
worldwide through  3Com  and  its  partners:  principally  systems  integrators,
value-added resellers, national resellers and dealers, distributors and original
equipment manufacturers.

    3Com's   name  is   derived  from   its  focus   on  COMputer  COMmunication
COMpatibility.   With    its    long-standing   commitment    to    multi-vendor
interoperability,  3Com has been a leader in defining, shaping and promoting the
growth of networking  infrastructures that  transmit data  to all  parts of  the
world quickly and efficiently. Underlying this commitment is a focus on:

    -  SIMPLICITY in the way  3Com designs and manufactures  products and in the
     way 3Com works with customers;

    -  SCALABILITY  of  products  to  allow  customers  to  purchase  networking
     components  that meet their  current requirements, with  the assurance that
     3Com has cost  effective migration  and upgrade paths  as their  networking
     needs change;

    -  VALUE by providing  high-performance products, managed  through a single,
     powerful network management application, that lower the overall cost of the
     network ownership.

    In fiscal 1991, 3Com announced several actions to accelerate the  transition
to  global data networking.  These included: (i)  the decision to  wind down the
operations of the workgroup  systems business, which  had focused on  developing
computing  platforms optimized for data  networks (network servers, workstations
and operating software),  (ii) the  amendment of 3Com's  license agreement  with
Microsoft,  making  Microsoft solely  responsible  for the  LAN  Manager network
operating software and (iii) a reduction in 3Com's workforce of approximately 12
percent. 3Com  recorded a  restructuring  charge to  operating income  of  $67.0
million related to these actions in the third quarter of fiscal 1991.

    With  the restructuring  completed, 3Com  embarked on  an aggressive product
development program, coupled with strategic acquisitions, to rebuild its product
portfolio and increase its market share  in the rapidly growing data  networking
market.

    During  fiscal 1992 and 1993, 3Com focused on building its product portfolio
with the  introduction  of  new  adapter,  hub  and  internetworking  platforms,
retrained  its  sales  force to  sell  connectivity systems  and  solutions, and
expanded its global presence with new sales offices, service centers, and "parts
banks" worldwide. The acquisition  of the data  networking products business  of
U.K.-based  BICC in January 1992 strengthened  3Com's position in the structured
wiring hub market and expanded 3Com's position in Europe. In January 1993,  3Com
enhanced  its Token  Ring technology  base with  the acquisition  of Star-Tek, a
Massachusetts-based Token  Ring hub  manufacturer.  Further, to  meet  increased
demand  for  its  network  adapter  products,  in  September  1993,  3Com  began
full-scale operations  at  its  60,000 square  foot  manufacturing  facility  in
Blanchardstown, Ireland.

    In  fiscal 1994,  3Com introduced  its High  Performance Scalable Networking
architecture with a focus on  scaling network performance and extending  network
reach.  Combined  with Transcend  network  management, HPSN  demonstrates 3Com's
ability to deliver complete connectivity systems for the enterprise and  beyond,
and  provides customers  with a  framework for  building and  managing scalable,
high-performance networking infrastructures. During the year, 3Com enhanced  its
product

                                       46
<PAGE>
offerings  under HPSN with  two strategic acquisitions.  First, in January 1994,
3Com acquired Synernetics, 3Com's long-term  development partner which was  then
the  revenue  leader in  the  LAN switching  market.  The switching  products of
Synernetics are marketed  under the LANplex  name and include  the LANplex  6000
backbone  switch and  LANplex 2000 family  of departmental  switches. Second, in
February  1994,  3Com   acquired  Centrum,   an  innovator   in  remote   access
internetworking  technology. The Centrum remote  access servers for Ethernet and
Token Ring networks are marketed under the 3Com trademark AccessBuilder.

    Additionally, in December  1993, 3Com  entered into  a technology  licensing
agreement  with Pacific  Monolithics, a wireless  communications developer, that
will allow 3Com to offer  10 megabits-per-second ("Mbps") wireless products  for
local area networks. The cost of the license was $2.5 million, substantially all
of  which was charged  to 3Com's operations  during the third  fiscal quarter of
1994 as purchased in-process technology.  Fiscal 1994 results included a  $134.5
million  pre-tax  charge  to operations  for  the combined  effect  of purchased
in-process technology related to the acquisitions and licensing agreement.  Also
during  fiscal 1994, 3Com  expanded its product offerings  with new and enhanced
adapter, internetworking  and stackable  hub  products, extended  its  worldwide
presence  with sales  offices in five  additional countries,  expanded its major
accounts sales  force  and  added  new production  lines  at  its  manufacturing
facilities in both the U.S. and Ireland.

    In  fiscal  1995, there  was  accelerated customer  migration  toward higher
performance and  geographically dispersed  networks. 3Com  expanded its  product
line  to  address this  trend with  high  performance adapters,  enhanced remote
access products, new  LAN and  ATM switches and  higher density  internetworking
platforms. Additionally, during the second quarter of fiscal 1995, 3Com acquired
substantially  all  the  assets of  Israel-based  NiceCom, an  innovator  in ATM
technology, and  also acquired  a company  developing advanced  network  adapter
technology.   The  aggregate  purchase   price  of  the   two  acquisitions  was
approximately $55.5  million,  plus $6.1  million  of costs  attributed  to  the
exchange  of the  acquired companies' stock  options for 3Com  stock options and
$2.0  million  of  costs  directly   attributable  to  the  completion  of   the
acquisitions.   Approximately  $60.8   million  of  the   total  purchase  price
represented in-process technology  and was charged  to 3Com's operations  during
the quarter.

    3Com  is also capitalizing on what it  views as a substantial opportunity in
providing connectivity solutions to the small and home office markets and to the
commercial remote access market which provides dial-up connectivity to users  of
on-line information services, value-added networks, and transaction networks. In
the  third quarter  of fiscal 1995,  3Com acquired its  ISDN adapter development
partner, New Jersey-based  AccessWorks. In  the fourth quarter  of fiscal  1995,
3Com  acquired all of the outstanding stock  of Sonix, a U.K.-based innovator in
ISDN internetworking  technology,  in  exchange for  approximately  2.4  million
shares  of 3Com Common  Stock (with a  value of approximately  $70 million as of
March 22, 1995, the date of the agreement). The transaction was closed on May 1,
1995, and was accounted for as a pooling of interests. Sonix is a market  leader
in  ISDN internetworking in  the United Kingdom, and  manufactures and markets a
portfolio of network access products  specifically designed for data and  voice.
Sonix products include low-cost Ethernet-to-ISDN, leased-line or dial-up bridges
and  routers  and  provide  connectivity among  small  dispersed  workgroups and
simple, high-performance, low-end, low-cost  connectivity between central  sites
and  remote offices. Sonix operates as  a wholly-owned subsidiary of 3Com, known
as 3Com Sonix.

    In the  fourth quarter  of  fiscal 1995,  3Com  announced the  agreement  to
acquire  all  of  the  outstanding  stock, stock  options  and  warrants  of San
Diego-based Primary  Access,  a leading  supplier  of integrated  remote  access
systems  to network service  providers worldwide, in  exchange for approximately
4.6 million shares  of 3Com Common  Stock and options  and warrants to  purchase
approximately  1.0  million  shares  of  3Com  Common  Stock  (with  a  value of
approximately $170 million as of March 21, 1995, the date of the agreement). The
transaction was accounted  for as  a pooling of  interests and  closed early  in
fiscal 1996 on June 9, 1995. Primary Access pioneered software-defined access to
public   telephone  networks  with  its   digital  Aperture  platform.  Sold  to
interexchange carriers, cellular  and local  carriers, as well  as providers  of
on-line information services, value added networks

                                       47
<PAGE>
("VANs") and transaction networks, the Aperture platform replaces fixed-function
hardware  devices such as channel banks,  modems, ISDN devices and remote access
servers in  central  data  processing  sites or  points  of  presence  ("POPs").
Customers of Primary Access include Compuserve, AT&T, MCI, Sprint, regional Bell
operating  companies, more than  15 cellular carriers and  leading banks and oil
companies. Primary Access operates as  a wholly-owned subsidiary of 3Com,  known
as 3Com Primary Access.

    3Com believes that its principal competitive advantages lie primarily in the
depth  and  breadth of  its  product line  and  a strong  yet  flexible business
infrastructure. 3Com has strong brand recognition in Ethernet adapters, which it
believes is transferable to  other product and technology  areas, as well as  in
stackable  networking  systems, LAN  switching  and remote  office  and personal
office internetworking  platforms.  Additionally,  3Com  believes  its  low-cost
manufacturing,   worldwide   presence,  flexible   distribution   strategy,  and
comprehensive service  and  support  capabilities  are  allowing  3Com  to  take
advantage  of market trends that are  extending the reach, scope and performance
of today's data networks.

  PRODUCTS

    3Com believes that its HPSN architecture, with Transcend network management,
provides customers  with  a  blueprint  for  building  and  managing  networking
infrastructures   using  both   current  and  emerging   technologies,  and  for
cost-effectively  migrating  to  higher  performance  networks  using   existing
platforms.   HPSN   defines   five   connectivity   environments   and  delivers
cost-effective, scalable systems solutions for  each, using the full breadth  of
3Com products. HPSN encourages customers to build networks to meet their current
business  objectives,  while providing  the assurance  that their  networks will
scale as they add more users and  new applications and migrate to emerging  high
performance  technologies such as 100 Mbps Ethernet  and ATM. In addition to the
five enterprise  connectivity environments  defined by  HPSN, 3Com  also  offers
software-defined  digital  access platforms  that  deliver local  access  to the
public telephone  data network  at  sites known  as  points of  presence  (POPs)
through  its  3Com  Primary  Access subsidiary.  The  five  types  of enterprise
connectivity environments  and the  point of  presence central  access site  are
defined as:

    WORKGROUP

    While early data networks were installed as a means of connecting individual
members  of a workgroup  to share files  and other computing  resources, such as
printers,  using  Ethernet   or  Token   Ring  technology,   the  trend   toward
mission-critical  applications and  client/server topologies has  created a need
for  more   sophisticated   workgroup   connectivity   with   higher   bandwidth
capabilities, enhanced resilience, and a more powerful and flexible feature set.
3Com's  industry-leading EtherLink, TokenLink and  FDDILink adapters provide the
desktop  connection  to   the  LAN,   while  3Com   LinkBuilder  stackable   and
chassis-based  hubs and  LinkSwitch workgroup switches  concentrate and redirect
network  traffic  within  the  workgroup  or  to  the  corporate  backbone.  The
SuperStack  network system, which includes hubs, bridge/routers, switches and an
SDLC converter for IBM  SNA connectivity, allows  network administrators to  add
functionality  as needed and build in fault tolerance with an optional redundant
power system.

    BUILDING/CAMPUS BACKBONE

    As the number and complexity of  workgroup networks has increased, the  need
for  sophisticated  inter-  and  intra-networking has  led  to  the  creation of
building- and campus-wide "collapsed backbone" networks to transmit data quickly
and efficiently  within  a single  site.  Collapsed backbone  networks  condense
network  traffic  from workgroup  and floor-based  hubs  and switches  along the
backplane of a single  powerful device. Working  as collapsed backbone  devices,
3Com's LANplex family of intelligent switches and NETBuilder II routers simplify
wiring  complexity, centralize  management, boost  performance and  lower costs.
Furthermore,  the  HPSN  framework  provides  for  an  economical,  step-by-step
migration  to  even  greater  performance  through  100  Mbps  Ethernet  and ATM
technologies using existing routing and switching platforms.

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<PAGE>
    WAN BACKBONE

    The WAN  backbone is  the nerve  center for  wide-area data  communications.
3Com's  high-performance NETBuilder  II routers  connect to  wide-area resources
ranging from leased lines and dial-up connections to packet-switched and digital
telephone  services.   Transcend   network   management   applications   deliver
self-managing   intelligence,  putting  wide-area  bridge/router  administration
within the power of a centrally located manager.

    REMOTE OFFICE

    The remote office is a specialized  type of workgroup environment, one  with
all the connectivity needs of a workgroup located at the corporate headquarters,
but  with  the additional  requirement that  all products  plug-and-play. 3Com's
SuperStack system provides hubbing, switching, and routing in a single stackable
system that meets the  special needs of  the remote office  for simple, easy  to
maintain,  high-performance  connectivity.  3Com's  innovative  Boundary Routing
software, running  on  the  NETBuilder  Remote  Office  router  "slice"  of  the
SuperStack  system, simplifies remote access to the corporate network and allows
managers to  maximize  their  resources and  reduce  expenses  by  consolidating
complex  operations at  headquarters. Further, the  Transcend network management
applications centralize  the  network  management  function  as  well.  Arpeggio
products  from 3Com Sonix, currently marketed in Europe, provide simplified ISDN
connectivity  for  wide-area  workgroups,  enabling  high-performance,  low-cost
connectivity  between central sites and  remote offices. Designed from inception
to optimize  ISDN technology  from the  perspective of  the small  office,  3Com
believes  the Arpeggio line  of ISDN bridges  and routers are  ideally suited to
network applications  that  require  occasional  connectivity,  such  as  retail
outlets  transmitting  daily sales  receipts, where  the  cost of  a leased-line
cannot be justified.

    PERSONAL OFFICE

    The current  trend  toward "virtual"  corporations  has resulted  in  widely
dispersed  teleworkers at home and in small  offices. There are also millions of
business travelers  and  nomadic  users  with computers  but  no  fixed  network
connections.  3Com's AccessBuilder remote access servers give these mobile users
simplified analog or digital (ISDN) dial-up access to the network. Available for
Ethernet and  Token Ring  networks  and in  stackable or  stand-alone  versions,
AccessBuilder  servers offer higher  performance and more  flexibility than less
sophisticated connection  devices,  and include  a  superior suite  of  security
measures  to block  unauthorized access.  3Com's Impact  family of  internal and
external  ISDN  adapters  replaces   traditional  modem  devices  and   provides
high-speed   digital  connectivity  to   individual  users  accessing  corporate
networks, on-line services and the Internet.

    POINTS OF PRESENCE

    Increasingly,  businesses  and  organizations  of  all  sizes,  from   large
diversified  companies to small offices and  home offices, need to connect their
data networks to  the public telephone  network to take  advantage of a  growing
array  of new data  services, on-line services  and public information networks.
The growth in  the use of  the public network  for data has  created new  market
opportunities  for  network service  providers and  telecommunications carriers.
Carriers, for example, are increasingly delivering managed data network services
from POPs, or central processing sites housing the hardware and telco  equipment
used  for transaction  processing and  switching. 3Com  Primary Access' Aperture
integrated remote  access platform  is used  in the  access sites  or points  of
presence  in many major U.S.  networks. Applications include on-line information
services such  as  CompuServe, cellular  data  networks such  as  United  Parcel
Service's Total Trak, and transaction networks such as VisaNet.

    For  the  five  environments,  3Com offers  a  broad  range  of connectivity
products categorized as network adapters and network systems products:

    PERSONAL CONNECTIVITY PRODUCTS

    3Com's personal connectivity products  include network adapters, also  known
as  network interface cards, which are  add-in printed circuit boards that allow
personal  computers,  laptop  computers,   workstations  and  personal   digital
assistants   ("PDAs")   to  connect   to   the  LAN,   remote   access  adapter,

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including digital/analog  modem products  for personal  remote connectivity  and
general  data communication  functions and PC  Card (PCMCIA)  adapters which may
include both network and remote access functionality. According to International
Data Corporation  ("IDC"), a  leading  market research  firm, 3Com  gained  five
market  share points in  calendar 1994 and  is the worldwide  leader in Ethernet
network adapters with a 34 percent market share in calendar 1994.

    In fiscal 1993,  3Com began shipping  its family of  EtherLink III  Parallel
Tasking   adapters,  based   on  a   3Com-designed  custom  application-specific
integrated circuit ("ASIC"). The innovative Parallel Tasking architecture speeds
data transfers by allowing separate tasks to be performed in parallel, resulting
in higher overall  adapter efficiency  and performance than  would otherwise  be
possible.  3Com has applied for and received  patents on certain aspects of this
technology. In fiscal 1994, 3Com introduced Ethernet PCMCIA ("PC Card") adapters
for laptop and  other portable  computers, further extending  the EtherLink  III
family.   3Com's  EtherLink  III  adapters  include  16-bit  ISA,  32-bit  EISA,
MicroChannel and Combo adapters as well as the PC Card adapter. All are designed
around 3Com's custom  ASIC, which  results in  products that  3Com believes  are
inherently more reliable, easier to install and configure, and less expensive to
manufacture.

    In  fiscal  1995,  3Com introduced  a  new, higher  performance,  lower cost
version of  its  popular  10  Mbps  EtherLink  III  adapters  and  extended  the
technology  to include the  new Fast Ethernet (100  Mbps Ethernet) standard. The
Fast EtherLink III family of network  adapters are dual speed Ethernet  adapters
capable  of transmitting data at  either 10 Mbps or  100 Mbps. 3Com believes the
Fast EtherLink  family  of adapters  provides  network managers  with  a  smooth
upgrade path to higher speed workgroup connectivity.

    In  addition to Ethernet and Fast Ethernet adapters, 3Com offers Token Ring,
FDDI and  ISDN  adapters.  Based  on the  IBM-designed  TROPIC  chipset,  3Com's
TokenLink III 16/4 family of ISA, EISA and MicroChannel adapters are designed to
work  seamlessly  with  IBM  drivers and  applications  while  offering enhanced
installation and network management features. 3Com's FDDILink family of adapters
connect devices to the  network via copper  wiring and fiber  at 100 Mbps.  When
combined   with  3Com's   FDDI  Concentrator  (hub),   FDDILink  adapters  offer
workstation and high-end PC users  a cost-effective solution for  high-bandwidth
applications.

    NETWORK SYSTEMS PRODUCTS

    3Com's    network   systems    products   include    hubs,   internetworking
bridge/routers, LAN switches  and remote  access servers,  which, when  combined
within  the  HPSN  framework,  create  a  network  infrastructure  that delivers
scalable,  cost-effective   solutions  for   each  of   the  five   connectivity
environments.  In addition, network  systems products also  include 3Com Primary
Access integrated network access systems.

    INTERNETWORKING PRODUCTS.    3Com's  internetworking  products  include  the
high-performance  RISC-based NETBuilder II bridge/routers for collapsed backbone
and wide-area network environments  and the NETBuilder  Remote Office family  of
remote  and access routers. Additionally, the AccessBuilder remote access server
provides Ethernet  and Token  Ring dial-up  connectivity for  individual  remote
users.  The NETBuilder Remote Office family of bridge/routers supports Ethernet,
Token Ring  and  ISDN  network  technologies  and  can  be  operated  as  either
conventional  stand-alone  routers  or  using  3Com's  Boundary  Routing system.
Additionally, both the  NETBuilder Remote  Office family  and the  AccessBuilder
remote access server are available as part of the SuperStack network system.

    LAN SWITCHES.  LAN switches provide cost-effective, high-speed links between
multiple  network  segments,  simplifying network  design  and  reducing network
latency in client/server  networks. 3Com offers  a full range  of LAN  switches,
including  the high density  LANplex 6000 Ethernet/FDDI  data center switch, the
LANplex 2500  Ethernet/FDDI departmental  switch and  the LinkSwitch  family  of

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stackable workgroup switches. LinkSwitch switches can operate either stand-alone
or  as part of  3Com's SuperStack network  systems. Additionally, the LinkSwitch
1200  Ethernet/FDDI  switch  is  available  as  a  module  for  the  LinkBuilder
Multi-Services Hub ("MSH") chassis-based hub.

    The development of custom ASICs for switching is central to 3Com's switching
strategy.  Virtually all  of 3Com's internally  developed switches  are based on
custom-designed ASICs, which 3Com believes will dramatically improve performance
and reliability while reducing costs. Switching ASICs developed by 3Com  include
the  Intelligent Switching  Engine ("ISE") chip  for Ethernet-to-FDDI switching,
the Brasica  chip for  Ethernet and  Fast Ethernet  switching, the  ZipChip  for
Ethernet-to-ATM  switching and  the Token Ring  Switching Engine  for Token Ring
switching.

    HUBS.  3Com  designs, manufactures  and markets  a full  range of  Ethernet,
Token  Ring and FDDI  hubs in either  stackable or chassis-based configurations.
3Com's stackable hubs, including the LinkBuilder FMS for Ethernet and Token Ring
networks,  provide  users  a   highly  reliable,  cost-effective  solution   for
networking workgroups and remote offices.

    In fiscal 1994, 3Com expanded its hub offerings with the 24-port LinkBuilder
FMS  stackable  hub,  the LinkBuilder  FDDI  workgroup hub  and  a re-engineered
12-port LinkBuilder  TP.  In  addition,  3Com  enriched  its  chassis  hub,  the
LinkBuilder   MSH,  with  Ethernet-to-FDDI  switching,  FDDI  concentration  and
advanced Token Ring technology.  The powerful backplane  of the LinkBuilder  MSH
supports  Ethernet, Token Ring and FDDI  connectivity today and ATM connectivity
in the future.

    In fiscal  1995,  3Com enhanced  its  RMON network  management  capabilities
across  its hub products line, introduced internetworking bridge modules for its
stackable hubs, and introduced  new products designed  for telco and  small/home
office  markets. The  LinkBuilder TP/8,  a simple  unmanaged 8-port  hub with an
extremely small footprint, is  designed specifically for  the growing number  of
small businesses and home users who want to connect multiple devices in a simple
structured wiring network without making a major hardware investment.

    NETWORK MANAGEMENT.  In September 1993, 3Com introduced the Transcend family
network  management  applications  that  represents  a  significant  advance  in
simplified and  logical  management  of  local and  wide  area  networks.  Using
Transcend  applications  on the  network  management platform  of  their choice,
network administrators  are able  to  create logical  groups of  hubs,  routers,
servers  and  desktop  devices,  regardless  of  physical  location,  to  obtain
correlated   management   information   and   control.   To   simplify   network
administration,  Transcend  products also  leverage administrative  resources by
consolidating repetitive  tasks, such  as downloading  router software,  into  a
single command.

    INTEGRATED  NETWORK  ACCESS  SYSTEMS.   Integrated  network  access systems,
offered through 3Com  Primary Access,  are installed  in the  point of  presence
central  access site to  provide local access  to data over  the public switched
network. For example, a user calling  up information on CompuServe would dial  a
local  number to be connected to  CompuServe's data network, regardless of where
the data actually resided. 3Com Primary Access' software defined network  access
system,  known as the Aperture System, replaces a variety of hardware components
traditionally used  in the  POP,  such as  channel  banks, dial  or  leased-line
modems,  channel service  units ("CSUs"),  data service  units ("DSUs") terminal
servers, packet assembler/disassemblers  ("PADs") and  switches. Since  Aperture
functionality  is  software-defined,  users  can  re-define  and  change  access
capabilities to  meet  changing  market conditions  by  simply  downloading  new
software  from a central location. Contrasted  with the hardware solution, which
requires site visits to replace  equipment and make modifications, the  Aperture
product's software-based approach enables network providers to get data services
to market faster, improves network flexibility and reliability and reduces costs
for network management, maintenance and access.

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    OTHER PRODUCTS

    Other products include communication servers, which provide terminal-to-host
connectivity  for terminals and workstations over the network, protocol software
and worldwide service and support programs.

  PRODUCT DEVELOPMENT

    3Com's product development efforts are focused exclusively on its  strategic
product  lines: adapters, integrated network  access systems and network systems
products. 3Com's ownership of core networking technologies creates opportunities
to leverage its engineering investments and develop more integrated products for
simpler, more  innovative  networking solutions  for  customers. 3Com  plans  to
invest in emerging technologies for use in existing and future products, as well
as  to improve and enhance existing  products to extend their lifecycles, reduce
manufacturing costs and increase functionality.  In addition to the  development
of  custom ASICs to improve performance,  increase reliability and reduce costs,
3Com is investing  in the following  areas: Fast Ethernet  (100 Mbps  Ethernet),
wireless  local area  network communications,  ATM capabilities,  LAN switching,
ISDN connectivity, enhanced connectivity in IBM environments, and remote  access
for single and mobile users.

    The  industry  in  which 3Com  competes  is subject  to  rapid technological
developments, evolving industry standards, changes in customer requirements  and
frequent new product introductions and enhancements. As a result, 3Com's success
in  part depends  upon its  ability, on  a cost-effective  and timely  basis, to
continue to  enhance its  existing products  and to  develop and  introduce  new
products  that take advantage  of technological advances.  3Com will continue to
make strategic acquisitions where  appropriate. There can  be no assurance  that
3Com  will be able to successfully develop  new products to address new industry
transmission standards and technological  changes or to  respond to new  product
announcements by others or that such products will achieve market acceptance.

  MARKETS AND CUSTOMERS

    3Com's  customers  are  represented among  the  world's  leading industries,
including  finance,  health  care,  manufacturing,  government,  education,  and
service  organizations. In fiscal  1994, 3Com began  targeting specific vertical
markets, including health  care, education, finance  and government, through  an
expanded  major accounts  sales force. With  the acquisition  of Primary Access,
3Com gained important  presence within  the telco and  network service  provider
markets.

    Around  the  world, 3Com  serves its  customers through  a variety  of sales
channels including  direct  and  indirect channels.  Indirect  channels  include
systems  integrators, value-added resellers,  distributors, national dealers and
resellers, and OEMs. 3Com's multi-channel sales strategy encourages broad market
coverage, by allowing 3Com  sales personnel to create  demand for 3Com  products
while  giving customers the flexibility to  choose the most appropriate delivery
option.

  INTERNATIONAL OPERATIONS

    3Com distinguishes itself from  many of its  competitors with its  dedicated
research and development, manufacturing, sales and service organizations outside
the  United States. 3Com maintains sales  offices in 32 countries, including new
offices opened in fiscal 1995 in India, Korea, Poland and Chile. 3Com  primarily
markets  its products  internationally through  subsidiaries, sales  offices and
relationships with local  distributors in Europe,  Canada, Asia/Pacific Rim  and
Latin America.

  CUSTOMER SERVICE

    Since  global  data  networking  infrastructures  are  becoming increasingly
complex, customers  require  vendors  to  help them  manage  and  support  their
networks  as  well  as  design  and  build  them.  Additionally,  as  customers'
networking purchases transition  from point product  to connectivity systems,  a
more  solutions-oriented  approach  to  service and  support  is  required. 3Com
recognized these  trends early  and has  invested in  a comprehensive  worldwide
service and support organization capable of providing virtually around-the-clock
customer  support regardless of geographic location. 3Com is also developing new
service programs that will expand customers' support options.

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    Worldwide logistics include support and repair centers in the United States,
dedicated service organizations in Europe  and Asia/Pacific Rim, parts stock  at
more  than 25 locations, and electronic bulletin boards throughout the world. In
addition to on-site  training, 3Com  also provides  computer-based courses  that
allow  customers to learn networking technologies at their own pace in their own
environments.

  BACKLOG

    3Com manufactures its products based upon its forecast of the demand of  its
customers worldwide and maintains inventories of finished products in advance of
receiving  firm orders  from its customers.  Orders are generally  placed by the
customer on an as-needed  basis and products are  usually shipped within one  to
four  weeks after receipt of an order.  Such orders generally may be canceled or
rescheduled by the customer without significant penalty. Accordingly, 3Com  does
not  maintain a substantial backlog,  and backlog as of  any particular date may
not be indicative of 3Com's actual sales in any succeeding period.

  MANUFACTURING AND SUPPLIERS

    3Com's primary  production  activities are  conducted  at its  Santa  Clara,
California   and  Blanchardstown,  Ireland  facilities.  Purchasing,  mechanical
assembly, burn-in, testing, final assembly, and quality assurance functions  are
performed  at both of these facilities.  3Com also procures certain products and
subassemblies through subcontractors. Over the past several years, 3Com has been
investing in automating its manufacturing capabilities, decreasing the costs and
increasing the  quality of  both manufacturing  design and  production. To  meet
increased  demand for its  global data networking products,  in both fiscal 1994
and 1995, 3Com added new automated  production lines in both its California  and
Ireland  plants. Additionally, in August 1995,  3Com completed construction of a
new 225,000  square foot  manufacturing facility  at its  headquarters in  Santa
Clara.  The  new  facility,  which  will  initially  produce  the  EtherLink and
TokenLink families  of  network  adapters  and  the  SuperStack  network  system
components, triples the existing manufacturing square footage in Santa Clara.

    3Com  is committed  to being  an environmentally  conscious manufacturer and
pioneered  implementation  of  a  chlorofluorocarbon  ("CFC")-free  semi-aqueous
cleaning  process at its California plant  with DuPont and Corpane Corporations.
The same process is used at the Ireland facility and 3Com met its goal of  being
CFC-free  by the  end of  calendar year 1993.  Components purchased  by 3Com are
generally available from multiple suppliers. However, certain components may  be
available  from sole sources. The inability of 3Com to obtain certain components
could require  3Com  to redesign  or  delay shipments  of  several of  its  data
networking  products.  3Com has  sought  to establish  close  relationships with
sole-source suppliers and/or to build up inventory of such components;  however,
there  can be no assurance  that production would not  be interrupted due to the
unavailability of components. 3Com believes  that its inventory levels of  these
components,  combined  with finished  components held  by 3Com's  suppliers, are
adequate for its presently forecasted needs.

  COMPETITION

    Data networking is an emerging field within the information systems industry
encompassing   both   on-premises    (e.g.,   desktop   connectivity    devices,
internetworking  platforms and  wiring hubs)  and off-premises  (e.g., wide-area
networking)   technologies.   3Com   participates   primarily   in    designing,
manufacturing and marketing on-premises equipment, and is expanding its presence
in  the  off-premises  point-of-presence  market.  3Com's  competitors typically
compete in one or more segments of the on-premises sector of the data networking
market. These companies  are using  their resources and  technical expertise  to
improve  and  expand their  product lines  in  an effort  to gain  market share.
Several are extending their product offerings beyond a single market segment and
are pursuing strategies  more closely resembling  3Com's global data  networking
strategy.  The industry recently has witnessed a wave of merger, acquisition and
strategic partnering activity as many of these companies seek to provide broader
networking solutions.

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    PERSONAL CONNECTIVITY  PRODUCTS.    The  market  for  personal  connectivity
products  is highly  competitive. The  market for  network adapters  and PC Card
adapters  is  characterized  by  intense  competition  with  companies  offering
products  that support a range of Ethernet, Token Ring and FDDI media. Principal
competitors in  the  traditional  adapter  and PC  Card  markets  include  Intel
Corporation,  IBM  Corporation, Madge  N.V.,  Olicom A/S,  Standard Microsystems
Corporation and  Xircom. The  market  for remote  access adapters  is  currently
evolving  and in its early stages in both  the U.S. and Europe. As remote access
becomes increasingly available to individual  users and small businesses,  these
companies  may  combine  to  achieve greater  market  presence,  or  new, larger
competitors, such as traditional modem companies, may enter the market.

    NETWORK SYSTEMS  PRODUCTS.   Competition in  the network  systems  business,
formerly  characterized by niche-based competitors  focused on a single industry
segment, is shifting toward more broad-based suppliers offering multiple product
lines. This has been  achieved through mergers  and acquisitions, through  joint
marketing  agreements, and through internally  developed products. This industry
consolidation, and the convergence of hub, switching and routing technologies on
single platforms, will likely continue,  intensifying competition among a  small
group  of companies with  broad product offerings.  Principal competitors in the
network systems  products  market  include Bay  Networks,  Cabletron  and  Cisco
Systems.

    INTEGRATED  REMOTE  ACCESS SYSTEMS.   Until  very  recently, the  market for
point-of-presence connectivity  equipment  has  been characterized  by  a  large
number  of vendors with many complementary  hardware products. Until recently, a
traditional point-of-presence might include modems, channel banks, and PADs from
a number of different suppliers. Integrated remote access systems, such as  3Com
Primary  Access  Aperture  product,  replace  these  multiple,  single  function
hardware products with  a single software-defined  platform capable of  handling
both  digital and analog  signals. 3Com Primary  Access competes against various
manufacturers of the products mentioned above, as well as Ascend  Communications
and U.S. Robotics who manufacture integrated remote access systems.

    3Com  believes  it  competes  favorably in  the  data  networking  market by
providing  customers  with  a  full   breadth  of  products  based  on   leading
technologies which, when combined under the HPSN framework, address connectivity
needs  for  each of  the  connectivity environments  and  provide cost-effective
migration paths to higher performance technologies. Additionally, 3Com  believes
that  its  products  typically enjoy  a  reputation  for both  high  quality and
reliability.

  PATENTS, LICENSES AND RELATED MATTERS

    3Com relies  on U.S.  and foreign  patents, copyright,  trademark and  trade
secrets  to  establish and  maintain proprietary  rights  in its  technology and
products. 3Com has an active program to file applications for and obtain patents
in the United States and in selected foreign countries where a potential  market
for  3Coms  products  exists. 3Com's  general  policy  has been  to  seek patent
protection for those inventions  and improvements likely  to be incorporated  in
its  products or  otherwise expected  to be  of value.  3Com has  been issued 28
utility patents and six  design patents in  the U.S., and  has been issued  four
foreign patents. Other patent applications are currently pending which relate to
3Com's research and development.

    There can be no assurance that any of these patents would be upheld as valid
if  litigated. While 3Com believes that its patents and applications have value,
it also  believes  that  its  competitive  position  depends  primarily  on  the
innovative  skills,  technological  expertise and  management  abilities  of its
employees.

    3Com has been granted licenses by others, including a fully paid, perpetual,
non-exclusive license  to a  patent held  by  Xerox covering  a portion  of  the
Ethernet technology.

    3Com has registered 48 trademarks in the United States and has registered 20
trademarks  in one  or more of  39 foreign countries.  Numerous applications for
registration of domestic and foreign trademarks are currently pending.

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    Many  of  3Com's  products  are  designed  to  include  software  or   other
intellectual  property  licensed  from  third parties.  3Com  actively  seeks to
license software that promotes the  compatibility of its products with  industry
standards, including standard protocols and architectures. The loss of rights in
software or other intellectual property licensed from a third party and designed
into  a particular  product might disrupt  or delay 3Com's  distribution of that
product. While it  may be  necessary in  the future  to seek  or renew  licenses
relating to various aspects of its products, 3Com believes that, based upon past
experience  and  standard industry  practice, such  licenses generally  could be
obtained on commercially reasonable terms.

  EMPLOYEES

    As of July 31, 1995,  3Com had 3,366 full-time  employees, of whom 803  were
employed  in engineering, 1,205 in sales, marketing and customer service, 945 in
manufacturing, and 413 in finance  and administration. None of 3Com's  employees
is represented by a labor organization and 3Com considers its employee relations
to be excellent.

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS

  ACQUISITIONS

    During  the fiscal year ended May 31, 1995, 3Com enhanced its HPSN solutions
with several strategic acquisitions. 3Com completed the acquisition of Sonix,  a
provider  of ISDN connectivity solutions in the  United Kingdom, on May 1, 1995.
3Com issued approximately 2.4  million shares of 3Com  Common Stock in  exchange
for  all the outstanding stock of Sonix.  The acquisition was accounted for as a
pooling of interests and  all financial data  of 3Com for  fiscal 1995 has  been
restated to include the operating results of Sonix. As the historical operations
of Sonix were not significant to any year presented, 3Com's financial statements
for  prior years  have not  been restated  and the  financial effect  of Sonix's
prior-year results have  been accounted  for as  a $2.1  million charge  against
retained earnings in fiscal 1995.

    On  October  18, 1994,  3Com acquired  substantially all  of the  assets and
assumed substantially  all  the liabilities  of  NiceCom, an  innovator  of  ATM
technology.  3Com also acquired a  company developing network adapter technology
on October  14, 1994.  The acquisitions  were accounted  for as  purchases  and,
accordingly,  the  acquired  assets  and  liabilities  were  recorded  at  their
estimated fair market values at the dates of acquisition. The aggregate purchase
price of approximately $55.5  million was paid using  funds from 3Com's  working
capital  and issuance of  Common Stock. In addition,  3Com assumed stock options
with an associated  value of  $6.1 million and  incurred $2.0  million of  costs
directly attributable to the completion of the acquisitions. Approximately $60.8
million  of the total  purchase price represented  in-process technology and was
charged to 3Com's operations  during the second fiscal  quarter of 1995.  3Com's
consolidated  results  of operations  for  the fiscal  year  ended May  31, 1995
include the operating  results of  the acquired  companies from  their dates  of
acquisition.

    Subsequent  to the end  of fiscal 1995, 3Com  consummated the acquisition of
Primary Access, a  provider of  integrated network  access systems,  on June  9,
1995.  3Com  issued approximately  4.6 million  shares of  3Com Common  Stock in
exchange for all the outstanding stock of Primary Access. 3Com also assumed  and
exchanged  all options and warrants to purchase Primary Access stock for options
and warrants  to purchase  approximately  1.0 million  shares of  3Com's  Common
Stock.  The  acquisition  was  accounted  for as  a  pooling  of  interests. All
financial data of 3Com for the periods prior to the acquisition were restated to
include the historical financial data of Primary Access.

    In fiscal 1994, 3Com acquired Synernetics, a market leader in LAN  switching
products  and Centrum, an innovator of remote access products. Both acquisitions
were accounted for as purchases. 3Com  also entered into a technology  licensing
agreement  with Pacific Monolithics, a developer of wireless communications. See
Note 12 of Notes to Supplemental Consolidated Financial Statements. Fiscal  1994
results  included a $134.5 million pre-tax charge to operations for the combined
effect of purchased in-process  technology related to  the acquisitions and  the
license agreement.

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    In fiscal 1993, 3Com acquired Star-Tek, a company specializing in Token Ring
technology. The transaction was accounted for as a pooling of interests.

    See  Note 3 of  Notes to Supplemental  Consolidated Financial Statements for
additional information on the above business combinations.

  RESULTS OF OPERATIONS

    Fiscal 1995  sales increased  56  percent to  $1,325.7 million  from  $851.0
million  in fiscal  1994. This  compares to  a 35  percent increase  in sales in
fiscal 1994 from fiscal 1993 sales of $631.0 million.

    3Com believes  that the  increase in  fiscal 1995  sales is  due to  several
factors,  including strong market  acceptance of 3Com's  new products, continued
strength in the data  networking market, increases  in personal computer  sales,
rapid  growth in sales outside the U.S., the breadth of 3Com's product offerings
and its  ability to  deliver complete  data networking  solutions for  different
connectivity  environments. Sales from products introduced in the last 12 months
represented 51  percent of  total sales  in  fiscal 1995,  an increase  from  31
percent and 47 percent of total sales in fiscal 1994 and 1993, respectively.

    Sales  of network  adapters in fiscal  1995 represented 52  percent of total
sales and  increased 45  percent from  fiscal  1994 sales.  This followed  a  31
percent  sales increase  in network  adapters in  fiscal 1994  from fiscal 1993.
Sales of network adapters in fiscal  years 1994 and 1993 represented 55  percent
and  57 percent  of total sales,  respectively. The increase  in network adapter
sales represented an increase in unit volume partially offset by continuation of
the industry-wide trend toward  decreasing average selling prices,  particularly
in  the Token Ring market.  The increase in unit  volume primarily resulted from
sales of the EtherLink III network  adapter, but was also favorably impacted  by
sales of the PC Card adapter.

    Sales  of network systems products  (i.e., internetworking platforms, remote
access servers,  hubs and  switching  products) in  fiscal 1995  represented  44
percent  of total sales and increased 77 percent from fiscal 1994. This followed
a 51 percent increase in systems sales in fiscal 1994 from fiscal 1993. Sales of
systems products in  fiscal years 1994  and 1993 represented  39 percent and  35
percent  of total  sales, respectively.  The increase  was led  primarily by the
LinkBuilder FMS II  stackable hub, a  component of 3Com's  SuperStack family  of
network  systems products,  the LANplex  family of  switching products,  and the
NETBuilder Remote Office  internetworking system. Similar  to network  adapters,
the  increase in systems products sales  represented an increase in unit volume,
which was  partially  offset by  a  decrease  in average  selling  prices.  3Com
believes  there is an  industry-wide trend towards  demand for fully functional,
fault-tolerant, lower-priced  network systems  in a  stackable format.  3Com  is
currently  delivering hubs, remote office routers,  LAN switching products and a
redundant power  system in  a stackable  format, which  can be  used in  various
combinations within 3Com's SuperStack network system.

    Sales of other products (i.e., terminal servers, customer service, protocols
and  other products)  represented four  percent of  total sales  in fiscal 1995.
Sales of other  products increased 14  percent from fiscal  1994, although  they
continued  to  represent  a  decreasing percentage  of  3Com's  total  sales, as
expected.

    Sales outside of the  United States comprised 53  percent of total sales  in
fiscal  1995, compared  to 50 percent  in fiscal  1994 and 49  percent in fiscal
1993. International sales increased in all geographic regions, especially in the
Asia Pacific  and  Latin American  regions.  3Com believes  that  this  increase
reflected  its  continued  global expansion  through  the opening  of  new sales
offices in  Latin America,  Asia  and Europe,  and  the expansion  of  worldwide
service  and support programs.  The Company's operations  were not significantly
impacted by  fluctuations in  foreign currency  exchange rates  in fiscal  years
1995, 1994 and 1993.

    Cost  of sales  as a percentage  of sales  was 46.4 percent  in fiscal 1995,
compared to 48.9 percent in fiscal 1994 and 51.8 percent in fiscal 1993. The 2.5
percentage point improvement in gross margin in

                                       56
<PAGE>
fiscal 1995 resulted primarily from a favorable shipment mix of 3Com's  products
and  reductions in  product material costs  which improved gross  margins by 2.1
percentage points. Lower inventory obsolescence costs improved gross margins  by
an  additional .5  percentage points.  The 2.9  percentage point  improvement in
gross margin  in fiscal  1994  resulted primarily  from improved  efficiency  of
manufacturing  operations  and  higher  volume  shipments  which  improved gross
margins by 1.7 percentage  points. A favorable shipment  mix of 3Com's  products
and reductions in product material costs improved gross margins by .6 percentage
points  and lower  freight and  duties, which resulted  from an  increase in the
volume of products manufactured in the Ireland plant, improved gross margins  by
 .5 percentage points.

    Total  operating expenses  in fiscal 1995  were $513.9  million, compared to
$431.6 million in fiscal 1994 and  $243.8 million in fiscal 1993. Excluding  the
charge   of  $60.8   million  for   purchased  in-process   technology  and  the
non-recurring charge  of $5.0  million, which  consisted of  approximately  $6.1
million  in merger costs  associated with the acquisitions  of Sonix and Primary
Access and a credit of $1.1 million for the reduction in accrued costs  relating
to  the fiscal 1991 restructuring, total operating expenses in fiscal 1995 would
have been $448.1  million, or  33.8 percent of  sales. Excluding  the charge  of
$134.5   million  for   purchased  in-process  technology   resulting  from  the
acquisitions of Synernetics and Centrum  and the technology licensing  agreement
with  Pacific Monolithics,  total operating expenses  in fiscal  1994 would have
been $297.2  million, or  34.9  percent of  sales. Excluding  the  non-recurring
charge  of  $1.3 million  (see  Note 13  of  Notes to  Supplemental Consolidated
Financial Statements), total operating expenses  in fiscal 1993 would have  been
$242.5 million, or 38.4 percent of sales.

  SUMMARY OF OPERATING EXPENSES

<TABLE>
<CAPTION>
                                                 FISCAL      PERCENT OF     FISCAL      PERCENT OF     FISCAL      PERCENT OF
(DOLLARS IN THOUSANDS)                            1995         SALES         1994         SALES         1993         SALES
                                               -----------  ------------  -----------  ------------  -----------  ------------
<S>                                            <C>          <C>           <C>          <C>           <C>          <C>
Sales and marketing..........................  $   259,458        19.6%   $   175,972        20.7%   $   139,066        22.0%
Research and development.....................      133,687        10.1         79,327         9.3         66,995        10.6
General and administrative...................       54,982         4.1         41,865         4.9         36,391         5.8
Non-recurring charges:
  Purchased in-process technology............       60,796         4.6        134,481        15.8             --          --
  Non-recurring items........................        5,000         0.4             --          --          1,316         0.2
                                               -----------         ---    -----------         ---    -----------         ---
    Total operating expenses.................  $   513,923        38.8%   $   431,645        50.7%   $   243,768        38.6%
                                               -----------         ---    -----------         ---    -----------         ---
                                               -----------         ---    -----------         ---    -----------         ---
    Total operating expenses excluding
     non-recurring charges...................  $   448,127        33.8%   $   297,164        34.9%   $   242,452        38.4%
                                               -----------         ---    -----------         ---    -----------         ---
                                               -----------         ---    -----------         ---    -----------         ---
</TABLE>

    Sales  and marketing expenses  in fiscal 1995 increased  $83.5 million or 47
percent from fiscal 1994. As a percentage of sales, sales and marketing expenses
decreased to 19.6 percent in fiscal 1995, from 20.7 percent in fiscal 1994.  The
increase  in such expenses  reflected increased selling costs  related to the 56
percent increase in sales volume, the cost of promoting 3Com's new and  existing
products,  and a year-over-year increase in  sales and marketing personnel of 35
percent.

    Research and development expenses in fiscal 1995 increased $54.4 million  or
69  percent from fiscal 1994. As a  percentage of sales, such expenses increased
to 10.1 percent  in fiscal 1995,  compared to  9.3 percent in  fiscal 1994.  The
increase  in research and development expenses was primarily attributable to the
cost of developing 3Com's new products  including a 42 percent increase in  full
time  research and development personnel from  the prior year. 3Com believes the
introduction of new technologies and products  to the market in a timely  manner
is  crucial to  its success,  and will  continue to  make strategic acquisitions
where appropriate. Several of the research and development projects acquired  in
connection  with  3Com's strategic  acquisitions since  December 1993  have been
completed. Of  the projects  that  are still  in  process, development  work  is
proceeding  as  expected.  Such development  activities  primarily  included the
development of ATM-based products for  the enterprise market and products  based
on  ISDN technology for the small office/home office environments. The nature of

                                       57
<PAGE>
costs for such  development activities is  primarily employee-related costs  for
design,  prototype development and testing. 3Com  estimates that an aggregate of
approximately $13 to $18 million will be  expensed over the next four to  twelve
months  in connection with  completion of all  acquired research and development
projects. 3Com anticipates future  research and development spending,  including
costs  remaining for the completion of these purchased in-process projects, will
not significantly differ from the  historical trend of research and  development
expenses as a percent of sales.

    General  and administrative expenses in  fiscal 1995 increased $13.1 million
or 31  percent  from  fiscal 1994.  As  a  percentage of  sales,  such  expenses
decreased  to 4.1 percent in  fiscal 1995, from 4.9  percent in fiscal 1994. The
increase in general  and administrative  expenses reflects  expansion of  3Com's
infrastructure  through internal growth and acquisitions  and an increase in the
provision for bad debt expense associated with the higher sales volume.

    The increase in operating  expenses in fiscal 1994  compared to fiscal  1993
reflected  increased selling  costs associated  with higher  sales, the  cost of
developing  and  promoting  3Com's   systems  products,  increased   cooperative
advertising  expenses,  and growth  in the  number of  employees to  support the
higher  volume  of  business.   Research  and  development  expenses   increased
consistent  with  3Com's  continued  commitment to  develop  and  introduce high
quality, innovative products.

    Non-operating income  was favorably  impacted during  fiscal 1994,  as  3Com
realized  a  non-recurring  gain  of  $17.7  million  from  the  sale  of 3Com's
investment in Madge N.V.

    Other income (net) was $3.4 million in fiscal 1995, compared to $3.3 million
in fiscal 1994 and $1.2 million in fiscal 1993. These amounts consist  primarily
of  interest income, which increased  $6.2 million in fiscal  1995 due to larger
cash and investment balances  and higher interest rates,  and was offset by  the
increase  in interest expense associated with  the $110.0 million of convertible
subordinated notes issued in the second quarter of fiscal 1995. The increase  in
fiscal  1994 from  fiscal 1993  resulted primarily  from more  favorable foreign
exchange results of $1.3 million and higher interest income of $.4 million.

    3Com's effective income tax  rate was 37 percent  in fiscal 1995.  Excluding
the  merger costs  associated with  the Sonix  and Primary  Access acquisitions,
which were  not  tax deductible,  the  effective tax  rate  would have  been  36
percent.  In fiscal 1994, 3Com provided $48.7 million for income taxes on income
before income  taxes of  $24.5  million because  a  significant portion  of  the
purchased  in-process technology charges  were not tax  deductible. In addition,
the income tax rate in fiscal 1994 reflected the recognition of a net benefit of
$1.2  million  which   resulted  from   retroactive  changes   to  the   Revenue
Reconciliation  Act of 1993. Excluding the  effect of the non-recurring items in
fiscal 1994, the effective tax rate would have been 35 percent. 3Com's effective
tax rate in fiscal 1993 was 35 percent.

    Net income for fiscal 1995 was $126.0 million, or $0.83 per share,  compared
to  a net loss  of $24.2 million,  or $0.19 per  share, for fiscal  1994 and net
income for fiscal  1993 of $39.7  million, or  $0.30 per share.  Net income  for
fiscal  1995 included  the aforementioned  $60.8 million  charge associated with
purchased in-process technology, the  $6.1 million charge  for merger costs  and
the  $1.1  million  credit  for  the  reduction  in  the  restructuring reserve.
Excluding these one-time charges and gains, 3Com would have realized net  income
of  $168.8 million or $1.11 per share for fiscal 1995. Excluding the charges for
purchased in-process technology, the gain from the sale of an investment and the
tax benefit, net income for fiscal 1994 would have been $91.4 million, or  $0.65
per  share. Excluding  the effect  of non-recurring  items in  fiscal 1993, 3Com
would have realized net  income of $40.9  million, or $0.31  per share. All  per
share  amounts have  been restated  to reflect  the two-for-one  stock splits on
August 25, 1995 and September 1, 1994.

  LIQUIDITY AND CAPITAL RESOURCES

    Cash, cash equivalents and temporary cash  investments at May 31, 1995  were
$333.5  million, increasing  $200.3 million  from May  31, 1994.  At the  end of
fiscal 1994 and 1993, cash, cash equivalents and temporary cash investments were
$133.2 million and $119.6 million, respectively.

                                       58
<PAGE>
    For the fiscal year  ended May 31, 1995,  net cash generated from  operating
activities was $228.8 million. Trade receivables at May 31, 1995 increased $75.1
million  from May  31, 1994 due  primarily to  an increase in  sales. Days sales
outstanding in receivables was 46 days at the end of fiscal 1995, compared to 45
days at May 31, 1994. Inventory levels  at May 31, 1995 increased $50.7  million
from the prior fiscal year-end, with inventory turnover improving from 6.5 turns
at May 31, 1994 to 6.6 turns at May 31, 1995.

    During  the  fiscal year  ended May  31,  1995, 3Com  made $77.8  million in
capital expenditures. Major capital expenditures included upgrades and additions
to product  manufacturing  lines and  facilities  in Santa  Clara  and  Ireland,
development  of a new worldwide accounting  and information system, and upgrades
of desktop systems. As of May  31, 1995, 3Com had outstanding approximately  $29
million  in  capital  expenditure  commitments  primarily  associated  with  the
expansion and upgrade of product manufacturing lines and facilities. 3Com  spent
approximately $65.8 million in net cash for acquisitions during fiscal 1995 (see
Note  3  of  Notes  to Supplemental  Consolidated  Financial  Statements), which
included the final payment of $14.3 million to Centrum shareholders in the first
quarter of fiscal 1995 for the acquisition of Centrum in fiscal 1994. Cash  paid
for acquisitions in fiscal 1995 were funded through existing cash balances.

    In  the second quarter of fiscal 1995,  3Com received net proceeds of $107.3
million from the issuance of convertible subordinated notes (see Note 8 of Notes
to Supplemental  Consolidated Financial  Statements). During  fiscal 1995,  3Com
repurchased 1.6 million shares of Common Stock with a total cash outlay of $19.6
million.  As of May 31,  1995, 3Com was authorized by  its Board of Directors to
repurchase up to an  additional 5.5 million  shares of its  Common Stock in  the
open  market. 3Com received  cash of $28.1  million from the  sale of its Common
Stock to employees through its employee stock purchase and option plans.

    During the first quarter of fiscal  1995, 3Com signed a five-year lease  for
225,000  square  feet of  office and  manufacturing  space to  be built  on land
adjacent to its existing headquarters in Santa Clara. This arrangement  provides
3Com  with an option to purchase the related property during the lease term, and
at the end of the lease term  3Com is obligated to either purchase the  property
or  arrange for  the sale  of the property  to a  third party  with a guaranteed
residual value  of up  to $33.5  million to  the seller  of the  property.  3Com
commenced  occupancy of portions of the facility  in June 1995, with payments on
the lease estimated to start in September 1995.

    3Com has  a  $40  million  revolving bank  credit  agreement  which  expires
December  31, 1996. No amount is outstanding under the credit agreement and 3Com
is in compliance with all financial ratio and minimum net worth requirements.

    Based on  current plans  and  business conditions,  3Com believes  that  its
existing  cash and equivalents, temporary  cash investments, cash generated from
operations and the available  revolving credit agreement  will be sufficient  to
satisfy anticipated operating cash requirements through fiscal 1996.

                                       59
<PAGE>
MANAGEMENT

    The  directors and executive officers of 3Com  and their ages as of July 31,
1995 are as follows:

<TABLE>
<CAPTION>
           NAME                  AGE                              POSITION
---------------------------      ---      ---------------------------------------------------------
<S>                          <C>          <C>
Eric A. Benhamou                     39   Chairman, President and Chief Executive Officer
Debra J. Engel                       43   Vice President, Corporate Services
Robert J. Finocchio, Jr.             44   Executive Vice President and General Manager, Network
                                           Systems Operations
John H. Hart                         49   Vice President and Chief Technical Officer
Richard W. Joyce                     39   Vice President, New Business Operations
Alan J. Kessler                      37   Vice President, Customer Service Operations
William G. Marr                      48   Executive Vice President, Worldwide Sales
Christopher B. Paisley               42   Vice President, Finance and Chief Financial Officer
Janice M. Roberts                    39   Vice President, Marketing
Douglas C. Spreng                    51   Vice President and General Manager, Network Adapter
                                           Division
James L. Barksdale                   52   Director
Gordon A. Campbell                   51   Director
David W. Dorman                      41   Director
Jean-Louis Gassee                    51   Director
Stephen C. Johnson                   53   Director
Philip C. Kantz                      51   Director
William F. Zuendt                    48   Director
</TABLE>

    Eric A. Benhamou has been 3Com's President and Chief Executive Officer since
April 1990 and September 1990, respectively. Mr. Benhamou became Chairman of the
Board of Directors of  3Com in July  1994. Mr. Benhamou  served as 3Com's  Chief
Operating  Officer from  April 1990  through September  1990. From  October 1987
through April  1990,  Mr. Benhamou  held  various general  management  positions
within  3Com. Prior  to that,  Mr. Benhamou  was one  of the  founders of Bridge
Communications, Inc., in September 1981, and held various executive positions in
that company in the field of engineering and product development, most  recently
as  Vice  President  of Engineering,  until  that  company merged  with  3Com in
September 1987. Mr. Benhamou serves as a Director of Cypress Semiconductor, Inc.
and Legato Systems, Inc. Mr. Benhamou is also a member of the Board of Directors
of Smart Valley, Inc.

    Debra J.  Engel has  been 3Com's  Vice President,  Corporate Services  since
March  1990. From the  time Ms. Engel  joined 3Com in  November 1983 until March
1990, she was  3Com's Vice President,  Human Resources. Prior  to that, she  was
with  Hewlett-Packard  Company  for  seven  years,  most  recently  as Corporate
Staffing Manager at Hewlett-Packard's Corporate Headquarters.

    Robert J. Finocchio, Jr. has  been 3Com's Executive Vice President,  Network
Systems  Operations since  June 1993.  From January  1990 through  May 1993, Mr.
Finocchio served  as  3Com's Executive  Vice  President, Field  Operations.  Mr.
Finocchio joined 3Com in December 1988 as Vice President of Sales, Marketing and
Services,  a position he held  through January 1990. Prior  to joining 3Com, Mr.
Finocchio was with Rolm,  Inc. for nine years,  where he held various  executive
positions  in sales  and service.  Most recently he  was Vice  President of Rolm
Systems Marketing.

                                       60
<PAGE>
    John H. Hart  has been  3Com's Vice  President and  Chief Technical  Officer
since joining 3Com in September 1990. Prior to joining 3Com, Mr. Hart worked for
Vitalink  Communications  Corporation for  seven  years, where  he  held various
executive positions in  product engineering  and development.  Mr. Hart's  final
position with Vitalink was Vice President of Network Products.

    Richard  W. Joyce became  3Com's Vice President,  New Business Operations in
June 1995.  From  June 1993  to  June 1995,  Mr.  Joyce served  as  3Com's  Vice
President,  Sales Europe and  Asia/Pacific Rim (APR). From  January 1990 to June
1995, Mr. Joyce served as President, 3Com Europe Limited. Mr. Joyce joined  3Com
in November 1987 as Sales Manager of 3Com (UK) Limited, a position he held until
September  1988. From  September 1988  until January  1990, Mr.  Joyce served as
Managing Director of 3Com (UK) Limited. Most recently prior to joining 3Com, Mr.
Joyce held  the position  of Managing  Director Europe  for State  Street  Trade
Development Corporation from 1985 to 1987.

    Alan J. Kessler became 3Com's Vice-President, Customer Service Operations in
June  1995. From June 1993 through June  1995, Mr. Kessler served as 3Com's Vice
President, Systems Sales-North  Americas. From  May 1991 through  May 1993,  Mr.
Kessler  served as  3Com's Vice President  and General  Manager, Network Systems
Division. From April  1990 until  May 1991, Mr.  Kessler served  as 3Com's  Vice
President  and  General Manager,  Distributed  Systems Division.  Previously, he
served as 3Com's Product Marketing  Manager of the Distributed Systems  Division
from  November 1988 through April  1990 and as 3Com's  Product Line Manager from
October 1985 through November 1988.

    William G. Marr joined 3Com as Executive Vice President, Worldwide Sales  in
June  1995. Prior to joining 3Com, Mr.  Marr was with Sun Microsystems, Inc. for
ten years, most recently as Vice President, North American and Australian  Field
Operations.

    Christopher  B. Paisley  has served  as 3Com's  Vice President,  Finance and
Chief Financial Officer since September 1985. Prior to joining 3Com, Mr. Paisley
was Vice President, Finance of Ridge Computers from May 1982 to September  1985.
Previously,  Mr. Paisley was employed by  Hewlett-Packard Company for five years
in a variety of accounting and finance positions.

    Janice M. Roberts has been 3Com's Vice President, Marketing since June 1992.
From February  1994 to  June 1995,  Ms. Roberts  also served  as 3Com's  General
Manager,  Personal  Office Division.  From February  1992  until June  1992, Ms.
Roberts  was  3Com's  Vice  President  and  General  Manager  of  the   Premises
Distribution  Division. During  the period  January 1989  to February  1992, Ms.
Roberts served as Director  of BICC Technologies Limited  and President of  BICC
Technologies,  Inc.  and BICC  Communications, Inc.  She  was also  Chairman and
Managing Director  of BICC  Data Networks  Limited. From  December 1986  through
January  1989, Ms. Roberts was Manager of  Sales and Marketing of STC Components
Ltd. located in Harlowe, United Kingdom.

    Douglas C. Spreng  has been  Vice President  and General  Manager of  3Com's
Network Adapter Division since March 1992. Prior to joining 3Com, Mr. Spreng was
President and Chief Operations Officer of Domestic Automation Company, a private
communications   system  start-up  company  based  in  San  Carlos,  California.
Previously, Mr. Spreng  spent 23 years  with Hewlett-Packard Company  (HP) in  a
variety  of  key  marketing,  manufacturing  and  general  management positions,
including General Manager  of HP's  Commercial Systems Group.  Most recently  he
served as General Manager of HP's Manufacturing Applications Group.

    Mr.  Barksdale has been a  director of 3Com since  1987. Since January 1995,
Mr.  Barksdale  has  been  the  President,  CEO  and  a  director  of   Netscape
Communications  Corporation. Previously,  Mr. Barksdale  had been  President and
Chief Executive Officer of AT&T Wireless Services since September 1994. Prior to
September 1994,  Mr. Barksdale  had been  employed as  the President  and  Chief
Operating  Officer of McCaw Cellular Communications, Inc. since January 1992 and
by Federal Express Corporation since 1979. Mr. Barksdale served as a director of
Bridge Communications, Inc.  from April  1986 until that  company combined  with
3Com  in 1987. Mr. Barksdale also serves  as a director of The Promus Companies,
Inc.

                                       61
<PAGE>
    Mr. Campbell has  been a director  of 3Com  since 1990. Mr.  Campbell was  a
founder and since 1993 has been President and Chairman of the Board of Techfarm,
Inc.,  a  company  formed to  launch  technology based  start-up  companies. Mr.
Campbell was a founder of Chips and Technologies, Inc. ("Chips"), a company that
designs and distributes very  large scale integrated  circuit products, and  has
served  as a director of Chips since December  1984 and as Chairman of the Board
of Chips  since  1993. Mr.  Campbell  also served  as  the President  and  Chief
Executive Officer of Chips from January 1985 to July 1993. Mr. Campbell was also
a  founder of Seeq Technology, Inc., and,  from January 1981 to October 1984, he
served as that  company's President  and Chief Executive  Officer. Mr.  Campbell
also  serves as  a director of  Bell Microproducts, Inc.,  Reply Corporation and
Scotts Valley Instruments,  Inc. and  as Chairman  of the  Board of  Exponential
Technology,  Inc.,  Summit Systems,  3D/fx  Interactive Inc.  and  Absolute Time
Corporation.

    Mr. Dorman has  been a director  of 3Com  since 1995. Since  July 1994,  Mr.
Dorman   has  been  President  and  Chief  Executive  Officer  of  Pacific  Bell
Corporation. Prior to that, he was associated with US Sprint Corporation for  13
years,  during which time he held several management positions, most recently as
President of Sprint Business Services from 1993 to 1994.

    Mr. Gassee  has been  a  director of  3Com since  1993.  Mr. Gassee  is  the
Chairman of the Board and Chief Executive Officer of Be Incorporated, a personal
computing  technology  company in  the development  stage,  which he  founded in
October 1990.  Previously, Mr.  Gassee held  several management  positions  with
Apple  Computer, Inc. ("Apple") for 10 years,  most recently as the President of
Apple Products,  the  research and  development  and manufacturing  division  of
Apple.  Prior to joining Apple, Mr. Gassee  was President and General Manager of
the French subsidiary  of Exxon  Corp., held several  management positions  with
Data  General Corporation, and  spent six years  at Hewlett-Packard Company. Mr.
Gassee is currently also a  member of the board  of directors of Cray  Computer,
Electronics For Imaging, Inc. and LaserMaster Technologies, Inc.

    Mr.  Johnson has been a director of 3Com since 1989. Since 1983, Mr. Johnson
was a  founder and  has been  President and  Chief Executive  Officer of  Komag,
Incorporated,  a manufacturer of Winchester disk  media. Mr. Johnson served as a
director of 3Com  from June 1982  to September  1987; he stepped  down from  the
Board  when 3Com combined  with Bridge Communications, Inc.  and returned to the
Board in 1989. Mr. Johnson also serves as a director of Komag, Incorporated  and
Uniphase Corporation.

    Mr.  Kantz has been a director of  3Com since 1991. Since February 1995, Mr.
Kantz  has  served  President  and  Chief  Executive  Officer  of  The   Sandros
Enterprise,   a  privately   held  business  and   management  consulting  firm.
Previously, he  was  President,  Chief  Executive  Officer  and  a  director  of
Transcisco  Industries, Inc., an industrial services company, from February 1994
to January 1995. From October 1992  through September 1993, Mr. Kantz served  as
President  and  Chief  Executive  Officer  of  Genetrix,  Inc.,  a biotechnology
services company. Mr. Kantz  was President and Chief  Executive Officer of  Itel
Containers  International Corporation  from 1988  through 1991.  Previously, Mr.
Kantz was President  of Transportation  and Industrial  Funding Corporation  and
Senior  Vice President and General  Manager of GE Capital  from 1986 to 1988. In
1988, Mr.  Kantz instigated  the  start up  of  an integrated  waste  management
corporation,  Mine Reclamation Corporation, and  currently serves as Chairman of
that company's board of directors. Mr. Kantz  also serves as a director of  Blue
Cross  of California, Falcon  Building Products, Inc.,  Genetrix, Inc. and Trans
Ocean Ltd.

    Mr. Zuendt has been a director of 3Com since 1988. Mr. Zuendt is a  director
and  President of Wells  Fargo & Company,  a bank holding  company, and of Wells
Fargo Bank. He  joined Wells Fargo  in 1973. Mr.  Zuendt is also  a director  of
MasterCard International and a trustee of Golden Gate University.

                                       62
<PAGE>
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

    The  following table  sets forth certain  information, as of  July 31, 1995,
with respect to  the beneficial  ownership of 3Com's  Common Stock  by (i)  each
director  of 3Com,  (ii) the  Chief Executive  Officer and  the four  other most
highly compensated  executive officers  of 3Com  whose salary  and bonus  exceed
$100,000  during the  fiscal year  ended May 31,  1995, and  (iii) all executive
officers and directors of 3Com as a group.

<TABLE>
<CAPTION>
                                            AMOUNT AND NATURE OF
                                                 BENEFICIAL          PERCENT OF COMMON
                  NAME                          OWNERSHIP(1)         STOCK OUTSTANDING
-----------------------------------------  ----------------------  ---------------------
<S>                                        <C>                     <C>
James L. Barksdale                                   120,000                    *
Gordon A. Campbell                                    64,000                    *
David W. Dorman                                       40,000                    *
Jean-Louis Gassee                                     60,000                    *
Stephen C. Johnson                                   224,000                    *
Philip C. Kantz                                      123,004                    *
William F. Zuendt                                    332,000                    *
Eric A. Benhamou                                   1,398,570                    *
Robert J. Finocchio, Jr.                             417,552                    *
Douglas C. Spreng                                    321,270                    *
Ralph B. Godfrey                                      73,400                    *
Alan J. Kessler                                      166,920                    *
All directors and executive officers as a          4,459,488                  3.0%
 group (17 persons)
<FN>
------------------------
*    Less than 1%.
(1)  To 3Com's knowledge, except  as indicated in the  footnotes to this  table,
     the  persons named in the table have  sole voting and investment power with
     respect to all shares of Common Stock shown as beneficially owned by  them,
     subject to community property laws where applicable.
     Includes  shares  of  3Com's  Common  Stock  issuable  pursuant  to options
     exercisable within 60 days of July  31, 1995, including options to  acquire
     120,000  shares of  3Com's Common Stock  held by Mr.  Barksdale, options to
     acquire 64,000  shares held  by  Mr. Campbell,  options to  acquire  40,000
     shares  held by Mr.  Dorman, options to  acquire 60,000 shares  held by Mr.
     Gassee, options to acquire 168,000 shares  held by Mr. Johnson, options  to
     acquire 103,948 shares held by Mr. Kantz, options to acquire 188,000 shares
     held by Mr. Zuendt, options to acquire 979,584 shares held by Mr. Benhamou,
     options to acquire 354,522 shares held by Mr. Finocchio, options to acquire
     308,680 shares held by Mr. Spreng, options to acquire 48,232 shares held by
     Mr.  Godfrey, options  to acquire 166,920  shares held by  Mr. Kessler, and
     options to acquire an aggregate of 3,631,792 shares of 3Com's Common  Stock
     held by directors and executive officers of 3Com as a group.
</TABLE>

    The  following table  sets forth certain  information, as of  July 31, 1995,
with respect to the beneficial ownership  of 3Com's Common Stock by all  persons
known  by 3Com to  be the beneficial owners  of more than  5% of the outstanding
Common Stock of 3Com.

<TABLE>
<CAPTION>
                                        AMOUNT AND NATURE OF
                                        BENEFICIAL OWNERSHIP    PERCENT OF COMMON
          NAME AND ADDRESS                      (1)             STOCK OUTSTANDING
-------------------------------------  ----------------------  -------------------
<S>                                    <C>                     <C>
FMR Corporation                                19,583,380               13.5%
 82 Devonshire Street
 Boston, MA 02109
Investors Research Corporation                 13,200,000                9.1
 4500 Main Street
 Kansas City, MO 64111
<FN>
------------------------
(1)  To 3Com's knowledge, the entities named  in the table have sole voting  and
     investment  power  with respect  to  all shares  of  Common Stock  shown as
     beneficially owned by  them. This  information is  based upon  a review  of
     Schedule 13G filings made with the Commission during 1995 to date.
</TABLE>

                                       63
<PAGE>
                         INFORMATION CONCERNING CHIPCOM

BUSINESS

    Chipcom   designs,   manufactures   and   distributes   computer  networking
intelligent switching systems,  including hubs and  internetworking and  network
management products. Chipcom's products are designed to allow users to build and
manage  networks  with  dissimilar  personal  computers,  workstations,  cabling
systems and  communications protocols  within an  entire building  or campus  or
across  remote  locations  of an  enterprise.  As entire  organizations  move to
network (client/server) computing, features such as reliability, flexibility and
manageability are  critical  to the  enterprise  network. The  selection  of  an
enterprise-wide  network solution is  a strategic decision  typically made by an
organization's senior management.  Chipcom is using  its technology and  product
strategy in support of the evolution to enterprise networks.

    The  ONline  System  Concentrator and  related  products,  Chipcom's initial
intelligent switching system, was first introduced in 1990. During 1994, Chipcom
expanded its offerings of intelligent switching systems and related products  to
include   the  ONcore  Switching  System  and  the  InfiNET  Switching  Solution
packet-switching products.  In  early  1995,  Chipcom  introduced  the  ONsemble
StackSystem.   These   products  provide   integrated  solutions   for  building
intelligent networks  across enterprises,  from remote  offices to  the  central
office.

    In  February 1994, Chipcom  merged with Artel.  Artel designed and developed
the Galactica Network Switching Hub and  the StarBridge Turbo Switch, both  part
of  Chipcom's InfiNET family of packet  switching hubs. In August, 1994, Chipcom
acquired DSI which  develops, manufactures  and sells  stackable Ethernet  hubs,
which  are  part  of Chipcom's  ONsemble  StackSystem, and  low-end  modular hub
products.

  ENTERPRISE NETWORKS

    An enterprise network is created  through the integration of many  hardware-
and  software-based technologies  and requires  an architecture  that allows the
connectivity  of  a  variety  of   computing  equipment,  cabling  systems   and
communications  protocols. These networks  support mission-critical applications
that are distributed  across enterprises, incorporating  branch offices,  remote
users  and main  campuses into  a cohesive  whole. An  intelligent switching hub
provides the platform upon which enterprise networks are built. The requirements
for these networks are:

       RELIABILITY:    Enterprise  networks  must  have  high  reliability   and
       continuous  availability  in order  to  minimize the  interruption  of an
       organization's computer applications. This requires products to have long
       mean  time  between   failure,  support   fault-tolerant  and   redundant
       configurations and allow maintenance to be performed while the network is
       operating.

       FLEXIBILITY:    Enterprise  networks  must  be  flexible  and  simple  to
       configure, allowing for  organizational growth and  change. The  physical
       portion  of the network  is a structured utility  which, like a telephone
       system, will be used for many years.

       MANAGEABILITY:  The  enterprise network  manager must  have an  efficient
       means  to monitor, control and  change the network remotely  as it may be
       distributed over  many floors  within  a building,  many buildings  on  a
       campus or across numerous remote locations.

       BUILT-IN  MIGRATION:   As  networking  technologies evolve,  so  must the
       network platforms on which  the networks are  built. However, to  protect
       user   investments  in  their   existing  networks,  the  next-generation
       platforms need  to  be compatible  with  existing products  to  allow  an
       efficient, cost-effective migration to the new technologies.

    To  address these  requirements, Chipcom initially  developed its TriChannel
architecture which is  a flexible platform  capable of supporting  a variety  of
wiring  solutions (coaxial  cable, fiber optic  cable and  twisted pair wiring),
communications  protocols  (including  Ethernet,   Token  Ring  and  FDDI)   and
internetworking  devices (bridges and routers), all  of which are designed to be
controlled through

                                       64
<PAGE>
network management software. As the requirements of enterprise networks evolved,
Chipcom  expanded  its  technical  breadth  to  include  a  multiple   backplane
architecture  in the  ONcore Switching  System, which  allows enterprise network
customers to migrate to new technologies such as packet-switching and ATM.

  PRODUCTS

    INTELLIGENT SWITCHING SYSTEMS

    THE ONLINE SYSTEM  PRODUCT FAMILY.   The ONline System  product family is  a
modular  system for building facility  and enterprise networks. First introduced
in 1990, ONline  is Chipcom's  first intelligent switching  network system.  The
core  of the  system is  an intelligent switching  hub called  the ONline System
Concentrator. The  ONline System  product family  includes numerous  modules  to
support Ethernet, Token Ring and FDDI communications protocols being transmitted
over  various types of  cabling systems, such as  shielded or unshielded twisted
pair wiring, fiber-optic cable and thick or thin coaxial cable.

    The ONline  System  Concentrator  incorporates four  key  features  to  meet
enterprise network requirements, as follows:

       TRICHANNEL  ARCHITECTURE:    TriChannel  Architecture  supports  multiple
       high-speed generic data channels and a control channel. The data channels
       can be  dynamically  configured  through  software  to  connect  networks
       containing   any   combination   of  Ethernet,   Token   Ring   and  FDDI
       communications  protocols.  This  architecture   allows  users  to   take
       advantage  of  a range  of  existing and  future  switching capabilities,
       including module switching,  bank switching, per  port switching and  per
       port networking.

       FAULT  TOLERANCE:  Chipcom  designed the ONline  System Concentrator as a
       reliable, fault-tolerant intelligent switching hub. Chipcom achieves this
       fault tolerance through  components such as  network management  modules,
       control  modules, bridges, entire concentrators, power supplies and cable
       links that  allow for  redundant and  back-up configuration  in order  to
       minimize  the  interruption  of  an  organization's  network.  All ONline
       modules and power supplies may be "hot swapped" which allows the  network
       to be reconfigured or repaired with minor interruption.

       NETWORK  CONTROL:  Network control capabilities allow the network manager
       to reconfigure the network in real-time to respond to heavy data  traffic
       conditions, failures in the network and organizational changes.

       SWITCHING:   Switching technology allows a  port, group of ports, module,
       bridge or router to  be assigned to  any one of  multiple networks in  an
       ONline System Concentrator through the use of software without physically
       having to go to the particular concentrator and reassign cables manually.
       Port-switching  technology and TriChannel  Architecture enable the merger
       or isolation of network segments  and dynamic management of data  traffic
       loads.

    ONCORE  SWITCHING SYSTEM.   In the  first quarter of  calendar 1994, Chipcom
introduced   the   ONcore    Switching   System,   Chipcom's    next-generation,
high-capacity, highly scaleable, intelligent switching hub designed for high end
enterprise  networks.  The ONcore  Switching  System incorporates  the  same key
features of  the  ONline  System Concentrator  (TriChannel  Architecture,  fault
tolerance, network control and switching) and provides users a migration path to
high-end  enterprise  networking.  The  ONcore  Switching  System  provides  the
capacity to  link  hundreds  of  users attached  to  both  shared  and  switched
Ethernet, Token Ring and FDDI networks, and is designed to support multi-gigabit
cell- and packet-switching protocols such as ATM.

                                       65
<PAGE>
    In  addition, the ONcore Switching System  platform provides for delivery of
each network switching technology available today, namely:

       MODULE SWITCHING:  Allows the network manager to move entire modules from
       one network segment  to another  to increase the  available capacity  for
       users.

       BANK  SWITCHING:  Provides  the same flexibility  as Module Switching for
       groups of up to 12 users.

       PORT SWITCHING:  Allows for individual users to be moved dynamically from
       one network to another and makes  user moves across the facility easy  to
       reassociate with their appropriate network segment.

       PACKET  SWITCHING:  Allows  for interconnecting network  segments to form
       large logical networks without sacrificing network capacity.

       CELL SWITCHING (ATM):  The latest and most advanced technique for network
       switching, capable of handling data, voice and image information.

    The ONcore Switching System has a full array of media modules. In  addition,
it  is fully  interoperable with the  ONline System Concentrator  and all ONline
System modules can be used in the ONcore Switching System. This  next-generation
compatibility  helps protect  Chipcom's end  users' networking  investments made
over the past four years.

    INFINET SWITCHING SOLUTIONS.  The InfiNET Switching Solutions, introduced in
calendar 1994, is a family of packet-switching products which provide  increased
network  capacity and speed, or network  "bandwidth." These products include the
Galactica Network Switching Hub and the StarBridge Turbo Switch. These  products
have  dual  load-sharing power  supplies to  protect  the network  against power
supply failure and allow the network  to be configured with redundant links  for
further fault tolerance.

    The Galactica Network Switching Hub is a modular switching hub that supports
up  to  32 wirespeed  Ethernet segments  on  a one  gigabit per  second ("Gbps")
backplane and provides  high speed  Ethernet to FDDI  bridging or  FDDI to  FDDI
bridging.  The  StarBridge Turbo  Switch is  a  standalone Ethernet  switch that
supports up  to eight  wire-speed Ethernet  segments. In  addition to  providing
greater  network  bandwidth,  the  InfiNet  Switching  Solutions  allow  network
managers to create virtual  workgroups, or groups of  users on the same  network
even  if they are located on different floors or in different buildings. The use
of virtual workgroups  benefit overall  network operation  by isolating  network
traffic,  creating network  firewalls to  restrict problems  and improve overall
network security.

    In addition to the Galactica Network Switching Hub and the StarBridge  Turbo
Switch,  the InfiNET Switching  Solutions include the  ONsemble Workgroup Switch
which, when combined  with the  ONsemble Ethernet  StackSystem described  below,
provides increased bandwidth and allows network segmentation at remote sites and
within workgroups.

    ONSEMBLE  STACKSYSTEM.  During the first quarter of 1995, Chipcom introduced
the ONsemble StackSystem. These Ethernet and Token Ring hubs and internetworking
products are designed  for remote sites  or workgroups and  provide a  stackable
architecture  scaled to the requirements  of smaller installations. The ONsemble
StackSystem  products  incorporate  high-end  capabilities  typically  found  in
chassis-based  modular  hubs, including  fault tolerance,  sophisticated network
management and  internetworking  and  are  interoperable  with  Chipcom's  other
Intelligent  Switching  Systems  products.  The  ONsemble  StackSystem  includes
stackable Ethernet hubs which are manufactured and sold by DSI.

    The ONsemble StackSystem Ethernet Hubs  are fully managed, 24-port  10BASE-T
concentrators.  Up to seven ONsemble Ethernet  StackSystem Expansion Hubs can be
combined with  an  ONsemble  Ethernet  StackSystem  Management  Hub  to  provide
scaleable support for up to 200 Ethernet ports in

                                       66
<PAGE>
a stack. Using StackWay Cable and software control, each hub in the stack can be
switched  to  any of  four StackWay  Ethernet segments,  providing configuration
flexibility generally found only  in modular hub  platforms. Using a  StarBridge
Turbo  Switch  or an  ONsemble Workgroup  Switch, the  StackWay segments  can be
connected and remotely managed to eliminate network congestion, improve security
and create fault-tolerant configurations.

    The  ONsemble  StackSystem  Token  Ring  Hubs  are  fully  managed,  16-port
concentrators.  Up to  eight passive or  active ONsemble  Token Ring StackSystem
Hubs or internetworking components can be combined to provide scaleable  support
for  up to 128 users  in a stack. Chipcom's  fault tolerant StackJack connectors
permit management of all the StackSystem components and provide for hot-swapping
of components without  powering-down the stack.  The ONsemble StackSystem  Token
Ring  Hubs provide for Remote Monitoring ("RMON") specifications through network
management software.

    ONDEMAND NETWORK  CONTROL  SYSTEM.   The  ONdemand  Network  Control  System
("ONdemand  NCS") is a  graphical network management  system that allows network
managers to monitor  and reconfigure Chipcom's  ONline System Concentrators  and
related  products,  the ONcore  Switching  System and  the  ONsemble StackSystem
products throughout an enterprise network directly from a central console. Also,
ONdemand SwitchCentral extends  the management capabilities  of ONdemand NCS  to
provide full control of Chipcom's InfiNET Switching Solutions.

    ONdemand  NCS provides real-time monitoring and display of the status of the
network at the hub, module and port level. It provides the information  required
to  isolate  performance  bottlenecks  in the  network  and,  combined  with the
switching capabilities  of Chipcom's  networking  products, allows  the  network
manager to reconfigure it to balance network traffic loads.

    ONdemand  NCS is  based on Simple  Network Management  Protocol ("SNMP") and
operates on  most industry-standard  UNIX  based network  management  platforms,
including Sun Microsystems, Inc.'s SunNet Manager, IBM's NetView/6000, Digital's
POLYCENTER platform and Hewlett-Packard Company's HP OpenView platform. There is
also  a Windows based ONdemand NCS  application that provides similar management
capabilities from a personal computer.

    THIRD PARTY  TECHNOLOGIES.   To  expand  the breadth  of  Chipcom's  product
offerings  and to  offer users fully  integrated network  solutions, Chipcom has
worked with several  other network providers  to incorporate their  technologies
into the ONline System Concentrator and the ONcore Switching System. Examples of
these  modular products include remote site routing from Cisco, terminal servers
from Penril Datability Networks and a switch/bridge/router module from Retix.

  RESEARCH AND DEVELOPMENT

    Chipcom's focus has evolved from  the facility, or single location  network,
to  the requirements of  enterprise networks, which are  designed to encompass a
wider geographic  area and  support a  greater  number of  users and  volume  of
traffic  than facility  networks. To  assist customers  in the  migration toward
enterprise  networks,  Chipcom  is  focusing  its  development  efforts  on  new
technologies  and products which are designed  to ensure full compatibility with
Chipcom's existing products. These new technology areas are:

       ATM.   ATM  is a  cell-switching  technology designed  to  simultaneously
       transport  data, voice and video at greater speeds than standard Ethernet
       or Token Ring. Chipcom is currently working with IBM to develop  backbone
       networking  products and  desktop ATM-based  offerings. See "Relationship
       with  IBM."  Chipcom  is  a  principal  member  of  the  ATM  Forum,   an
       industry-wide committee organized to promote development of ATM.

                                       67
<PAGE>
       SWITCHING.       Chipcom   is    currently   developing   next-generation
       packet-switching technology  designed to  be integrated  into the  ONcore
       Switching System and the ONsemble StackSystem. This development builds on
       Chipcom's  experience in developing the  Galactica Network Switching Hub.
       ATM  interfaces  for  these  packet-switching  products  are  also  under
       development.

       REMOTE  SITES.    Chipcom  is  continuing  development  of  the  ONsemble
       StackSystem products  to  provide  greater levels  of  manageability  and
       functionality for remote sites and workgroups within an enterprise.

       NETWORK  MANAGEMENT.  Chipcom is extending and enhancing its ONdemand NCS
       software to support new ONline and ONcore modules, additional  platforms,
       ATM   technology  and   to  provide  further   integration  with  various
       third-party  applications.  In  addition,  management  of  virtual  LANs,
       enabled  by packet-switching and cell-switching technology, is also under
       development.

    In addition  to focusing  on these  technologies, a  significant portion  of
research  and development resources  were devoted in  calendar 1994 to enhancing
the ONcore Switching System. Several  new modules were developed and  introduced
throughout  the year. Also, during calendar 1994, Chipcom introduced its OpenHub
Program which, using  a Chipcom developed  carrier module, provides  third-party
developers  a  standard  form  factor to  facilitate  the  integration  of their
technology into Chipcom's ONline and ONcore platforms.

    Chipcom  is  currently  directing  its  research  and  development   efforts
principally   toward  enhancing  and  extending  the  ONcore  Switching  System,
developing next generation switching and ATM solutions, enhancing and  extending
the  ONsemble StackSystem products and  creating network management applications
to solve enterprise problems.

    Chipcom believes its future  success depends on its  ability to continue  to
enhance  its  existing  products  and  to  develop  new  products  that maintain
technological leadership.  Accordingly,  Chipcom  intends to  continue  to  make
substantial investments in its product development activities and to continue to
participate  in  the  development of  industry  standards. Given  the  nature of
Chipcom's intelligent  switching  systems as  platforms  which are  designed  to
support a broad selection of related technologies, Chipcom currently anticipates
expanding  its product offerings through internal development as well as through
strategic alliances.

    During the first six months  of 1995 and fiscal  years 1994, 1993 and  1992,
research  and  development  expenses  were  approximately  $20.6  million, $32.6
million, $21.8 million and $14.2 million, respectively, which represented 13.1%,
12.2%, 13.6% and 15.4% of revenues,  respectively. As of July 31, 1995,  Chipcom
employed 299 persons in research and development activities.

  DISTRIBUTION STRATEGY

    Chipcom  markets  and  sells  its  products  primarily  through  third-party
distribution channels, including  value-added resellers,  OEMs and  distributors
(collectively, "Resellers"). Because of the complexity of designing facility and
enterprise   networks  to  meet  customers'  needs   and  the  wide  variety  of
technologies involved in a complete  networking solution, Chipcom believes  that
end user customers are best reached through a Reseller distribution strategy.

    Chipcom's  products are distributed through a select group of Resellers that
provide system integration  and support  and focus  their sales  efforts at  the
corporate-level  MIS manager.  The criteria  used by  Chipcom in  selecting this
group  of  Resellers  include  technical  expertise,  reputation  and  financial
resources.  Chipcom  has  developed  a worldwide  distribution  channel  for its
products, which as of July 31, 1995 consisted of approximately 250 Resellers.

    Chipcom's marketing and sales support organizations provide sales, training,
marketing and  technical support  for  Chipcom's Resellers  in North  and  South
America,  Europe, Japan and the Pacific  Rim. Chipcom conducts training programs
for   its   Resellers    and   end    users   worldwide    at   its    corporate

                                       68
<PAGE>
and  field offices and at customer  locations. Chipcom and its Resellers provide
end user support  for Chipcom's products  after installation. Chipcom  currently
provides   a  one-year  warranty  against   defects  in  design,  materials  and
workmanship  on  its  hardware  products.   The  marketing  and  sales   support
organizations  include salespersons and technical  support personnel and totaled
374 people as of July 31, 1995.

  RELATIONSHIP WITH IBM

    In September 1992,  Chipcom signed the  Alliance Agreements with  IBM for  a
worldwide  marketing and development alliance to provide products addressing the
growth of networked personal computers and workstations. Under the terms of  the
Alliance  Agreements, Chipcom and the Networking Systems Line of Business of IBM
have each agreed  to make available  to the  other for internal  use and  resale
certain  of  their  respective  hardware and  software  products,  including all
internally developed intelligent switching hub products developed by or for such
party which are generally available after December 31, 1992.

    Chipcom and IBM  each agreed to  provide manufacturing rights  to the  other
party  for certain hardware products under certain circumstances, subject to the
rights of  third-party  developers. So  long  as products  manufactured  by  IBM
constitute  a certain  level of  the revenues  derived by  IBM from  the sale of
intelligent switching hub  products, Chipcom  will not be  obligated to  provide
additional manufacturing rights to IBM.

    During  the term of the  Alliance Agreements, IBM has  agreed not to acquire
more than 10% of the outstanding capital stock of Chipcom. However, IBM shall be
relieved of this restriction if any party engaged in the business of developing,
producing, manufacturing, selling, licensing  or leasing information  processing
hardware  or  software  that  meets certain  revenue  thresholds  (a "Designated
Acquirer") acquires 5% or more of  the outstanding capital stock of Chipcom.  In
addition,  if the  Chipcom Board initiates  a sale  of 50% or  more of Chipcom's
outstanding capital stock or substantially all of Chipcom's assets to any  third
party,  or 25% or  more of Chipcom's  outstanding capital stock  to a Designated
Acquirer, then IBM shall have  a right of first offer  for a period of 30  days.
IBM  was provided notice of, and waived this right with respect to, the proposed
Merger. See "The Merger -- Background of the Merger."

    The Alliance Agreements  have an initial  term of five  years. Either  party
shall  have the right, however, to terminate the Alliance Agreements on or after
April  1,  1994.  If  either  party  initiates  such  a  termination,  then  the
non-terminating  party shall have  the right to  terminate its obligations under
the Alliance Agreements, including any  manufacturing rights license granted  by
it,  and to retain all manufacturing rights  and software licenses granted to it
(subject to the  obligation of the  non-terminating party to  pay license  fees,
royalties  and other fees).  In addition, if  at any time  a Designated Acquirer
acquires 25% or more  of the outstanding capital  stock of Chipcom, or  acquires
all  or substantially all of the assets of  Chipcom, IBM shall have the right to
terminate the Alliance Agreements.

    Chipcom began selling products to IBM under these Alliance Agreements in the
fourth quarter of 1992.  Sales to IBM  during the first six  months of 1995  and
fiscal  1994  and 1993  were $47.2  million, $102.4  million and  $34.0 million,
respectively, or 29.9%, 38.2% and 21.2%, respectively, of revenues. Sales to IBM
were not material in 1992. The volume of  products to be sold by Chipcom to  IBM
is based on forecasts supplied by IBM and not on specific purchase requirements.
Sales  to IBM declined to $16.6 million in the second quarter of 1995 from $30.6
million in the first  quarter of 1995.  This decrease in  sales to IBM  resulted
primarily  from an inventory imbalance  at IBM and a  decrease in IBM's sales to
its customers. Chipcom anticipates  that revenues from sales  to IBM during  the
third quarter of fiscal 1995 may decrease from the second quarter level.

    IBM  may elect to develop products competitive with Chipcom's products which
could have a material adverse effect on Chipcom's business. A termination of, or
significant adverse change in,  the relationship between  IBM and Chipcom  would
have a material adverse effect on Chipcom.

                                       69
<PAGE>
  RELATIONSHIP WITH DIGITAL

    Chipcom's relationship with Digital began in 1987 and Digital has acted as a
Reseller  of  Chipcom's products  since  1989. During  1993  and 1992,  sales to
Digital were approximately  $31.2 million  and $31.3  million, respectively,  or
19.5%  and 34.0%, respectively,  of revenues. As a  result of increased revenues
from other Resellers and the introduction in 1994 by Digital of intelligent  hub
products  that compete with  certain of Chipcom's products,  sales to Digital in
1994 represented less then 10% of Chipcom's revenues.

  ACQUISITION OF CHIPCOM EUROPE B.V.

    Effective June 29, 1992, Chipcom completed the acquisition of Chipcom Europe
B.V. ("Chipcom Europe"), a Dutch  company, and its subsidiaries. Chipcom  Europe
was  organized and  financed in June,  1991, as an  independent entity dedicated
exclusively to the marketing, sales and support of Chipcom's products in  Europe
and  certain countries in  the Middle East  and Africa. In  connection with such
acquisition, Chipcom issued to the  Chipcom Europe shareholders an aggregate  of
569,994  shares of Common Stock.  As a result of  this transaction, Chipcom owns
all of the outstanding stock of Chipcom Europe.

    During 1992, sales  of Chipcom's  products to  Chipcom Europe  prior to  its
acquisition by Chipcom were $11.7 million, or 12.7% of revenues.

  MERGER WITH ARTEL

    On  February 14, 1994, Chipcom completed a transaction with Artel, a Hudson,
Massachusetts company which specializes in Ethernet packet switching technology.
Pursuant to this  transaction, Artel  merged with  a subsidiary  of Chipcom  and
became a wholly-owned subsidiary of Chipcom.

    Under  the terms of the merger, each outstanding share of Artel common stock
was exchanged  for .07203682  shares  of Chipcom  Common Stock.  Chipcom  issued
approximately  1,131,000  shares of  Common  Stock in  exchange  for all  of the
outstanding shares of Artel common stock, and Chipcom has reserved approximately
86,000 additional shares of Common Stock for issuance to holders of options  and
warrants formerly exercisable into shares of Artel common stock.

    This  transaction  has  been  accounted  for  as  a  pooling  of  interests.
Accordingly, all  financial data  for  periods prior  to  the merger  have  been
restated to reflect the combined operations of Chipcom and Artel.

  ACQUISITION OF DSI

    Effective August 31, 1994, Chipcom acquired all of the outstanding shares of
common  stock of  DSI, a Sunnyvale,  California company,  for approximately $4.4
million cash.  DSI develops,  manufactures and  sells stackable  Ethernet  hubs,
which  are  part  of Chipcom's  ONsemble  StackSystem, and  low-end  modular hub
products. The acquisition has been accounted for as a purchase and, accordingly,
the results of operations  of DSI have been  included in Chipcom's  consolidated
financial statements since August 31, 1994.

  AGREEMENT WITH LANART CORPORATION

    Chipcom  entered into  an agreement  in July,  1992 with  LANart Corporation
("LANart"), relating to the  organization, funding and  operation of LANart  and
the  transfer of certain of Chipcom's technology to LANart. LANart was organized
in April 1992 by Dr. Yoseph Linde, former Chairman of the Chipcom Board for  the
purpose  of  developing  and  marketing  single-protocol,  stand-alone  computer
networking products.

    In July 1993, Chipcom and LANart  amended and restated the agreement.  Under
the  terms of this restated agreement, Chipcom agreed to purchase from LANart up
to $6.0  million in  products over  a  period of  approximately five  years.  In
addition, the restated agreement terminated certain restrictions imposed on each
party  concerning development  of products  in the  other party's  field and the
restriction on the sale of products by LANart to Chipcom competitors. Under this
restated agreement,

                                       70
<PAGE>
LANart repurchased from Chipcom for a nominal purchase price preferred stock  of
LANart  representing  approximately  6.0% of  the  capital stock  of  LANart and
Chipcom's right to designate a  member of the board  of directors of LANart  has
terminated.

    In  July 1994, Chipcom and LANart  further amended the agreement whereby the
$6.0 million purchase commitment over five  years was reduced to a $1.2  million
purchase  commitment through December 31,  1995. In addition, LANart repurchased
from Chipcom for a nominal purchase price preferred stock of LANart representing
approximately 3.0% of the capital stock of LANart.

    In November 1994, Chipcom purchased, on a pro rata basis, preferred stock of
LANart offered in a private placement. Chipcom's ownership of preferred stock of
LANart represents less than 10% of the capital stock of LANart. Chipcom accounts
for its investment in LANart using the cost method.

    Mr. Fishman, a  director of  Chipcom, serves  as a  member of  the board  of
directors of LANart. No other director or officer of Chipcom currently serves as
a director or officer of LANart.

  MANUFACTURING AND SUPPLIERS; BACKLOG

    Chipcom's  manufacturing operations consist primarily  of final assembly and
test and of quality control of materials, components, subassemblies and systems.

    Although Chipcom  generally  uses  standard parts  and  components  for  its
products,  certain components are currently available  only from a single source
or from  limited  sources. For  example,  Chipcom purchases  10BASE-T  chip-sets
solely   from  AT&T  Company  ("AT&T"),   certain  fiber-optic  components  from
Hewlett-Packard, certain power supplies from Power Switch, Inc. and Astec  Power
Supply  Co., Ltd.  and certain microchips  from National  Semiconductor, Inc. To
date, Chipcom has been able to obtain adequate supplies of such components in  a
timely  manner  from  existing  sources  or,  when  necessary,  from alternative
sources.

    The majority of Chipcom's revenue in each quarter results from orders booked
in that quarter. Accordingly, Chipcom does  not believe that its backlog at  any
particular point in time is indicative of future sales.

  COMPETITION

    The  market  for  networking  systems  is  extremely  competitive,  and  the
competition is likely  to intensify. Chipcom  experiences competition from  many
vendors  of  network systems,  including Bay  Networks, Cabletron,  Digital, and
Ungermann-Bass.

    The principal competitive  factors in  the market  for Chipcom's  networking
products are performance, technical features, including support for ATM, product
breadth,  distribution channels, price, time-to-market  and customer service and
support. Chipcom believes that it, in conjunction with its Resellers,  currently
competes  favorably with  respect to  each of these  factors. Due  to the highly
competitive  nature  of  Chipcom's  business,  Chipcom  anticipates  that  price
competition  may increase in the future. Chipcom believes that certain technical
features in  its system  networking products  (such as  a high  degree of  fault
tolerance,  the  flexibility  of  the  TriChannel  Architecture,  remote network
reconfiguration,  switching  technologies  and  built-in  migration  capability)
differentiate  its products  from other  materially competitive  products in the
market.

  PROPRIETARY RIGHTS

    Chipcom relies  on a  combination  of patent,  trade secret,  copyright  and
trademark  law, nondisclosure agreements and technical measures to establish and
protect its proprietary  rights in  its products. Chipcom  and its  subsidiaries
currently  hold 16 United  States and two foreign  patents and have applications
pending for several additional United  States and foreign patents. Chipcom  also
has  certain registered and other trademarks.  Chipcom believes that, because of
the rapid pace of  technological change in the  networking industry, patent  and
copyright protection are less significant to Chipcom's competitive position than
factors  such as the  knowledge, ability and  experience of Chipcom's personnel,
new product development, market recognition and ongoing product maintenance  and
support.

                                       71
<PAGE>
  EMPLOYEES

    Chipcom  and its  wholly-owned subsidiaries  had 918  employees at  July 31,
1995,  including  374  in  marketing,   sales  and  support  services,  299   in
engineering,  research and development, 136 in manufacturing and operations, and
109 in corporate operations and administration. Of the 918 employees at July 31,
1995, 776 were employed in North America, 89 in Europe, 31 in Israel, 19 in  the
Pacific  Rim  and  three  in  South  America.  None  of  Chipcom's  employees is
represented by a  labor union.  Chipcom has  experienced no  work stoppages  and
believes that its relations with its employees are excellent.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

    The  following table  sets forth certain  information, as of  July 31, 1995,
with respect to the beneficial ownership of the Chipcom Common Stock by (i) each
director; (ii) Chipcom's  Chief Executive  Officer and each  of Chipcom's  other
four most highly compensated executive officers whose salary and bonus in fiscal
1994  exceeded  $100,000;  and (iii)  all  directors and  executive  officers of
Chipcom as a group. To Chipcom's knowledge, based upon a review of Schedule  13G
and  Schedule  13D  filings made  with  the  Commission during  1995,  no person
beneficially owns 5% of the outstanding Chipcom Common Stock.

<TABLE>
<CAPTION>
                                                                   SHARES OF
                                                                    CHIPCOM       PERCENTAGE
                                                                  COMMON STOCK    OF CHIPCOM
                                                                  BENEFICIALLY   COMMON STOCK
NAME                                                               OWNED (1)     OUTSTANDING
---------------------------------------------------------------  --------------  ------------
<S>                                                              <C>             <C>
John Robert Held...............................................      245,405         1.4%
Richard M. Burnes, Jr..........................................       33,866          *
Jerald G. Fishman..............................................       13,500          *
Victoria A. Brown..............................................       12,000          *
William H. Sitter..............................................        6,000          *
Frank A. Onians................................................        --             *
Robert P. Badavas..............................................      123,808(2)       *
Bruce L. Cohen.................................................       24,746          *
Menachem E. Abraham............................................       24,223          *
Roy J. Moffa...................................................       12,547          *
All directors and executive officers as a group (11 persons)...      516,036         3.0%
<FN>
------------------------
 *   Less than 1% of the shares of Chipcom Common Stock outstanding

(1)  The  inclusion  herein  of  any  shares  of  Chipcom  Common  Stock  deemed
     beneficially owned does not constitute an admission of beneficial ownership
     of  those shares. Unless otherwise  indicated, each stockholder referred to
     above has  sole voting  and investment  power with  respect to  the  shares
     listed.
     The  number of  shares of Chipcom  Common Stock beneficially  owned by each
     director or  executive  officer  is  determined  under  the  rules  of  the
     Commission  and the information is not necessarily indicative of beneficial
     ownership for any  other purpose.  Under such  rules, beneficial  ownership
     includes any shares as to which each director or executive officer has sole
     or  shared voting power or investment power  and also any shares of Chipcom
     Common Stock into  which any  options held  by such  director or  executive
     officer are exercisable within 60 days after July 31, 1995.
     Includes  the following shares  of Common Stock  issuable pursuant to stock
     options exercisable within 60 days after July 31, 1995: options to  acquire
     206,405  shares held by Mr. Held, options  to acquire 24,000 shares held by
     Mr. Burnes, options to acquire 13,500  shares held by Mr. Fishman,  options
     to acquire 12,000 shares held by Ms. Brown, options to acquire 6,000 shares
     held  by Mr. Sitter, options to acquire 119,727 shares held by Mr. Badavas,
     options to acquire 22,216 shares
</TABLE>

                                       72
<PAGE>
<TABLE>
<S>  <C>
     held by Mr. Cohen, options to acquire 23,812 shares held by Mr. Abraham and
     options to acquire 11,249 shares held  by Mr. Moffa and options to  acquire
     458,250 shares held by all executive officers and directors as a group.
(2)  Includes 3,402 shares of Common Stock owned by Mr. Badavas as custodian for
     his children.
</TABLE>

CHIPCOM STOCKHOLDER RIGHTS PLAN

    On  August 1,  1995, the Chipcom  Board approved and  adopted a stockholders
rights plan (the "Chipcom Rights Plan") and declared a dividend of one preferred
stock purchase right (a  "Right") for each outstanding  share of Chipcom  Common
Stock to stockholders of record at the close of business on August 14, 1995 (the
"Record  Date").  Each Right  entitles the  registered  holder to  purchase from
Chipcom a unit consisting of one one-thousandth of a share (a "Unit") of  Series
A  Junior Participating Preferred Stock, $.10 par value per share, at a purchase
price of $145 in cash per Unit,  subject to adjustment. Pursuant to the  Chipcom
Rights  Plan, the  Rights automatically attach  to and trade  together with each
share  of  Chipcom  Common  Stock.  The  Rights  will  not  be  exercisable   or
transferable  separately from the  shares of Chipcom Common  Stock to which they
are attached  until the  earlier of  (i)  10 business  days following  a  public
announcement  that a  person or  group of  affiliated or  associated persons (an
"Acquiring Person") has acquired, or  obtained the right to acquire,  beneficial
ownership  of 15% or more  of the outstanding shares  of Chipcom Common Stock (a
"Stock Acquisition Date"), or (ii)  10 business days following the  commencement
of  the tender offer  or exchange offer that  would result in  a person or group
individually owning 30%  or more  of the  outstanding shares  of Chipcom  Common
Stock (the earlier of such dates being referred to as the "Distribution Date").

    The Rights will expire at the earlier of the Effective Time and the close of
business  on August 1, 2005, unless earlier  redeemed or exchanged by Chipcom in
accordance with  the  Chipcom Rights  Plan.  The Rights  are  redeemable,  under
certain circumstances, for $.01 per Right.

    In  the event that (i) Chipcom is the surviving corporation in a merger with
an Acquiring Person and the Chipcom Common Stock is not changed or exchanged, or
(ii) a  person  becomes the  beneficial  owner of  more  than 15%  of  the  then
outstanding shares of Chipcom Common Stock, except pursuant to a Permitted Offer
(as  defined in the Chipcom Rights Plan), each holder of a Right will thereafter
have the  right to  receive, upon  exercise, that  number of  shares of  Chipcom
Common Stock which equals the exercise price of the Right divided by one-half of
the  current  market  price of  the  Chipcom Common  Stock  at the  date  of the
occurrence of  the  event. However,  in  any such  event,  all Rights  that  are
beneficially owned by any Acquiring Person will be null and void.

    In the event that, and at any time following the Stock Acquisition Date, (i)
Chipcom  is acquired  in a merger  or other business  combination transaction in
which Chipcom is not  the surviving corporation or  the Chipcom Common Stock  is
changed  or exchanged (other  than a merger  that follows a  Permitted Offer) or
(ii) 50% or more of  Chipcom's assets or earning  power is sold or  transferred,
each  holder of  a Right  (except Rights  which previously  have been  voided as
described above) shall thereafter have the right to receive, upon exercise  that
number  of shares  of common  stock of  the acquiring  company which  equals the
exercise price of the Rights divided by one-half of the current market price  of
such  common  stock at  the date  of the  occurrence of  such event.  The events
referred to in  this paragraph and  the preceding paragraph  are referred to  as
"Triggering Events."

    The   Chipcom  Rights  Plan  provides   that  no  Distribution  Date,  Stock
Acquisition Date  or Triggering  Event shall  be deemed  to have  occurred,  and
neither  3Com nor  any affiliate  or associate thereof  shall be  deemed to have
become  an  Acquiring  Person,  by  reason  of  the  Merger  Agreement  and  the
consummation of the transactions contemplated thereby.

    A  description of  the Rights  is set forth  in the  Rights Agreement, dated
August 1, 1995, between Chipcom and The  First National Bank of Boston which  is
filed  as an exhibit to Chipcom's Current Report  on Form 8-K filed on August 4,
1995.

                                       73
<PAGE>
               UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS

    The following unaudited pro forma combined financial statements give  effect
to  the proposed merger of 3Com and Chipcom on a pooling of interests basis. The
unaudited pro forma combined  financial statements are  based on the  respective
historical  and supplemental  historical financial  statements which  are either
included or  incorporated  by  reference  elsewhere  in  this  Proxy  Statement/
Prospectus.  The unaudited  pro forma  combined balance  sheet assumes  that the
Merger took place on May 31, 1995 and combines 3Com's May 31, 1995  supplemental
consolidated  balance sheet with  Chipcom's July 1,  1995 unaudited consolidated
balance sheet. The unaudited pro forma combined statements of operations  assume
that  the Merger  took place as  of the  beginning of the  periods presented and
combine 3Com's supplemental consolidated statements of operations for the fiscal
years ended May 31, 1995, 1994  and 1993 with Chipcom's consolidated results  of
operations  for the twelve  months ended July  1, 1995, and  for the years ended
December 25, 1993 and December 26, 1992, respectively. This presentation has the
effect of excluding  Chipcom's results  of operations for  the six-month  period
ended  June  25,  1994  from  the unaudited  pro  forma  combined  statements of
operations.

    3Com's supplemental  consolidated  balance sheet  as  of May  31,  1995  and
supplemental  consolidated statements  of operations  for the  periods presented
include the balance sheet and statements  of operations of Primary Access,  with
which  3Com consummated  a business  combination accounted  for on  a pooling of
interests basis as of June 9, 1995, and also reflect a two-for-one split of 3Com
Common Stock issued on August 25, 1995 to shareholders of record as of August 4,
1995.

    The unaudited  pro forma  combined  financial statements  are based  on  the
estimates  and assumptions set  forth in the  notes to such  statements. The pro
forma adjustments  made in  connection with  the development  of the  pro  forma
information are preliminary and have been made solely for purposes of developing
such  pro forma information  for illustrative purposes  necessary to comply with
the disclosure requirements of the Commission. The unaudited pro forma  combined
financial  statements  do  not  purport  to  be  indicative  of  the  results of
operations of future periods or the  combined financial position or the  results
that  actually would have  been realized had  the entities been  a single entity
during these periods.

    3Com and Chipcom estimate that they  will incur direct transaction costs  of
approximately  $10 million associated  with the Merger which  will be charged to
operations in  the  fiscal  quarter  in which  the  Merger  is  consummated.  In
addition,  it  is  expected  that  following  the  Merger,  3Com  will  incur  a
restructuring charge to operations, currently estimated to be between $40 to $50
million in the fiscal quarter in which the Merger is consummated. This amount is
a preliminary estimate only and is therefore subject to change. There can be  no
assurance  that 3Com will not incur additional charges in subsequent quarters to
reflect costs associated with the Merger.

    These unaudited pro forma  combined financial statements  should be read  in
conjunction   with  the  historical   and  supplemental  consolidated  financial
statements and the related notes thereto  of 3Com and Chipcom, which are  either
included or incorporated by reference elsewhere herein.

                                       74
<PAGE>
                                3COM AND CHIPCOM
                   UNAUDITED PRO FORMA COMBINED BALANCE SHEET
                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>
                                                          3COM        CHIPCOM
                                                       AT MAY 31,   AT JULY 1,       PRO FORMA        PRO FORMA
                                                          1995         1995        ADJUSTMENTS*       COMBINED
                                                       -----------  -----------  -----------------  -------------
<S>                                                    <C>          <C>          <C>                <C>
ASSETS
Current Assets:
  Cash and cash equivalents..........................  $   149,210  $    14,833                     $     164,043
  Temporary cash investments.........................      184,338       28,390                           212,728
  Trade receivables -- net...........................      199,939       48,563                           248,502
  Inventories........................................      124,058       70,204  $  (21,000)(3)           173,262
  Deferred income taxes..............................       43,922       11,195         6,100        )(4        61,217
  Other..............................................       21,868        4,524                            26,392
                                                       -----------  -----------      --------       -------------
    Total current assets.............................      723,335      177,709       (14,900     )       886,144
Property & equipment -- net..........................      110,449       42,174       (10,000      (3)       142,623
Other assets.........................................       24,022       16,247        (3,000      (3)        39,350
                                                                                        2,081        )(5
                                                       -----------  -----------      --------       -------------
Total................................................  $   857,806  $   236,130  $    (25,819     ) $   1,068,117
                                                       -----------  -----------      --------       -------------
                                                       -----------  -----------      --------       -------------

LIABILITIES & SHAREHOLDERS' EQUITY

Current Liabilities:
  Accounts payable...................................  $    92,750  $    21,528                     $     114,278
  Accrued and other liabilities......................      126,124       24,414                           150,538
  Accrued restructuring and transaction costs........           --           --  $     21,000     (3)        21,000
  Income taxes payable...............................       52,853        6,232                            59,085
  Current portion of long-term obligations...........          197          996                             1,193
                                                       -----------  -----------      --------       -------------
    Total current liabilities........................      271,924       53,170        21,000             346,094
Long-term debt.......................................      110,000           29                           110,029
Other long-term obligations..........................        1,094       10,268        (4,919      (5)         6,443
Shareholders' Equity:
  Common stock (3Com: 143,064,572 shares; Chipcom:
   17,073,045 shares; and 161,162,000 shares on a pro
   forma combined basis).............................      311,075      129,238                           440,313
  Unamortized restricted stock grants................       (2,037)          --                            (2,037)
  Retained earnings..................................      165,735       43,425       (37,900      (3)       167,348
                                                                                       (4,000      (4)
                                                                                           88     (5)
  Unrealized gain (loss) on available-for-sale
   securities........................................          184           --           (88      (5)            96
  Accumulated translation adjustments................         (169)          --                              (169)
                                                       -----------  -----------      --------       -------------
    Total shareholders' equity.......................      474,788      172,663       (41,900     )       605,551
                                                       -----------  -----------      --------       -------------
Total................................................  $   857,806  $   236,130  $    (25,819     ) $   1,068,117
                                                       -----------  -----------      --------       -------------
                                                       -----------  -----------      --------       -------------
</TABLE>

* See accompanying Notes to Unaudited Pro Forma Combined Financial Statements

                                       75
<PAGE>
                                3COM AND CHIPCOM
             UNAUDITED PRO FORMA COMBINED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                          CHIPCOM
                                                             3COM       YEAR ENDED
                                                          YEAR ENDED      JULY 1,      PRO FORMA      PRO FORMA
                                                         MAY 31, 1995      1995      ADJUSTMENTS*     COMBINED
                                                         -------------  -----------  -------------  -------------
<S>                                                      <C>            <C>          <C>            <C>
Sales..................................................  $   1,325,693   $ 312,309                  $   1,638,002
Costs and Expenses:
  Cost of sales........................................        615,253     148,629                        763,882
  Selling, general and administrative..................        314,440      87,166                        401,606
  Research and development.............................        133,687      39,316                        173,003
  Purchased in-process technology......................         60,796       7,900                         68,696
  Non-recurring items..................................          5,000          --                          5,000
                                                         -------------  -----------                 -------------
    Total..............................................      1,129,176     283,011                      1,412,187
                                                         -------------  -----------                 -------------
Operating income.......................................        196,517      29,298                        225,815
Other income -- net....................................          3,359       1,874                          5,233
                                                         -------------  -----------                 -------------
Income before income taxes.............................        199,876      31,172                        231,048
Provision for income taxes.............................         73,877      11,399   $2,000 (4)            87,276
                                                         -------------  -----------  -------------  -------------
    Net income.........................................  $     125,999  $   19,773   $   (2,000   ) $     143,772
                                                         -------------  -----------  -------------  -------------
                                                         -------------  -----------  -------------  -------------
Net income per common and equivalent share:
  Primary..............................................          $0.83       $1.12                          $0.85
  Fully diluted........................................          $0.83       $1.12                          $0.84

Common and equivalent shares used in computing per
 share amounts:
  Primary..............................................        151,062      17,631       1,058 (2)        169,751
  Fully diluted........................................        152,698      17,631       1,058 (2)        171,387
</TABLE>

* See accompanying Notes to Unaudited Pro Forma Combined Financial Statements

                                       76
<PAGE>
                                3COM AND CHIPCOM
             UNAUDITED PRO FORMA COMBINED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                        CHIPCOM
                                                            3COM       YEAR ENDED
                                                         YEAR ENDED     DEC. 25,      PRO FORMA      PRO FORMA
                                                        MAY 31, 1994      1993      ADJUSTMENTS*     COMBINED
                                                        ------------  ------------  -------------  -------------
<S>                                                     <C>           <C>           <C>            <C>
Sales.................................................   $  851,047    $  160,486                  $   1,011,533
Costs and Expenses:
  Cost of sales.......................................      415,980        69,560                        485,540
  Selling, general and administrative.................      217,837        49,093                        266,930
  Research and development............................       79,327        21,758                        101,085
  Purchased in-process technology.....................      134,481            --                        134,481
                                                        ------------  ------------                 -------------
    Total.............................................      847,625       140,411                        988,036
                                                        ------------  ------------                 -------------
Operating income......................................        3,422        20,075                         23,497
Gain on sale of investment............................       17,746            --                         17,746
Other income -- net...................................        3,313           665                          3,978
                                                        ------------  ------------                 -------------
Income before income taxes............................       24,481        20,740                         45,221
Provision for income taxes............................       48,697         8,394                         57,091
                                                        ------------  ------------                 -------------
Income (loss) before cumulative effect of change in
 accounting principle.................................   $  (24,216)   $   12,346                  $     (11,870)
                                                        ------------  ------------                 -------------
                                                        ------------  ------------                 -------------
Income (loss) per common and equivalent share before
 cumulative effect of change in accounting principle:
  Primary.............................................       $(0.19)        $0.78                         $(0.08)
  Fully diluted.......................................       $(0.19 )       $0.78                         $(0.08)

Common and equivalent shares used in computing per
 share amounts:
  Primary.............................................      129,620        15,791         (272    (2)       145,139
  Fully diluted.......................................      129,620        15,791         (272    (2)       145,139
</TABLE>

* See accompanying Notes to Unaudited Pro Forma Combined Financial Statements

                                       77
<PAGE>
                                3COM AND CHIPCOM
             UNAUDITED PRO FORMA COMBINED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                           CHIPCOM
                                                               3COM       YEAR ENDED
                                                            YEAR ENDED     DEC. 26,     PRO FORMA     PRO FORMA
                                                           MAY 31, 1993      1992      ADJUSTMENTS*   COMBINED
                                                           ------------  ------------  ------------  -----------
<S>                                                        <C>           <C>           <C>           <C>
Sales....................................................   $  630,966    $   92,265                 $   723,231
Costs and Expenses:
  Cost of sales..........................................      326,985        38,115                     365,100
  Selling, general and administrative....................      175,457        30,272                     205,729
  Research and development...............................       66,995        14,181                      81,176
  Non-recurring items....................................        1,316            --                       1,316
                                                           ------------  ------------                -----------
    Total................................................      570,753        82,568                     653,321
                                                           ------------  ------------                -----------
Operating income.........................................       60,213         9,697                      69,910
Other income -- net......................................        1,200           450                       1,650
                                                           ------------  ------------                -----------
Income before income taxes...............................       61,413        10,147                      71,560
Provision for income taxes...............................       21,736         4,778                      26,514
                                                           ------------  ------------                -----------
Net income...............................................   $   39,677    $    5,369                 $    45,046
                                                           ------------  ------------                -----------
                                                           ------------  ------------                -----------
Net income per common and equivalent share:
  Primary................................................        $0.30         $0.38                       $0.31
  Fully diluted..........................................        $0.30         $0.38                       $0.30

Common and equivalent shares used in computing per share
 amounts:
  Primary................................................      130,784        14,178         851(2 )     145,813
  Fully diluted..........................................      132,872        14,178         851(2 )     147,901
</TABLE>

*  See accompanying Notes to Unaudited Pro Forma Combined Financial Statements

                                       78
<PAGE>
           NOTES TO UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS

NOTE 1.  PERIODS COMBINED

    The 3Com supplemental consolidated balance sheet as of May 31, 1995 has been
combined with the Chipcom consolidated balance sheet as of July 1, 1995.

    The  3Com supplemental consolidated statements of operations for each of the
fiscal years ended  May 31,  1995, 1994  and 1993  have been  combined with  the
Chipcom  consolidated statements of  income for the twelve  months ended July 1,
1995, and  for  the  years  ended  December 25,  1993  and  December  26,  1992,
respectively. This presentation has the effect of excluding Chipcom's results of
operations  for the six-month period ended June  25, 1994 from the unaudited pro
forma combined statements of operations.

NOTE 2.  PRO FORMA EARNINGS PER SHARE

    The unaudited pro  forma combined  income (loss) per  common and  equivalent
share  is based upon the weighted average number of common and equivalent shares
outstanding of 3Com and Chipcom for each period using an exchange ratio of  1.06
shares  of 3Com Common Stock  for each share of  Chipcom Common Stock, except in
loss periods when common  stock equivalent shares are  excluded as their  effect
would   be  antidilutive.  The  effect  of  the  assumed  conversion  of  3Com's
convertible subordinated notes was antidilutive for the periods presented.

NOTE 3.  TRANSACTION COSTS AND RESTRUCTURING EXPENSES

    3Com and  Chipcom  estimate they  will  incur direct  transaction  costs  of
approximately  $10 million  associated with the  Merger, consisting  of fees for
investment banking,  legal, accounting,  financial  printing and  other  related
charges.

    In  addition, it is  expected that as  a result of  the Merger, the combined
company will incur restructuring  expenses estimated to be  between $40 and  $50
million. For the purposes of the preparation of the unaudited pro forma combined
financial  statements,  an  estimate of  $55  million  is used  for  the  sum of
transaction costs  and restructuring  expenses. The  restructuring expenses  are
expected to include:

        - write-off  of assets including  capitalized software, purchased
          technology,  inventory   and  fixed   assets  associated   with
          duplicate product lines;

        - elimination  of  duplicate management  information  systems and
          facilities, including cancellation of leases; and

        - severance and outplacement costs.

    The income tax effect  of these expenses  has also been  reflected as a  pro
forma  adjustment. These nonrecurring costs will be charged to operations in the
fiscal quarter  in which  the Merger  is consummated.  The unaudited  pro  forma
combined  balance  sheet gives  effect  to such  expenses  as if  they  had been
incurred as  of May  31, 1995,  but the  effects of  these costs  have not  been
reflected in the unaudited pro forma combined statements of operations.

NOTE 4.  PROVISION FOR INCOME TAXES

    The  provision for income taxes reflects  pro forma adjustments to provide a
valuation allowance for certain deferred tax assets.

NOTE 5.  CONFORMING ADJUSTMENTS AND INTERCOMPANY TRANSACTIONS

    There have  been no  other adjustments  required to  conform the  accounting
policies  of the combined  company, except as described  in Note 4. Intercompany
transactions between 3Com and Chipcom  have been insignificant. Certain  Chipcom
amounts   have  been  reclassified  to  conform  with  the  financial  statement
classification of 3Com.

                                       79
<PAGE>
                        COMPARISON OF STOCKHOLDER RIGHTS

    The following is a  summary of certain of  the material differences  between
the  rights of holders of 3Com Common Stock and the rights of holders of Chipcom
Common Stock. Since 3Com is organized under the laws of the State of  California
and  Chipcom  is  organized  under  the laws  of  the  State  of  Delaware, such
differences arise from  differences between  various provisions  of the  charter
documents  of  3Com and  Chipcom as  well  as from  the differences  between the
California General Corporation Law ("CGCL") and the Delaware General Corporation
Law ("DGCL").

    CUMULATIVE VOTING.   In an  election of directors  under cumulative  voting,
each  share of stock normally  having one vote is entitled  to a number of votes
equal to the number of directors to be elected. A shareholder may then cast  all
such  votes for a single candidate or may allocate them among as many candidates
as the shareholders  may choose.  Without cumulative  voting, the  holders of  a
majority  of the shares present at an annual meeting or any special meeting held
to elect directors would have the power to elect all the directors to be elected
at that meeting, and no person could  be elected without the support of  holders
of a majority of the shares voting at such meeting.

    Under  the CGCL, cumulative voting  in the election of  directors is a right
available to all shareholders of California corporations unless a corporation is
"listed" and that corporation's charter documents specifically eliminate voting.
3Com's Bylaws eliminate cumulative voting. Under the DGCL, cumulative voting  in
the  election of directors  is not mandatory.  Chipcom's Restated Certificate of
Incorporation also prohibits cumulative voting.

    SHAREHOLDER POWER TO CALL SPECIAL SHAREHOLDERS  MEETING.  Under the CGCL,  a
special  meeting of shareholders  may be called  by the board  of directors, the
chairman of the board, the president, the holders of shares entitled to cast not
less than 10% of the votes at such meeting and such persons authorized to do  so
in the articles of incorporation or bylaws.

    Under the DGCL, a special meeting of stockholders may be called by the board
of  directors  or any  other person  authorized  to do  so in  the corporation's
certificate of incorporation  or bylaws. Chipcom's  Bylaws provide that  special
meetings  of stockholders  may be  called only  by the  Board of  Directors, the
president or by a resolution  adopted by the affirmative  vote of a majority  of
the Chipcom Board or by the holders of shares entitled to cast not less than 10%
of the votes at the meeting.

    DISSOLUTION.   Under the CGCL, shareholders holding 50% or more of the total
voting power may authorize a corporation's voluntary dissolution, and this right
may not be modified by its articles of incorporation.

    Under the DGCL, a dissolution must be approved by stockholders holding  100%
of  the total voting power or the dissolution  must be initiated by the board of
directors and approved by  the holders of a  majority of the outstanding  voting
shares of the corporation.

    SIZE  OF BOARD OF DIRECTORS.  Under the CGCL, although changes in the number
of directors  must be  in general  approved by  the shareholders,  the board  of
directors  of a California corporation may fix  the number of directors within a
stated range set forth in the corporation's articles of incorporation or bylaws,
if the stated range has been approved by the shareholders. 3Com's Bylaws fix the
authorized number of directors at a range from seven to eleven, with the  number
currently  set  at eight,  with changes  in the  authorized number  of directors
permitted by either  the Board of  Directors or the  shareholders. In  addition,
3Com's  Bylaws require  that the  Board include  not less  than two "independent
directors" who are not officers or employees of 3Com.

    The DGCL permits the board of directors of a Delaware corporation to  change
the  authorized number of directors by  amendment to the corporation's bylaws or
in the manner provided in the bylaws unless the number of directors is fixed  in
the  corporation's certificate of  incorporation, in which case  a change in the
number of  directors  may  be made  only  by  amendment to  the  certificate  of

                                       80
<PAGE>
incorporation.  Chipcom's Bylaws provide that the number of directors of Chipcom
will not be less than three nor more than nine, with the exact number fixed from
time to time by a majority of the  directors of Chipcom in office, even if  less
than a quorum.

    CLASSIFIED BOARD OF DIRECTORS.  A classified board is one in which a certain
number, but not all, of the directors are elected on a rotating basis each year.
The  CGCL permits a classified board only for corporations with shares listed on
the New York or American Stock Exchanges or qualified for trading on the  Nasdaq
National  Market. 3Com's  Articles of Incorporation  and Bylaws  provide for two
classes of directors elected for staggered two-year terms.

    The DGCL permits,  but does not  require, a classified  board of  directors,
with  staggered terms under which the directors  are elected for terms of two or
three years. This method of electing directors makes a change in the composition
of the board of directors, and a potential change in control of a corporation, a
lengthier and more difficult process. Chipcom's Bylaws provide for the Board  of
Directors  being divided  into three classes--Class  I, Class II  and Class III.
Under this classification scheme, no one class of directors of Chipcom has  more
than  one director  more than  any other  class of  directors. If  a fraction is
contained in  the quotient  arrived  at by  dividing  the authorized  number  of
directors  by three, then if such fraction is one-third, the extra director will
be a  member of  Class  III, unless  otherwise provided  from  time to  time  by
resolution  of the  Chipcom Board.  If such fraction  is two-thirds,  one of the
extra directors will be  a member of  Class III and one  of the extra  directors
will be a member of Class II, unless otherwise provided for from time to time by
resolution of the Board of Directors.

    REMOVAL  OF DIRECTORS.  Under the CGCL,  any director or the entire board of
directors may be removed, with or without cause, with the approval of a majority
of the outstanding shares entitled to vote; however, no director may be  removed
(unless  the entire board is removed) if  the number of shares voted against the
removal would be sufficient to elect the director under cumulative voting.

    Under the DGCL, any director or the entire board of directors of a  Delaware
corporation  with a classified board of directors may only be removed with cause
unless the certificate of  incorporation provides otherwise. Chipcom's  Restated
Certificate  of Incorporation provides that directors  may be removed with cause
by a  vote of  a majority  of  the outstanding  shares entitled  to vote  at  an
election  of directors, except  that the directors  elected by the  holders of a
particular or series of stock may be removed with cause by a vote of the holders
of a majority of the outstanding shares of such class or series.

    ACTIONS BY  WRITTEN  CONSENT  OF  STOCKHOLDERS.    Under  the  CGCL,  unless
otherwise  provided in  the articles of  incorporation, any action  which may be
taken at any annual or special meeting  or shareholders, may be taken without  a
meeting by written consent of shareholders having the requisite number of votes,
subject  to the  requirement that ten  days' advance notice  of such shareholder
approval of  certain  types of  transactions  and  matters be  given  where  all
shareholders'  consents are not  solicited. 3Com's Articles  of Incorporation do
not limit the rights of shareholders to act by written consent.

    Under the DGCL,  stockholders may execute  an action by  written consent  in
lieu  of a meeting of stockholders. The  DGCL permits a corporation to eliminate
such actions by written consent  in its certificate of incorporation.  Chipcom's
Restated  Certificate of Incorporation limits the  rights of stockholders to act
by written consent.

    ADVANCE  NOTICE   REQUIREMENT  FOR   SHAREHOLDER  PROPOSALS   AND   DIRECTOR
NOMINATIONS.  3Com's Bylaws provide that no matter proposed by 3Com shareholders
will  be considered at  an annual meeting or  special shareholder meeting unless
(1) it is specified  in the notice of  meeting, (2) it is  brought by or at  the
direction  of the  Board of Directors  or (3)  written notice of  such matter is
provided to 3Com no  later than the  date on which  shareholder proposals to  be
included  in the 3Com proxy statement  must be received under federal securities
laws. Neither Chipcom's  Restated Certificate  of Incorporation  nor its  Bylaws
expressly address advance notice of stockholder proposals.

                                       81
<PAGE>
    VOTING   REQUIREMENTS.     Unless  otherwise   specified  in   a  California
corporation's articles  of  incorporation,  an  amendment  to  the  articles  of
incorporation  requires the  affirmative vote of  a majority  of the outstanding
shares entitled to vote thereon. Under the CGCL, the holders of the  outstanding
shares  of a  class are entitled  to vote as  a class if  the proposed amendment
would (i) increase or decrease the aggregate number of authorized shares of such
class, (ii) effect an exchange, reclassification or cancellation of all or  part
of the shares of such class, other than a stock split, (iii) effect an exchange,
or  create a right  of exchange, of all  or part of the  shares of another class
into the shares of such class,  (iv) change the rights, preferences,  privileges
or  restrictions of the shares  of such class, (v) create  a new class of shares
having rights, preferences or privileges prior  to the shares of such class,  or
increase  the  rights, preferences  or privileges  or  the number  of authorized
shares having rights,  preferences or  privileges prior  to the  shares of  such
class, (vi) in the case of preferred shares, divide the shares of any class into
series  having  different  rights, preferences,  privileges  or  restrictions or
authorize the board of directors to do so, and (vii) cancel or otherwise  affect
dividends on the shares of such class which have accrued but have not been paid.

    Unless  otherwise  specified  in  a  Delaware  corporation's  certificate of
incorporation, an amendment  to the  certificate of  incorporation requires  the
affirmative  vote  of  a majority  of  the  outstanding stock  entitled  to vote
thereon. Furthermore, under the DGCL, the holders of the outstanding shares of a
class are  entitled to  vote  as a  class upon  any  proposed amendment  to  the
certificate  of incorporation,  whether or not  entitled to vote  thereon by the
provisions of the corporation's certificate  of incorporation, if the  amendment
would  increase or  decrease the aggregate  number of authorized  shares of such
class, increase or decrease the par value of the shares of such class, or  alter
or  change the powers, preferences or special rights of the shares of such class
so as to adversely affect them.

    Under both  the DGCL  and the  CGCL, with  certain exceptions,  any  merger,
consolidation or sale of all or substantially all of a corporation's assets must
be  approved  by the  corporation's board  of  directors and  a majority  of the
outstanding shares entitled to  vote. In addition, the  CGCL, but not the  DGCL,
requires  such transactions, among others,  to be approved by  a majority of the
outstanding shares of  each class  of stock  (without regard  to limitations  on
voting  rights). Under 3Com's Articles of Incorporation, "business combinations"
which do not meet certain conditions set forth in the Articles of Incorporation,
such as  approval  of  the  transaction by  a  majority  of  the  "disinterested
directors"  who are not employees  or officers of 3Com,  must be approved by the
holders of 66 2/3 percent of the voting shares of 3Com.

    Approval of  shareholders holding  at least  66 2/3  percent of  the  voting
shares  of 3Com is  required to amend  those provisions of  the 3Com Articles of
Incorporation addressing business combinations  and those provisions  addressing
amendment of the Articles of Incorporation. Under Chipcom's Restated Certificate
of  Incorporation, the affirmative vote of the  holders of 66 2/3 percent of the
votes which all the stockholders would be entitled to cast is required to  amend
certain  provisions addressing  amendment of  Chipcom's Restated  Certificate of
Incorporation. The effect of such supermajority voting provisions is to make any
of these changes more difficult.

    RIGHTS OF DISSENTING STOCKHOLDERS.  Generally, shareholders of a  California
corporation  who dissent from  a merger or consolidation  of the corporation are
entitled to dissenters' rights.

    Generally, stockholders of a Delaware corporation who dissent from a  merger
of  consolidation of the corporation for  which a stockholders' vote is required
are entitled  to  appraisal  rights,  requiring  the  surviving  corporation  to
purchase  the dissenting shares at fair  value. There are, however, no statutory
rights of appraisal with respect to stockholders of a Delaware corporation whose
shares of  stock are  either (i)  listed on  a national  securities exchange  or
designated  as a  national market  system security  on an  interdealer quotation
system by the National Association of  Securities Dealers, Inc. or (ii) held  of
record  by more  than 2,000  stockholders where  such stockholders  receive only
shares of stock  of the corporation  surviving or resulting  from the merger  or
consolidation (or cash in lieu of fractional interests therein).

                                       82
<PAGE>
    INSPECTION  OF STOCKHOLDERS  LIST.   Both the  CGCL and  the DGCL  allow any
stockholder to inspect the stockholders list for a purpose reasonably related to
such person's interest as a stockholder. Additionally, the CGCL provides for  an
absolute  right to  inspect and  copy the  corporation's shareholders  list by a
person or persons  holding at  least 5% in  the aggregate  of the  corporation's
outstanding voting shares, or any shareholder or shareholders holding 1% or more
of such shares who have filed a Schedule 14B with the Commission relating to the
election  of directors. The DGCL does not provide for any such absolute right of
inspection.

    DIVIDENDS.  The CGCL provides that a corporation may make a distribution  to
its  shareholders if: (i)  the retained earnings  of the corporation immediately
prior to  the  distribution  equals  or  exceeds  the  amount  of  the  proposed
distribution;  (ii) immediately after giving effect  to the distribution (a) the
sum of  the  assets  of  the corporation  (exclusive  of  goodwill,  capitalized
research  and development expenses and deferred charges) would be at least equal
to 1/4 times its liabilities (not including deferred taxes, deferred income  and
other  deferred credits), and (b) the current assets of the corporation would be
at least equal to its current liabilities or, if the average of the earnings  of
the  corporation before taxes on income and  before interest expense for the two
preceding fiscal years was less than the average of the interest expense of  the
corporation  for such  fiscal years,  at least  equal to  1/4 times  its current
liabilities; and (iii) the corporation making  the distribution is not, or as  a
result  of  the distribution  would  not be,  likely to  be  unable to  meet its
liabilities (except those whose payment is otherwise adequately provided for) as
they mature. Neither 3Com's Articles of Incorporation nor its Bylaws contain any
presently applicable restrictions on the declaration or payment of dividends.

    Subject to  any restrictions  contained in  a corporation's  certificate  of
incorporation,  the DGCL generally  provides that a  corporation may declare and
pay dividends out of  surplus (defined as net  assets minus stated capital)  or,
when  no surplus  exists, out of  net profits for  the fiscal year  in which the
dividend is declared and/or for the preceding fiscal year. Dividends may not  be
paid  out of  net profits  if the capital  of the  corporation is  less than the
amount of capital represented by the issued and outstanding stock of all classes
having a preference upon  the distribution of  assets. Under Chipcom's  Restated
Certificate  of Incorporation dividends  may be paid on  Chipcom Common Stock as
and when determined by  the Chipcom Board subject  to any preferential  dividend
rights of any then outstanding preferred stock.

    BYLAWS.   Under the CGCL, a corporation's  Bylaws may be adopted, amended or
repealed  either  by  the  board  of  directors  or  the  shareholders  of   the
corporation.  3Com's Bylaws provide that the Bylaws may be changed either by the
vote of the holders of a majority of the outstanding shares entitled to vote  or
by the board of directors (subject to the shareholders' ability to adopt a Bylaw
provision restricting or eliminating the Board's power to adopt, amend or repeal
Bylaws);  provided, however, that the Board may not amend the Bylaws in order to
change a fixed  number of directors  (except to alter  the authorized number  of
directors  within the existing range of a minimum of four and a maximum of seven
directors) or to change from a fixed to a variable board of vice versa. A  Bylaw
adopted  by the shareholders may restrict or eliminate the power of the Board to
adopt, amend or repeal the Bylaws. 3Com's Bylaws may be amended by holders of  a
majority of voting shares entitled to vote or by a majority of the directors.

    Under  the DGCL, the  authority to adopt,  amend, or repeal  the bylaws of a
Delaware corporation  is  held  exclusively  by  the  stockholders  unless  such
authority  is  conferred  upon  the  board  of  directors  in  the corporation's
certificate of  incorporation.  Chipcom's  Bylaws may  be  altered,  amended  or
repealed  or new bylaws may be adopted by the affirmative vote of the holders of
a majority of the shares of the capital stock of Chipcom issued and  outstanding
and  entitled to vote at any regular  meeting of stockholders, or at any special
meeting of stockholders, provided that notice of such alteration is given in the
notice of such  meeting. Notwithstanding  the foregoing,  altering, amending  or
repealing  bylaws relating to the size of  the Board of Directors of Chipcom and
amendments adopted by the  stockholders of Chipcom may  only be accomplished  by
the affirmative vote of the holders of 66 2/3

                                       83
<PAGE>
percent  of the shares  of capital stock  of Chipcom issued  and outstanding and
entitled to  vote at  any regular  meeting of  stockholders, or  at any  special
meeting of stockholders, provided that notice of such alteration is given in the
notice for such meeting.

    PREEMPTIVE  RIGHTS.   Shareholders  of  a California  corporation  have such
preemptive  rights  as  may  be  provided  in  the  corporation's  articles   of
incorporation. 3Com's Articles of Incorporation do not expressly provide for the
grant of any preemptive rights to 3Com shareholders.

    Stockholders  of a Delaware corporation have  only such preemptive rights as
may  be  provided  in  its  certificate  of  incorporation.  Chipcom's  Restated
Certificate  of  Incorporation  does  not grant  any  preemptive  rights  to its
stockholders.

    TRANSACTIONS INVOLVING OFFICERS OR DIRECTORS.   Under the CGCL, any loan  or
guarantee  to or for the benefit of a  director or officer of the corporation or
its subsidiaries  requires approval  of  the shareholders  unless such  loan  or
guarantee  is  provided  for under  a  plan  approved by  shareholders  owning a
majority of the  outstanding shares of  the corporation. In  addition, the  CGCL
permits shareholders of a corporation with 100 or more shareholders of record to
approve  a bylaw authorizing the  board of directors alone  to approve a loan or
guarantee to or on behalf of an officer (whether or not a director) if the board
determines that such a loan or  guarantee may reasonably be expected to  benefit
the corporation. 3Com's Bylaws allow its Board of Directors to authorize 3Com to
make  a loan to  or guarantee the  obligation of any  officer of the corporation
without obtaining shareholder approval, provided that the Board determines  such
action  may reasonably be expected to benefit  the corporation and the number of
shareholders of record on the date of approval is at least 100.

    The CGCL also states  that contracts or  transactions between a  corporation
and (i) any of its directors or (ii) a second corporation of which a director is
also  a  director are  not void  or voidable  if  the material  facts as  to the
transaction and  as to  the  directors' interest  are  fully disclosed  and  the
disinterested   directors  or  a  majority  of  the  disinterested  shareholders
represented and voting at a duly held meeting approve or ratify the  transaction
in  good  faith,  or  the  person asserting  the  validity  of  the  contract or
transaction sustains the burden of proving that the contract or transaction  was
just  and  reasonable as  to  the corporation  at  the time  it  was authorized,
approved or ratified.

    A Delaware  corporation  may lend  money  to, or  guarantee  any  obligation
incurred  by, its  officers or  directors if,  in the  judgment of  the board of
directors, such loan  or guarantee  may reasonably  be expected  to benefit  the
corporation.  With  respect to  any other  contract  or transaction  between the
corporation and one or more of its directors of officers, such transactions  are
neither  void nor voidable if either (i) the director's or officer's interest is
made  known  to  the  disinterested   directors  or  the  stockholders  of   the
corporation,  who thereafter approve the transaction  in good faith, or (ii) the
contract or transaction is fair to the corporation as of the time it is approved
or ratified  by either  the board  of  directors, a  committee thereof,  or  the
stockholders.

    FILLING VACANCIES ON THE BOARD OF DIRECTORS.  Under the CGCL, any vacancy on
the  board of directors other  than one created by removal  of a director may be
filled by the  board of directors.  If the number  of directors is  less than  a
quorum,  a  vacancy  may be  filled  by  the unanimous  written  consent  of the
directors then in office, by the affirmative vote of a majority of the directors
at a meeting held pursuant to notice or waivers of notice or by a sole remaining
director. A vacancy created by removal of a director may be filled by the  board
of  directors only if so authorized by a corporation's articles of incorporation
or by a bylaw approved by  the corporation's shareholders. 3Com's Bylaws do  not
authorize its Board to fill such a vacancy.

    Under  the  DGCL, vacancies  on  the board  of  directors and  newly created
directorships may be filed by a majority  of the directors then in office  (even
through  less than a quorum) unless (i) otherwise provided in the certificate of
incorporation or bylaws  of the corporation  (Chipcom's Restated Certificate  of
Incorporation  and Bylaws do  not provide otherwise) or  (ii) the certificate of
incorporation directs that  a particular  class is  to elect  such director,  in
which  case  any other  directors elected  by  such class,  or a  sole remaining
director, shall fill such vacancy.

                                       84
<PAGE>
    LIMITATIONS OF LIABILITY OF  DIRECTORS.  Under the  CGCL, (i) a  corporation
has  the power  to indemnify a  director against expenses,  judgments, fines and
settlements if  that person  acts  in good  faith and  in  a manner  the  person
reasonably  believed to be in the best  interests of the corporation and, in the
case of a criminal proceeding, had no reasonable cause to believe the conduct of
the person was unlawful, and (ii) a corporation has the power to indemnify, with
certain exceptions, any person who is a party  to any action by or in the  right
of  the corporation, against  expenses actually and  reasonably incurred by that
person in connection with the defense or settlement of the action if the  person
acted  in good  faith and  in a  manner the  person believed  to be  in the best
interests  of  the  corporation   and  its  shareholders.  The   indemnification
authorized  by  the CGCL  is  not exclusive,  and  a corporation  may  grant its
directors, officers,  employees or  other agents  certain additional  rights  to
indemnification.  3Com's  Articles  of  Incorporation  provide  that  3Com shall
indemnify any person to the full extent permitted by the California  Corporation
Code  in connection  with claims arising  by reason  of that person  acting as a
director, officer  or  agent of  3Com.  The Board  of  Directors of  3Com  shall
determine  whether such  person has  met the  applicable standard  of conduct to
establish indemnification under the standards set by the California Corporations
Code. If the Board of Directors find that the person has not met this  standard,
the issue will be brought to a shareholder vote.

    Under   the  DGCL,  a   corporation  may  include   in  its  certificate  of
incorporation a  provision which  would, subject  to the  limitations  described
below,  eliminate or limit directors' liability for monetary damage for breaches
of their fiduciary duty of care.  Under the DGCL, a director's liability  cannot
be  eliminated or limited (i) for breaches of  duty of loyalty, (ii) for acts or
omissions not in good faith or which involve intentional misconduct or a knowing
violation of law, (iii) for the payment of unlawful dividends or expenditure  of
funds for unlawful stock purchases or redemptions, or (iv) for transactions from
which  such director  derived an  improper personal  benefit. Chipcom's Restated
Certificate of Incorporation provides that Chipcom will indemnify any person  in
connection  with any threatened, pending or completed action, suit or proceeding
by reason of the fact that person is  or was or has agreed to become a  director
or  officer of Chipcom,  or is or  was serving, or  has agreed to  serve, at the
request of Chipcom as a director, officer or trustee of Chipcom or in a  similar
capacity.

    BUSINESS COMBINATIONS/REORGANIZATIONS.  The CGCL provides that, except where
the fairness of the terms and conditions of the transaction has been approved by
the  California Commissioner of Corporations and except in a "short-form" merger
(the merger of a parent corporation with  a subsidiary in which the parent  owns
at least 90% of the outstanding shares of each class of the subsidiary's stock),
if  the  surviving  corporation  or its  parent  corporation  owns,  directly or
indirectly, shares of the target corporation  representing more than 50% of  the
voting  power of the  target corporation prior to  the merger, the nonredeemable
common stock of a  target corporation may be  converted only into  nonredeemable
common  stock of the surviving corporation or its parent corporation, unless all
of the shareholders of  the class consent.  The effect of  this provision is  to
prohibit  a cash-out merger of minority  shareholders, except where the majority
shareholder already  owns  90%  or  more  of the  voting  power  of  the  target
corporation  and could, therefore, effect a short-form merger to accomplish such
a cash-out of minority shareholders.

    In addition, the CGCL requires that, in connection with certain transactions
between a corporation whose shares are held of record by 100 or more persons and
an "interested party," such interested party  must deliver a written opinion  as
to  the fairness of the consideration to the shareholders of the corporation. An
"interested party" for purposes of this CGCL  provision means a person who is  a
party   to  the  transaction  and  (i)   directly  or  indirectly  controls  the
corporation, (ii) is an officer or director  of the corporation, or (iii) is  an
entity  in  which a  material  financial interest  is  held by  any  director or
executive officer of the corporation.

    A provision of the  DGCL prohibits certain  transactions between a  Delaware
corporation and an "interested stockholder." For purposes of this DGCL provision
an  "interested stockholder" is  a stockholder that is  directly or indirectly a
beneficial owner of 15% or  more of the voting  power of the outstanding  voting
stock  of a Delaware corporation (or its affiliate or associate). This provision
prohibits certain business combinations between an interested stockholder and  a
corporation for a

                                       85
<PAGE>
period  of three  years after the  date the interested  stockholder acquired its
stock, unless  (i) the  business combination  is approved  by the  corporation's
board  of directors  prior to  the stock  acquisition date;  (ii) the interested
stockholder acquired at least 85% of the voting stock of the corporation in  the
transaction  in which he became an interested stockholder; or (iii) the business
combination is  approved  by  a majority  of  the  board of  directors  and  the
affirmative vote of two-thirds of disinterested stockholders.

    SHAREHOLDER DERIVATIVE SUITS.  The CGCL provides that a shareholder bringing
a  derivative  action  on  behalf  of  the  corporation  need  not  have  been a
shareholder at the time  of the transaction in  question, provided that  certain
tests  are met. Under the DGCL, a stockholder may only bring a derivative action
on behalf  of  the corporation  if  the stockholder  was  a stockholder  of  the
corporation  at the  time of  the transaction  in question  or his  or her stock
thereafter devolved upon him or her by operation of law. The CGCL also  provides
that  the corporation or the defendant in a derivative suit may make a motion to
the court for an order requiring the plaintiff shareholder to furnish a security
bond. Delaware does not have a similar bonding requirement.

    SHAREHOLDER RIGHTS  PLAN.    The  Board  of  Directors  of  3Com  adopted  a
Shareholder  Rights Plan in  September 1989, as amended  in December 1994, which
provides for distribution  of rights to  holders of outstanding  shares of  3Com
Common  Stock. The  Board of Directors  of Chipcom adopted  a Stockholder Rights
Plan in August  1995, which provides  for distribution of  rights to holders  of
outstanding  shares of  Chipcom Common Stock.  See "Description  of 3Com Capital
Stock -- Rights Plan" and "Information Concerning Chipcom -- Chipcom Stockholder
Rights Plan."
                            ------------------------

    The foregoing summary  does not purport  to be a  complete statement of  the
rights of holders of 3Com Common Stock and Chipcom Common Stock and is qualified
in its entirety by reference to the CGCL and the DGCL and the respective charter
documents of 3Com and Chipcom.

                       DESCRIPTION OF 3COM CAPITAL STOCK

    The  authorized  capital stock  of 3Com  consists  of 400,000,000  shares of
Common Stock, no  par value,  and 3,000,000 shares  of Preferred  Stock, no  par
value.

COMMON STOCK

    As  of July  31, 1995, there  were approximately 145,346,442  shares of 3Com
Common Stock outstanding held of record by approximately 1,500 shareholders.

    Subject to preferences that may  be applicable to any outstanding  Preferred
Stock,  holders  of  3Com Common  Stock  are  entitled to  receive  ratably such
dividends as may  be declared by  the Board  of Directors out  of funds  legally
available  therefor. 3Com has not  paid any cash dividends  on its Common Stock.
Each holder of 3Com Common Stock is entitled to one vote for each share held  of
record  by him or her and may not  cumulate votes for the election of directors.
In the event of  a liquidation, dissolution  or winding up  of 3Com, holders  of
3Com  Common Stock are entitled  to share ratably in  all assets remaining after
payment of  liabilities  and  the  liquidation  preference  of  any  outstanding
Preferred Stock. Holders of 3Com Common Stock have no preemptive rights and have
no  rights to convert their Common Stock into any other securities and there are
no redemption provisions  with respect to  such shares. All  of the  outstanding
shares of 3Com Common Stock are fully paid and non-assessable.

    The  transfer agent  for 3Com  Common Stock  is The  First National  Bank of
Boston.

CERTAIN CHARTER PROVISIONS

    3Com's Articles of Incorporation and Bylaws contain certain provisions  that
could  have the effect of delaying, deferring  or preventing a change in control
of 3Com. These include the following:  (i) a provision classifying the Board  of
Directors  into two classes; (ii) a  provision permitting the Board of Directors
to consider  factors other  than price  per share  when evaluating  a merger  or
consolidation or certain other types of proposed business combination; and (iii)
a provision providing that a vote of

                                       86
<PAGE>
66  2/3% of all of the outstanding shares of 3Com, and the holders of at least a
majority of the outstanding voting shares  other than shares held by  interested
shareholders, is required to approve certain business combinations.

PREFERRED STOCK

    As  of  July  31,  1995,  there  were  no  shares  of  3Com  Preferred Stock
outstanding. The 3Com Preferred Stock may be issued from time to time in one  or
more  series. 3Com's  Board of Directors  has authority to  fix the designation,
preferences, and rights of each such series and the qualifications,  limitations
and  restrictions thereon and  to increase or  decrease the number  of shares of
such  series  (but  not  below  the  number  of  shares  of  such  series   then
outstanding), without any further vote or action by the shareholders.

3COM SHAREHOLDER RIGHTS PLAN

    In  September  1989, the  Board  of Directors  of  3Com declared  a dividend
distribution of one Common Stock Purchase Right (each a "Right" and collectively
the "Rights") for each outstanding share of 3Com Common Stock. The  distribution
was  paid as of September  20, 1989, to shareholders of  record on that date and
subsequently to holders of shares issued after that date. On December 13,  1994,
the  Board of Directors  of 3Com approved  the amendment and  restatement of the
agreement specifying the terms of the Rights. Each Right entitles the registered
holder to purchase from 3Com one share of 3Com Common Stock at a purchase  price
of $125 per full share (the "Purchase Price").

    The  description and terms  of the Rights  are set forth  in the Amended and
Restated Rights Agreement dated as of December 21, 1994 (the "Rights Agreement")
between 3Com and The First National Bank of Boston, as the Rights Agent, a  copy
of  which is  attached to 3Com's  Quarterly Report  on Form 10-Q  filed with the
Commission on January 13, 1995. The Rights will expire December 13, 2004, unless
earlier redeemed  or exchanged,  and will  become exercisable  and  transferable
separately  from  the 3Com  Common  Stock only  (i) on  the  earlier of  (A) the
acquisition of, or the public announcement of the intent of any person or  group
to  acquire, without the approval of the  Board of Directors of 3Com, beneficial
ownership of  20% or  more  of the  outstanding  3Com Common  Stock  ("Acquiring
Person"),  or (B) the 10th day (unless extended by the Board prior to the time a
person becomes an Acquiring Person) following the commencement, or  announcement
of  an intention to commence  by any person or group  of persons, a tender offer
which would result in  the offeror owning  20% or more  of the outstanding  3Com
Common  Stock  (the  earlier of  such  dates  being referred  to  as  the "First
Distribution Date") or  (ii) with  respect to any  shares of  3Com Common  Stock
issuable  upon conversion of certain convertible  notes of the Company after the
First Distribution Date, on the day immediately following the date on which such
notes are  converted  into shares  of  Common Stock  (such  date and  the  First
Distribution Date are collectively referred to as the Distribution Date).

    If  3Com or more  than 50% of  its assets is  acquired in a  merger or other
business combination after the Distribution Date,  each holder of a Right  shall
thereafter  have the right to purchase, upon payment of the Purchase Price, such
number of  shares of  common stock  of the  acquiring company  having a  current
market  value equal to twice the Purchase Price. If any person or group acquires
20% or  more of  3Com's Common  Stock, or  if such  20% shareholder  engages  in
certain  self-dealing transactions (as  specified in the  Rights Agreement) with
3Com, each holder of Rights other than such 20% shareholder will have the  right
to  purchase upon  payment of the  then current  Purchase Price, in  lieu of one
share of Common  Stock per outstanding  Right, such number  of shares of  Common
Stock  having a market value  at the time of the  transaction equal to twice the
Purchase Price. After any  of these events,  3Com may also  exchange all or  any
portion  of  the  outstanding  Rights,  other  than  Rights  held  by  such  20%
shareholder, for shares of 3Com Common Stock  at an exchange ratio of one  share
of  Common Stock per Right,  subject to the provisions  of the Rights Agreement.
The Board of  Directors may redeem  the Rights for  $.01 per Right  at any  time
prior  to the  day a person  or group becomes  a 20% shareholder  and in certain
other instances. Additionally, the  exercise price and the  value of stock  that
may  be acquired for that  price are subject to adjustment  from time to time to
prevent dilution.

                                       87
<PAGE>
    The Rights are designed to protect and maximize the value of the outstanding
equity interests in 3Com in the event  of an unsolicited attempt by an  acquiror
to  take  over 3Com  in  a manner  or  on terms  not  approved by  the  Board of
Directors. The  Rights  may have  the  effect  of rendering  more  difficult  or
discouraging  an  acquisition  of  3Com  deemed  undesirable  by  the  Board  of
Directors. The Rights may cause substantial  dilution to a person or group  that
attempts to acquire 3Com on terms or in a manner not approved by 3Com's Board of
Directors,  except pursuant to an offer  conditioned upon the negation, purchase
or redemption of the Rights.

                                 LEGAL MATTERS

    The validity of the shares of 3Com  Common Stock to be issued in  connection
with  the Merger will be  passed upon for 3Com by  Gray Cary Ware & Freidenrich,
Palo Alto, California.

                                    EXPERTS

    The supplemental consolidated  financial statements  of 3Com as  of May  31,
1995  and 1994 and for each of the three  years in the period ended May 31, 1995
included in  this Proxy  Statement/Prospectus have  been audited  by Deloitte  &
Touche LLP, independent auditors, as stated in their report, dated June 28, 1995
(August  25,  1995 as  to  the first  paragraph of  Note  9) (which  includes an
emphasis paragraph relating to the restatement of the supplemental  consolidated
financial  statements for a pooling  of interests subsequent to  the date of the
historical financial  statements),  which is  included  herein, except  for  the
premerger  financial statements of Primary Access as of October 3, 1993, and for
the 53 weeks ended  October 3, 1993  and the 52 weeks  ended September 27,  1992
which  have been  audited by KPMG  Peat Marwick  LLP, as stated  in their report
included herein (which financial statements are included in the fiscal 1994  and
1993  supplemental consolidated financial  statements of 3Com)  and have been so
included in reliance upon the respective reports of such firms given upon  their
authority as experts in accounting and auditing. Both of the foregoing firms are
independent auditors.

    The consolidated financial statements of Chipcom as of December 31, 1994 and
December  25, 1993 and for each of the  three years in the period ended December
31, 1994 incorporated by reference in this Proxy Statement/Prospectus have  been
so  incorporated in reliance on the  report of Price Waterhouse LLP, independent
accountants, given on  the authority  of said firm  as experts  in auditing  and
accounting.

    It  is  expected that  representatives  of Price  Waterhouse  LLP, Chipcom's
independent accountants  will  be present  at  the Chipcom  Special  Meeting  to
respond to appropriate questions of stockholders and to make a statement if they
desire.

                                       88
<PAGE>
                                3COM CORPORATION
            INDEX TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
Supplemental Consolidated Financial Statements:

  Independent Auditors' Report -- Deloitte & Touche LLP....................................................        F-2

  Independent Auditors' Report -- KPMG Peat Marwick LLP....................................................        F-3

  Supplemental Consolidated Statements of Operations for the fiscal years ended May 31, 1995, 1994 and
   1993....................................................................................................        F-4

  Supplemental Consolidated Balance Sheets at May 31, 1995 and 1994........................................        F-5

  Supplemental Consolidated Statements of Shareholders' Equity for the fiscal years ended May 31, 1995,
   1994 and 1993...........................................................................................        F-6

  Supplemental Consolidated Statements of Cash Flows for the fiscal years ended May 31, 1995, 1994 and
   1993....................................................................................................        F-7

  Notes to Supplemental Consolidated Financial Statements..................................................        F-9

Supplemental Quarterly Results of Operations (unaudited)...................................................       F-21
</TABLE>

                                      F-1
<PAGE>
                          INDEPENDENT AUDITORS' REPORT

To the Shareholders and Board of Directors of 3Com Corporation:

    We have audited the accompanying supplemental consolidated balance sheets of
3Com  Corporation and  its subsidiaries  as of  May 31,  1995 and  1994, and the
related  supplemental  consolidated  statements  of  operations,   shareholders'
equity,  and cash flows for each of the three years in the period, ended May 31,
1995. These  supplemental financial  statements are  the responsibility  of  the
Company's  management.  Our responsibility  is to  express  an opinion  on these
supplemental financial statements  based on  our audits.  We did  not audit  the
balance  sheet  of Primary  Access Corporation  as  of October  3, 1993,  or the
related statements of operations, stockholders' equity (deficit), and cash flows
of Primary Access Corporation  for the fifty-three weeks  ended October 3,  1993
and  the fifty-two weeks ended September 27, 1992, which statements are combined
with 3Com Corporation's statements as  of May 31, 1994  and for the years  ended
May  31, 1994 and 1993, and reflect  total assets of $12,897,000, total revenues
of $24,052,000 and $13,798,000, respectively,  and net income of $4,478,000  and
$1,116,000,  respectively. Those statements were audited by other auditors whose
report, dated November 5,  1993, on those statements  has been furnished to  us,
and  our opinion,  insofar as  it relates  to the  amounts included  for Primary
Access Corporation, is based solely on the report of such other auditors.

    We conducted  our  audits in  accordance  with generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence  supporting
the  amounts and disclosures in the financial statements. An audit also includes
assessing the  accounting  principles used  and  significant estimates  made  by
management,  as well as evaluating the overall financial statement presentation.
We believe  that our  audits and  the report  of the  other auditors  provide  a
reasonable basis for our opinion.

    The  supplemental consolidated financial  statements give retroactive effect
to the merger  of 3Com  Corporation and Primary  Access Corporation  on June  9,
1995,  which has been  accounted for as  a pooling of  interests as described in
Notes 1 and 3 to  the supplemental consolidated financial statements.  Generally
accepted accounting principles proscribe giving effect to a consummated business
combination  accounted  for  by the  pooling  of interests  method  in financial
statements that  do  not  include  the date  of  consummation.  These  financial
statements  do not extend  through the date of  consummation, however, they will
become the historical consolidated financial statements of 3Com Corporation  and
subsidiaries after financial statements covering the date of consummation of the
business combination are issued.

    In  our opinion, based on  our audits and the  report of the other auditors,
the accompanying supplemental consolidated financial statements present  fairly,
in  all material  respects, the financial  position of 3Com  Corporation and its
subsidiaries at May 31, 1995 and 1994,  and the results of their operations  and
their cash flows for each of the three years in the period ended May 31, 1995 in
conformity  with  generally  accepted  accounting  principles  applicable  after
financial statements  are  issued  for  a period  which  includes  the  date  of
consummation of the business combination.

/s/ DELOITTE & TOUCHE LLP
------------------------------
DELOITTE & TOUCHE LLP

San Jose, California
June 28, 1995
(August 25, 1995 as to the first paragraph of Note 9)

                                      F-2
<PAGE>
                          INDEPENDENT AUDITORS' REPORT

The Board of Directors and Stockholders
Primary Access Corporation:

    We  have  audited  the  balance sheet  of  Primary  Access  Corporation (the
Company) as  of October  3,  1993, and  the  related statements  of  operations,
stockholders'  equity (deficit), and cash flows  for the fifty-three weeks ended
October 3, 1993 and the fifty-two weeks ended September 27, 1992 (not  presented
herein).  These  financial statements  are the  responsibility of  the Company's
management. Our  responsibility is  to  express an  opinion on  these  financial
statements based on our audits.

    We  conducted  our audits  in  accordance with  generally  accepted auditing
standards. Those standards require that we plan and perform the audit to  obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also  includes
assessing  the  accounting principles  used  and significant  estimates  made by
management, as well as evaluating the overall financial statement  presentation.
We believe that our audits provide a reasonable basis for our opinion.

    In  our opinion, the financial statements  referred to above present fairly,
in all material respects, the  financial position of Primary Access  Corporation
as  of October 3, 1993, and  the related statements of operations, stockholders'
equity (deficit), and cash flows for the fifty-three weeks ended October 3, 1993
and the fifty-two weeks ended September  27, 1992, in conformity with  generally
accepted accounting principles.

                                          /s/ KPMG Peat Marwick LLP

San Diego, California
November 5, 1993

                                      F-3
<PAGE>
                                3COM CORPORATION
               SUPPLEMENTAL CONSOLIDATED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                  FISCAL YEAR ENDED MAY 31,
                                                                           ---------------------------------------
                                                                               1995          1994         1993
                                                                           -------------  -----------  -----------
<S>                                                                        <C>            <C>          <C>
Sales....................................................................  $   1,325,693  $   851,047  $   630,966
Costs and Expenses:
  Cost of sales..........................................................        615,253      415,980      326,985
  Sales and marketing....................................................        259,458      175,972      139,066
  Research and development...............................................        133,687       79,327       66,995
  General and administrative.............................................         54,982       41,865       36,391
  Purchased in-process technology........................................         60,796      134,481           --
  Non-recurring items....................................................          5,000           --        1,316
                                                                           -------------  -----------  -----------
    Total................................................................      1,129,176      847,625      570,753
                                                                           -------------  -----------  -----------
Operating income.........................................................        196,517        3,422       60,213
Gain on sale of investment...............................................             --       17,746           --
Other income -- net......................................................          3,359        3,313        1,200
                                                                           -------------  -----------  -----------
Income before income taxes...............................................        199,876       24,481       61,413
Income tax provision.....................................................         73,877       48,697       21,736
                                                                           -------------  -----------  -----------
Net income (loss)........................................................  $     125,999  $   (24,216) $    39,677
                                                                           -------------  -----------  -----------
                                                                           -------------  -----------  -----------
Net income (loss) per common and equivalent share:
  Primary................................................................  $        0.83  $     (0.19) $      0.30
  Fully-diluted..........................................................  $        0.83  $     (0.19) $      0.30
Common and equivalent shares used in computing per share amount:
  Primary................................................................        151,062      129,620      130,784
  Fully-diluted..........................................................        152,698      129,620      132,872
</TABLE>

          See notes to supplemental consolidated financial statements.

                                      F-4
<PAGE>
                                3COM CORPORATION
                    SUPPLEMENTAL CONSOLIDATED BALANCE SHEETS
                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                                  MAY 31,
                                                                                          ------------------------
                                                                                             1995         1994
                                                                                          -----------  -----------
<S>                                                                                       <C>          <C>
ASSETS
Current Assets:
  Cash and cash equivalents.............................................................  $   149,210  $    69,768
  Temporary cash investments............................................................      184,338       63,413
  Trade receivables, less allowance for doubtful accounts ($16,221 in 1995 and $10,493
   in 1994).............................................................................      199,939      124,843
  Inventories...........................................................................      124,058       73,358
  Deferred income taxes.................................................................       43,922       31,236
  Other.................................................................................       21,868       10,277
                                                                                          -----------  -----------
    Total current assets................................................................      723,335      372,895
Property and equipment--net.............................................................      110,449       68,063
Other assets............................................................................       24,022       16,282
                                                                                          -----------  -----------
Total...................................................................................  $   857,806  $   457,240
                                                                                          -----------  -----------
                                                                                          -----------  -----------

LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
  Accounts payable......................................................................  $    92,750  $    53,155
  Accrued and other liabilities.........................................................      126,124       93,747
  Income taxes payable..................................................................       52,853       19,090
  Current portion of long-term obligations..............................................          197          590
                                                                                          -----------  -----------
    Total current liabilities...........................................................      271,924      166,582
Long-term debt..........................................................................      110,000           --
Other long-term obligations.............................................................        1,094        1,229
Shareholders' Equity:
  Preferred stock, no par value, 3,000,000 shares authorized; none outstanding..........           --           --
  Common stock, no par value, 400,000,000 shares authorized; shares outstanding:
   1995--143,064,572; 1994--134,404,538.................................................      311,075      231,985
  Unamortized restricted stock grants...................................................       (2,037)        (202)
  Retained earnings.....................................................................      165,735       57,951
  Unrealized gain on available-for-sale securities......................................          184           --
  Accumulated translation adjustments...................................................         (169)        (305)
                                                                                          -----------  -----------
    Total shareholders' equity..........................................................      474,788      289,429
                                                                                          -----------  -----------
Total...................................................................................  $   857,806  $   457,240
                                                                                          -----------  -----------
                                                                                          -----------  -----------
</TABLE>

          See notes to supplemental consolidated financial statements.

                                      F-5
<PAGE>
                                3COM CORPORATION
          SUPPLEMENTAL CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                             UNAMORTIZED
                                                             RESTRICTED
                                          COMMON STOCK      STOCK GRANTS               UNREALIZED GAIN    ACCUMULATED
                                      --------------------    AND NOTES    RETAINED   ON AVAILABLE-FOR-   TRANSLATION
                                       SHARES     AMOUNT     RECEIVABLES   EARNINGS    SALE SECURITIES    ADJUSTMENTS     TOTAL
                                      ---------  ---------  -------------  ---------  -----------------  -------------  ---------
<S>                                   <C>        <C>        <C>            <C>        <C>                <C>            <C>
BALANCES, JUNE 1, 1992, AS
 PREVIOUSLY REPORTED................    117,352  $ 129,063    $    (120)   $  71,354      $      --        $   2,128    $ 202,425
Restatement for pooling of
 interests-Primary Access...........      2,184      8,807          (10)      (8,969)                             --         (172)
                                      ---------  ---------  -------------  ---------        -------      -------------  ---------
AS RESTATED.........................    119,536    137,870         (130)      62,385             --            2,128      202,253
Stock issued........................     11,738     22,904                                                                 22,904
Stock warrants buyback..............                (1,300)                                                                (1,300)
Repurchase of common stock..........     (3,544)    (4,300)                   (5,340)                                      (9,640)
Tax benefit from employee stock
 transactions.......................                11,955                                                                 11,955
Cancellation of restricted stock
 grants.............................        (40)      (131)         120                                                       (11)
Pro forma tax provision of pooled
 entity.............................                                           1,604                                        1,604
Equity distributions of a pooled
 entity.............................                                          (5,179)                                      (5,179)
Adjustment to conform fiscal year of
 a pooled entity-Star Tek...........                                           2,163                                        2,163
Accumulated translation
 adjustments........................                                                                          (1,986)      (1,986)
Repayment of notes receivable.......                                  5                                                         5
Net income..........................                                          39,677                                       39,677
                                      ---------  ---------  -------------  ---------        -------      -------------  ---------
BALANCES, MAY 31, 1993..............    127,690    166,998           (5)      95,310             --              142      262,445
Stock issued........................      9,515     22,925         (255)                                                   22,670
Repurchase of common stock..........     (2,800)    (3,501)                  (13,143)                                     (16,644)
Tax benefit from employee stock
 transactions.......................                24,474                                                                 24,474
Amortization of restricted stock
 grants.............................                                 53                                                        53
Stock options assumed in connection
 with acquisitions..................                21,089                                                                 21,089
Accumulated translation
 adjustments........................                                                                            (447)        (447)
Repayment of note receivable........                                  5                                                         5
Net loss............................                                         (24,216)                                     (24,216)
                                      ---------  ---------  -------------  ---------        -------      -------------  ---------
BALANCES, MAY 31, 1994..............    134,405    231,985         (202)      57,951             --             (305)     289,429
Stock issued........................      7,530     33,963       (2,128)                                                   31,835
Repurchase of common stock..........     (1,570)    (2,674)                  (16,916)                                     (19,590)
Tax benefit from employee stock
 transactions.......................                40,306                                                                 40,306
Amortization of restricted stock
 grants.............................                                293                                                       293
Stock options assumed in connection
 with acquisitions..................                 6,508                                                                  6,508
Adjustment to conform pooled entity-
 Sonix..............................      2,416        844                    (2,079)                            (69)      (1,304)
Adjustment to conform fiscal year of
 pooled entity-Primary Access.......        284        143                       780                                          923
Unrealized gain on
 available-for-sale securities......                                                            184                           184
Accumulated translation
 adjustments........................                                                                             205          205
Net income..........................                                         125,999                                      125,999
                                      ---------  ---------  -------------  ---------        -------      -------------  ---------
BALANCES, MAY 31, 1995..............    143,065  $ 311,075    $  (2,037)   $ 165,735      $     184        $    (169)   $ 474,788
                                      ---------  ---------  -------------  ---------        -------      -------------  ---------
                                      ---------  ---------  -------------  ---------        -------      -------------  ---------
</TABLE>

          See notes to supplemental consolidated financial statements.

                                      F-6
<PAGE>
                                3COM CORPORATION
               SUPPLEMENTAL CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                               FISCAL YEAR ENDED MAY 31,
                                                                                           ----------------------------------
                                                                                              1995         1994       1993
                                                                                           -----------  ----------  ---------
<S>                                                                                        <C>          <C>         <C>
Cash flows from operations:
  Net income (loss)......................................................................  $   125,999  $  (24,216) $  39,677
  Adjustments to reconcile net income (loss) to cash
   provided by operations:
    Depreciation and amortization........................................................       47,482      30,922     25,361
    Gain on sale of investment...........................................................           --     (17,746)        --
    Deferred income taxes................................................................      (24,175)     (9,865)    (3,523)
    Purchased in-process technology......................................................       60,796     134,481         --
    Adjustment to conform fiscal year of pooled entity...................................        3,013          --      2,163
    Pro forma provision for income taxes.................................................           --          --      1,604
    Non-cash restructuring costs.........................................................       (1,100)         --     (3,346)
    Changes in assets and liabilities net of effects of acquisitions:
      Trade receivables..................................................................      (73,067)    (33,779)   (22,904)
      Inventories........................................................................      (50,190)      1,019    (20,055)
      Other current assets...............................................................      (11,045)      6,160     (3,889)
      Accounts payable...................................................................       37,556       9,556     11,573
      Accrued and other liabilities......................................................       39,747      (1,185)     6,902
      Income taxes payable...............................................................       73,821      34,927     17,618
                                                                                           -----------  ----------  ---------
Net cash provided by operations..........................................................      228,837     130,274     51,181
                                                                                           -----------  ----------  ---------
Cash flows from investment activities:
  Proceeds from sale of investment.......................................................           --      18,066         --
  Purchase of property and equipment.....................................................      (77,817)    (36,938)   (22,534)
  Purchase of temporary cash investments.................................................     (183,232)    (76,841)   (72,962)
  Proceeds from temporary cash investments...............................................       60,585      90,612     40,496
  Acquisition of businesses and related purchase-price adjustment........................      (65,832)    (98,128)     2,946
  Other -- net...........................................................................        4,007      (3,020)       907
                                                                                           -----------  ----------  ---------
Net cash used for investment activities..................................................     (262,289)   (106,249)   (51,147)
                                                                                           -----------  ----------  ---------
Cash flows from financing activities:
  Sale of stock..........................................................................       28,155      22,670     22,397
  Repurchase of common stock.............................................................      (19,590)    (16,644)    (9,640)
  Repurchase of stock warrants...........................................................           --          --     (1,300)
  Net proceeds from issuance of convertible debt.........................................      107,330          --         --
  Notes payable..........................................................................           --          --      3,326
  Repayments of notes payable and capital lease obligations..............................       (3,206)     (2,287)      (750)
  Equity distributions of pooled entity..................................................           --          --     (5,179)
  Other -- net...........................................................................          205        (448)    (1,867)
                                                                                           -----------  ----------  ---------
Net cash provided by financing activities................................................      112,894       3,291      6,987
                                                                                           -----------  ----------  ---------
Increase in cash and cash equivalents....................................................       79,442      27,316      7,021
                                                                                           -----------  ----------  ---------
Cash and cash equivalents at beginning of year...........................................       69,768      42,452     35,431
                                                                                           -----------  ----------  ---------
Cash and cash equivalents at end of year.................................................  $   149,210  $   69,768  $  42,452
                                                                                           -----------  ----------  ---------
                                                                                           -----------  ----------  ---------
</TABLE>

                                      F-7
<PAGE>
                                3COM CORPORATION
         SUPPLEMENTAL CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)
                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                               FISCAL YEAR ENDED MAY 31,
                                                                                           ----------------------------------
                                                                                              1995         1994       1993
                                                                                           -----------  ----------  ---------
<S>                                                                                        <C>          <C>         <C>
Other cash flow information:
  Interest paid..........................................................................  $     5,526  $      165  $     418
  Income taxes paid......................................................................       25,039      22,169      5,910
  Non-cash investing and financing activities:
    Tax benefit on stock option transactions.............................................       40,306      24,474     11,955
    Stock issued and options assumed in business acquisitions............................       10,118      21,089         --
</TABLE>

    In  connection with the  purchase acquisitions in fiscal  1995 (see Note 3),
the Company paid  cash, net  of cash acquired,  of $51.6  million, and  recorded
non-cash  value of  stock issued  and options assumed  of $3.7  million and $6.5
million, respectively. The fair  value of assets  acquired, excluding the  $60.8
million purchased in-process technology charged to operations, was $4.3 million,
and liabilities of $2.6 million were assumed. In connection with the acquisition
of Centrum in fiscal 1994 (see Note 3), the Company made a final payment in cash
of $14.3 million in fiscal 1995.

    In connection with the acquisitions in fiscal 1994 (see Note 3), the Company
paid  cash, net of cash acquired, of $98.1 million plus $14.3 million payable in
August 1994, and recorded  non-cash value of options  assumed of $21.1  million.
The  fair  value  of assets  acquired,  excluding the  $132.1  million purchased
in-process technology charged to operations, was $35.6 million, and  liabilities
of $11.3 million were assumed.

          See notes to supplemental consolidated financial statements.

                                      F-8
<PAGE>
                                3COM CORPORATION
            NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1: DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION

    DESCRIPTION OF BUSINESS

    Founded in 1979, 3Com Corporation pioneered the data networking industry and
is  committed to providing  customers global access  to information. Today, 3Com
offers a broad range of  ISO 9000-compliant global data networking  connectivity
solutions which include routers, hubs, remote access servers, switches, adapters
and  network management for Ethernet, Token Ring, FDDI, ATM and other high-speed
data networks.  Headquartered in  Santa Clara,  California, 3Com  has  worldwide
research   and   development,  manufacturing,   marketing,  sales   and  support
capabilities.

    BASIS OF PRESENTATION

    The supplemental consolidated financial  statements of 3Com Corporation  and
subsidiaries  (the Company) have been prepared to give retroactive effect to the
merger with  Primary Access  Corporation  on June  9, 1995.  Generally  accepted
accounting   principles  proscribe  giving  effect  to  a  consummated  business
combination accounted  for  by the  pooling  of interests  method  in  financial
statements  that  do  not  include the  date  of  consummation.  These financial
statements do not extend  through the date of  consummation, however, they  will
become  the historical  consolidated financial  statements of  the Company after
financial  statements  covering  the  date  of  consummation  of  the   business
combination are issued.

NOTE 2: SIGNIFICANT ACCOUNTING POLICIES
    PRINCIPLES  OF CONSOLIDATION. The  consolidated financial statements include
the  accounts  of  3Com  Corporation  and  its  wholly-owned  subsidiaries.  All
significant   intercompany   balances   and  transactions   are   eliminated  in
consolidation.

    CASH EQUIVALENTS are highly liquid debt investments acquired with a maturity
of three months or less.

    TEMPORARY CASH INVESTMENTS consist  of short-term investments acquired  with
maturities  exceeding three months. Effective June  1, 1994, the Company adopted
Statement of  Financial Accounting  Standards (SFAS)  No. 115,  "Accounting  for
Certain  Investments in Debt and Equity Securities." This statement requires the
Company to classify debt  and equity securities  with readily determinable  fair
values  as  "held-to-maturity," "available-for-sale"  or "trading".  Adoption of
SFAS 115 did not have a  significant effect on the Company's financial  position
or  results of operations. While the Company's intent is to hold debt securities
to maturity,  the  Company has  classified  all securities  held  as  available-
for-sale  securities as  the sale  of such securities  may be  required prior to
maturity to implement  management strategies.  Such securities  are reported  at
fair  value with unrealized gains or  losses excluded from earnings and reported
as a separate component of shareholders' equity, net of applicable taxes.  Prior
to the adoption of SFAS 115, all investment securities were carried at amortized
cost.

    CONCENTRATION  OF  CREDIT RISK  AND MAJOR  CUSTOMER.   Financial instruments
which potentially subject the Company  to concentrations of credit risk  consist
principally  of  investments  and  trade  receivables.  The  Company  invests in
instruments with an investment credit rating of AA and better. The Company  also
places  its  investments  for  safekeeping  with  high-credit-quality  financial
institutions. Credit  risk  with  respect  to  trade  receivables  is  generally
diversified  due  to  the  large number  of  entities  comprising  the Company's
customer  base  and  their  dispersion  across  many  different  industries  and
geographies.   The  Company   often  sells  its   products  through  third-party
distributors, and, as a result, may maintain individually significant receivable
balances  with  major  distributors.  The  Company  believes  that  its   credit
evaluation,  approval and monitoring  processes substantially mitigate potential
credit risks.

                                      F-9
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 2: SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    In  fiscal  1995,  the  Company   had  one  customer  which  accounted   for
approximately  11 percent of total sales. The Company did not have any customers
which individually accounted for more than  10 percent of total sales in  fiscal
1994 and 1993, respectively.

    INVENTORIES  are stated  at the lower  of standard  cost (which approximates
first-in, first-out cost) or market.

    PROPERTY AND EQUIPMENT is stated at cost. Equipment under capital leases  is
stated  at the lower  of fair market value  or the present  value of the minimum
lease payments at the inception of the lease.

    PURCHASED TECHNOLOGY is included in other  assets and is amortized over  2-4
years.

    DEPRECIATION AND AMORTIZATION are computed over the shorter of the estimated
useful  lives, lease  terms, or  terms of  license agreements  of the respective
assets, on a straight-line  basis -- generally 2-7  years, except for  buildings
which are at 25 years.

    REVENUE  RECOGNITION.   The Company  recognizes revenue  and accrues related
product return reserves,  warranty and  royalty expenses upon  shipment. At  the
time  of sale,  no material vendor  or post-contract  support obligations remain
outstanding, except as provided by separate service agreement, and collection of
the resulting  receivable  is  probable. Service  and  subscription  revenue  is
recognized  over the contract  term. The Company  extends limited product return
and price protection rights to  certain distributors and resellers. Such  rights
are  generally  limited to  a  certain percentage  of  sales over  a three-month
period. Historically,  actual amounts  recorded for  product returns  and  price
protection  have not  varied significantly  from estimated  amounts. The Company
warrants products for periods  which range from 90  days to life depending  upon
the product.

    FOREIGN  CURRENCY  TRANSLATIONS.    For foreign  operations  with  the local
currency as the functional  currency, assets and  liabilities are translated  at
year-end  exchange rates,  and statements  of operations  are translated  at the
average exchange rates during the year.  Gains or losses resulting from  foreign
currency  translation are accumulated  as a separate  component of shareholders'
equity.

    For foreign  operations with  the U.S.  dollar as  the functional  currency,
assets  and liabilities are translated at the year-end exchange rates except for
inventories, prepaid expenses, and property and equipment, which are  translated
at  historical exchange  rates. Statements of  operations are  translated at the
average exchange rates  during the  year except  for those  expenses related  to
balance sheet amounts that are translated using historical exchange rates. Gains
or  losses resulting  from foreign  currency translation  are included  in other
income -- net in the statements of  operations and were not significant for  any
of the years presented.

    NET  INCOME (LOSS)  PER COMMON  AND EQUIVALENT  SHARE is  computed using the
weighted average number of common  and common equivalent shares outstanding  and
the  dilutive effects  of stock  options, using  the treasury  stock method. The
effect of the assumed  conversion of the  10.25% convertible subordinated  notes
was  antidilutive for the periods presented.  All applicable share and per share
data in these  financial statements  have been restated  to give  effect to  the
stock splits (see Note 9).

    RECLASSIFICATIONS.   Certain  prior year  amounts have  been reclassified to
conform to the current year presentation.

NOTE 3: BUSINESS COMBINATIONS

    FOR THE YEAR ENDED MAY 31, 1995.  On October 18, 1994, the Company  acquired
substantially  all the assets  and assumed substantially  all the liabilities of
NiceCom, Ltd. (NiceCom), and assumed all outstanding NiceCom stock options.  The
purchase  price consisted  of approximately $53.2  million which  was paid using
funds from  the Company's  working  capital and  the issuance  of  approximately

                                      F-10
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 3: BUSINESS COMBINATIONS (CONTINUED)
186,000  shares of common stock of the  Company, with an aggregate value of $3.7
million. In addition, the Company assumed stock options with an associated value
of $5.7 million. NiceCom is engaged in the development of asynchronous  transfer
mode  (ATM) switches and an Ethernet-to-ATM solution to provide a migration path
from existing Ethernet LANs to ATM networking.

    On October 14, 1994, the Company acquired all of the outstanding shares  and
assumed all outstanding stock options of a company engaged in the development of
network  adapter technology. The purchase  price consisted of approximately $2.3
million in cash plus the assumption of stock options with an associated value of
approximately $400,000.  The  purchase  price  was paid  using  funds  from  the
Company's working capital.

    The  acquisitions  were accounted  for  as purchases  and,  accordingly, the
acquired assets and  liabilities were  recorded at their  estimated fair  market
values  at  the dates  of acquisitions.  The aggregate  purchase price  of $61.6
million, plus $2.0 million of costs  directly attributable to the completion  of
the  acquisitions, has  been allocated to  the assets  and liabilities acquired.
Approximately $60.8 million of the total purchase price represented the value of
in-process technology that had not yet reached technological feasibility and had
no alternative future  use and was  charged to the  Company's operations in  the
second quarter of fiscal 1995.

    On  February 28,  1995, the  Company acquired  AccessWorks Communications, a
company involved in developing, manufacturing and marketing Integrated  Services
Digital  Network (ISDN) transmission products. The acquisition was accounted for
as a  purchase.  The purchase  price  and  costs directly  attributable  to  the
completion of the acquisition were not significant.

    The  Company's  consolidated  results of  operations  include  the operating
results of  the  acquired companies  from  their acquisition  dates.  Pro  forma
results  of operations of 3Com and the aforementioned acquired companies for the
periods prior to  the acquisitions are  not presented as  the amounts would  not
significantly differ from the Company's historical results.

    On May 1, 1995, the Company acquired Sonix Communications Limited (Sonix) by
issuing  approximately  2.4  million  shares  of common  stock  for  all  of the
outstanding stock of Sonix. Sonix develops, manufactures and markets a range  of
networking  connectivity solutions  using ISDN  technology. The  acquisition was
accounted for as a pooling of interests.  All financial data of the Company  for
fiscal  1995 has been restated to include the operating results of Sonix. As the
historical operations of Sonix were not  significant to any year presented,  the
Company's  financial statements for  prior years have not  been restated and the
financial effect of the  prior year's results of  operations of Sonix have  been
accounted for as a $2.1 million charge against retained earnings in fiscal 1995.

    SUBSEQUENT  EVENT.   On June  9, 1995,  the Company  acquired Primary Access
Corporation (Primary  Access) by  issuing approximately  4.6 million  shares  of
common  stock for all  of the outstanding  stock of Primary  Access. The Company
also assumed and exchanged all options  and warrants to purchase Primary  Access
stock  for options and warrants to  purchase approximately 1.0 million shares of
the Company's common  stock. Primary Access  develops, manufactures and  markets
integrated  network  access  systems. The  acquisition  was accounted  for  as a
pooling of interests. All financial data of the Company for the periods prior to
the acquisition  were  restated to  include  the historical  financial  data  of
Primary  Access. Primary Access maintained its financial records on a 52-53 week
fiscal  year  ending  nearest  to  September  30.  The  May  31,  1994  restated
consolidated  balance sheet includes  the balance sheet of  Primary Access as of
October 3, 1993.  The restated  consolidated statements of  operations and  cash
flows  for the  years ended  May 31,  1994 and  1993 include  the Primary Access
statements of operations and cash flows for the years ended October 3, 1993  and
September 27, 1992, respectively.

                                      F-11
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 3: BUSINESS COMBINATIONS (CONTINUED)
    The results of operations of Primary Access for the eight-month period ended
May  31, 1994 reflected  revenues of $14.6  million and net  income of $780,000,
which has been  reported as an  increase in the  Company's fiscal 1995  retained
earnings.  No significant  adjustments were  required to  conform the accounting
policies of the Company and Primary Access. Financial information as of May  31,
1995  and for  the year  then ended reflects  the Company's  and Primary Access'
operations for that period.

    The following table shows  the effect on the  results of operations for  the
fiscal  years  in  which  the  combinations of  Sonix  and  Primary  Access were
effected:

<TABLE>
<CAPTION>
                                                                                  FISCAL YEAR ENDED MAY 31,
                                                                           ---------------------------------------
                                                                               1995          1994         1993
                                                                           -------------  -----------  -----------
                                                                                       (IN THOUSANDS)
<S>                                                                        <C>            <C>          <C>
Sales:
  3Com...................................................................  $   1,269,908  $   826,995  $   617,168
  Primary Access.........................................................         30,382       24,052       13,798
  Sonix..................................................................         25,403           --           --
                                                                           -------------  -----------  -----------
  Combined...............................................................  $   1,325,693  $   851,047  $   630,966
                                                                           -------------  -----------  -----------
                                                                           -------------  -----------  -----------
Net income (loss):
  3Com...................................................................  $     123,450  $   (28,694) $    38,561
  Primary Access.........................................................            293        4,478        1,116
  Sonix..................................................................          2,256           --           --
                                                                           -------------  -----------  -----------
  Combined...............................................................  $     125,999  $   (24,216) $    39,677
                                                                           -------------  -----------  -----------
                                                                           -------------  -----------  -----------
</TABLE>

    FOR THE YEAR ENDED MAY 31, 1994.  On January 14, 1994, the Company  acquired
all of the outstanding shares of Synernetics, Inc. (Synernetics) and assumed all
outstanding   Synernetics  stock  options.  The   purchase  price  consisted  of
approximately $104.0 million, plus $3.3 million of stock options. A  substantial
portion  of the purchase price  was paid using funds  from the Company's working
capital. Synernetics is engaged in the development, manufacturing and  marketing
of LAN switching products.

    On  February 2, 1994, the Company acquired  all of the outstanding shares of
Centrum Communications, Inc. (Centrum) and assumed all outstanding Centrum stock
options. The purchase price consisted  of approximately $36.0 million, of  which
$16.0  million was paid in cash at the time of the acquisition and $14.3 million
was paid  in cash  in August  1994 pursuant  to the  acquisition agreement.  The
remainder was associated with the value of the assumed stock options. Centrum is
engaged  in  the  development,  manufacturing  and  marketing  of  remote access
products and technology.

    The acquisitions  were  accounted for  as  purchases and,  accordingly,  the
acquired  assets and liabilities were recorded at their estimated fair values at
the dates of acquisition. The aggregate  purchase price of $143.3 million,  plus
$13.1   million  of  costs  directly  attributable  to  the  completion  of  the
acquisitions, has  been  allocated  to  the  assets  and  liabilities  acquired.
Approximately  $132.1 million of the total purchase price represented in-process
technology that  had  not  yet  reached technological  feasibility  and  had  no
alternative future use and was charged to the Company's operations.

    The  Company's  consolidated  results of  operations  include  the operating
results of the acquired companies since their acquisition dates.

    FOR THE YEAR ENDED MAY 31, 1993.  On January 29, 1993, the Company  acquired
Star-Tek,  Inc. (Star-Tek) by issuing approximately 7.0 million shares of common
stock  for  all  of  the  outstanding  shares  of  Star-Tek.  Star-Tek  designs,
manufactures and markets a range of Token Ring products focused primarily on the
connectivity  needs  of  larger  organizations  with  IBM  mainframe,  mid-range

                                      F-12
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 3: BUSINESS COMBINATIONS (CONTINUED)
and Token Ring LAN-based information systems. The acquisition was accounted  for
by the pooling of interests method. Star-Tek maintained its financial records on
a  fiscal year ending December 31. The results of operations of Star-Tek for the
five-month period ended May  31, 1992 reflected net  income of $1.6 million  and
pro-forma  tax adjustment of $595,000, the sum  of which has been reported as an
increase in the Company's fiscal 1993 retained earnings.

NOTE 4: TEMPORARY CASH INVESTMENTS
    Available-for-sale securities consist of:

<TABLE>
<CAPTION>
                                                                                     MAY 31, 1995
                                                                 ----------------------------------------------------
                                                                                 GROSS         GROSS
                                                                  AMORTIZED   UNREALIZED    UNREALIZED     ESTIMATED
                                                                    COST         GAINS        LOSSES      FAIR VALUE
                                                                 -----------  -----------  -------------  -----------
                                                                                    (IN THOUSANDS)
<S>                                                              <C>          <C>          <C>            <C>
State and municipal securities.................................  $   108,625   $     214     $     (22)   $   108,817
Corporate debt securities......................................       49,773          76            --         49,849
U.S. Government and agency securities..........................       25,633          39            --         25,672
                                                                 -----------       -----           ---    -----------
      Total....................................................  $   184,031   $     329     $     (22)   $   184,338
                                                                 -----------       -----           ---    -----------
                                                                 -----------       -----           ---    -----------
</TABLE>

    There were no realized gains or losses for the year ended May 31, 1995.

    The contractual maturity  of available-for-sale securities  at May 31,  1995
was as follows:

<TABLE>
<CAPTION>
                                                                                           AMORTIZED    ESTIMATED
                                                                                             COST      FAIR VALUE
                                                                                          -----------  -----------
                                                                                               (IN THOUSANDS)
<S>                                                                                       <C>          <C>
Within one year.........................................................................  $   142,158  $   142,312
Over one year to two years..............................................................       41,873       42,026
                                                                                          -----------  -----------
      Total.............................................................................  $   184,031  $   184,338
                                                                                          -----------  -----------
                                                                                          -----------  -----------
</TABLE>

NOTE 5: INVENTORIES
    Inventories at May 31 consist of:

<TABLE>
<CAPTION>
                                                                                              1995        1994
                                                                                           -----------  ---------
                                                                                               (IN THOUSANDS)
<S>                                                                                        <C>          <C>
Finished goods...........................................................................  $    73,061  $  44,876
Work-in-process..........................................................................       14,035      8,248
Raw materials............................................................................       36,962     20,234
                                                                                           -----------  ---------
      Total..............................................................................  $   124,058  $  73,358
                                                                                           -----------  ---------
                                                                                           -----------  ---------
</TABLE>

                                      F-13
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 6:  PROPERTY AND EQUIPMENT
    Property and equipment at May 31 consists of:

<TABLE>
<CAPTION>
                                                                                             1995         1994
                                                                                         ------------  -----------
                                                                                              (IN THOUSANDS)
<S>                                                                                      <C>           <C>
Land...................................................................................  $      1,303  $     1,303
Building...............................................................................         7,365        7,365
Machinery and equipment................................................................       176,088      124,670
Furniture and fixtures.................................................................        19,564       14,647
Leasehold improvements.................................................................        16,771       15,477
Construction in progress...............................................................        15,613           --
                                                                                         ------------  -----------
      Total............................................................................       236,704      163,462
Accumulated depreciation and amortization..............................................      (126,255)     (95,399)
                                                                                         ------------  -----------
Property and equipment -- net..........................................................  $    110,449  $    68,063
                                                                                         ------------  -----------
                                                                                         ------------  -----------
</TABLE>

NOTE 7:  ACCRUED AND OTHER LIABILITIES
    Accrued and other liabilities at May 31 consist of:

<TABLE>
<CAPTION>
                                                                1995        1994
                                                             -----------  ---------
                                                                 (IN THOUSANDS)
<S>                                                          <C>          <C>
Accrued payroll and related expenses.......................  $    38,950  $  22,048
Accrued product warranty...................................       20,769     14,102
Accrued cooperative advertising............................       12,015     11,544
Accrued payment to Centrum shareholders....................           --     14,267
Other accrued liabilities..................................       54,390     31,786
                                                             -----------  ---------
Accrued and other liabilities..............................  $   126,124  $  93,747
                                                             -----------  ---------
                                                             -----------  ---------
</TABLE>

NOTE 8:  BORROWING ARRANGEMENTS AND COMMITMENTS
    In  November 1994, the Company completed a private placement of $110 million
aggregate principal amount of convertible subordinated notes under Rule 144A  of
the  Securities  Act of  1933. The  notes  mature in  2001. Interest  is payable
semi-annually at 10.25% per  annum. The notes are  convertible at the option  of
the  note holders into the Company's common stock at an initial conversion price
of $34.563 per share.  Beginning in November 1997,  the notes are redeemable  at
the  option of  the Company at  an initial  redemption price of  102.929% of the
principal amount. The Company has reserved 3,182,640 shares of common stock  for
the conversion of these notes.

    In  July 1994, the Company signed a  five-year lease for 225,000 square feet
of office and manufacturing space to be  built on land adjacent to its  existing
headquarters  in  Santa Clara.  This arrangement  provides  the Company  with an
option to purchase the related property during the lease term, and at the end of
the lease  term the  Company is  obligated to  either purchase  the property  or
arrange for the sale of the property to a third party with a guaranteed residual
value  of  up  to $33.5  million  to the  seller  of the  property.  The Company
estimates that it will  commence occupancy of portions  of the facility in  June
1995,  with payments on the  lease estimated to start  in September 1995. Future
minimum lease payments are included in the table below.

    In April 1995, the Company signed an eight-year lease for 80,000 square feet
of office and  manufacturing space in  Boxborough, Massachusetts to  consolidate
existing  facilities  in  that area.  Concurrent  with this  lease,  the Company
entered into  an agreement  pursuant to  which  the Company  has the  option  to
purchase  the  property  in November  1995.  Future minimum  lease  payments are
included in the table below.

                                      F-14
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 8:  BORROWING ARRANGEMENTS AND COMMITMENTS (CONTINUED)
    As of May  31, 1995, the  Company had approximately  $29 million in  capital
expenditure  commitments, primarily associated with the expansion and upgrade of
product manufacturing lines and facilities.

    The Company has a $40 million revolving bank credit agreement which  expires
on  December 31, 1996. Under the agreement, the Company may select among various
interest rate  options,  including  borrowing  at the  bank's  prime  rate.  The
agreement  requires  that  the  Company maintain  certain  financial  ratios and
minimum net worth. At  May 31, 1995,  all such requirements  were met and  there
were  no  outstanding  borrowings  under  the  agreement.  The  Company  has  no
restrictions on paying cash dividends on its common stock.

    3Com Development  Corporation,  a  wholly-owned subsidiary  of  3Com,  is  a
limited  partner in a lease/joint venture arrangement to acquire and develop the
Company's corporate offices in Santa Clara, which were initially occupied in the
first quarter of fiscal 1991. Future minimum lease payments are included in  the
table below.

    The  Company  leases its  facilities and  certain equipment  under operating
leases. Leases expire at  various dates from 1996  to 2013 and certain  facility
leases  have renewal  options with  rentals based  upon changes  in the Consumer
Price Index or the fair market rental value of the property.

    Future operating lease commitments are as follows:

<TABLE>
<CAPTION>
                                                                  (IN
FISCAL YEAR                                                   THOUSANDS)
-----------------------------------------------------------  -------------
<S>                                                          <C>
1996.......................................................   $    20,648
1997.......................................................        17,975
1998.......................................................        13,242
1999.......................................................        12,247
2000.......................................................         9,919
Thereafter.................................................        15,416
                                                             -------------
    Total..................................................   $    89,447
                                                             -------------
                                                             -------------
</TABLE>

    Rent expense was $17.8 million, $14.0 million, and $14.1 million for  fiscal
1995, 1994, and 1993, respectively.

NOTE 9:  COMMON STOCK
    The  Company's common  stock was  split two-for-one  on August  25, 1995 for
shareholders of record on August 4, 1995 and was split two-for-one on  September
1,  1994 for shareholders of record on August 16, 1994. All applicable share and
per share data in these financial  statements have been restated to give  effect
to these stock splits.

    SHAREHOLDER  RIGHTS  PLAN.    In  September  1989,  the  Company's  Board of
Directors approved  a  stock  purchase  rights  plan  and  declared  a  dividend
distribution  of one common  stock purchase right for  each outstanding share of
its common stock.  The Company's Board  of Directors approved  an amendment  and
restatement  of the rights plan in  December 1994. The rights become exercisable
based on certain  limited conditions  related to acquisitions  of stock,  tender
offers  and certain  business combination  transactions of  the Company.  In the
event one  of the  limited  conditions is  triggered,  each right  entitles  the
registered  holder to purchase for $125 a  number of shares of 3Com common stock
(or of any acquiring company) with a  fair market value of $250. The rights  are
redeemable at the Company's option for $.01 per right and expire on December 13,
2004.

                                      F-15
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 9:  COMMON STOCK (CONTINUED)
    STOCK  OPTION  PLANS.    The  Company has  stock  option  plans  under which
employees and directors may be granted options to purchase common stock. Options
are generally granted at not less than the fair market value at grant date, vest
over a four-year period, and expire ten years after the grant date.

    A summary of option transactions under the plans follows:

<TABLE>
<CAPTION>
                                                              YEARS ENDED MAY 31,
                                                  --------------------------------------------
                                                       1995            1994           1993
                                                  --------------  --------------  ------------
                                                     (IN THOUSANDS EXCEPT PRICE PER SHARE)
<S>                                               <C>             <C>             <C>
Number of option shares:
  Granted and assumed...........................           7,320           9,630         8,766
  Exercised.....................................          (6,208)         (7,444)       (7,318)
  Cancelled.....................................          (1,188)           (896)       (1,302)
  Outstanding at end of year....................          25,330          25,406        24,116
Option price per share:
  Granted and assumed...........................  $   0.02-34.13  $   0.22-15.44  $  0.24-9.85
  Exercised.....................................      0.22-26.07      0.22-12.94     0.24-8.75
  Cancelled.....................................      0.37-26.10      0.23-14.10     0.24-8.78
  Outstanding at end of year....................  $   0.02-34.13  $   0.22-15.44  $  0.24-9.85
</TABLE>

    In connection with the fiscal  1995 purchase acquisitions discussed in  Note
3,  the Company assumed certain outstanding  options to purchase common stock of
the acquired companies and exchanged them for options to acquire 328,000  shares
of the Company's common stock at exercise prices of $0.02 to $1.72 per share.

    In  connection  with the  acquisition of  Primary Access  in June  1995, the
Company assumed certain outstanding options to purchase common stock of  Primary
Access and exchanged them for options to acquire 904,000 shares of the Company's
common  stock at excercise prices of $0.24 to $26.07 per share. The Company also
assumed certain outstanding warrants to purchase common stock of Primary  Access
and exchanged them for warrants to acquire 54,000 shares of the Company's common
stock  at excercise prices  of $2.26 to $4.89  as of May  31, 1995. The warrants
expire through 1997.

    At May  31, 1995,  options for  10.6 million  shares were  exercisable,  9.6
million  shares were available  for future grants, and  34.9 million shares were
reserved for issuance under the stock option plans.

    EMPLOYEE STOCK PURCHASE PLAN.   The Company has  an employee stock  purchase
plan,  under which eligible employees may  authorize payroll deductions of up to
10 percent of  their compensation  (as defined) to  purchase common  stock at  a
price  not less than 85 percent of the lower of the fair market values as of the
beginning or the end of the offering period. At May 31, 1995, 1.3 million shares
of common stock were reserved for issuance under this plan.

    RESTRICTED STOCK PLAN.  The Company has a restricted stock plan, under which
400,000 shares of  common stock were  reserved for  issuance at no  cost to  key
employees.  The shares are  issued at the fair  market value on  the date of the
grant. Any compensation expense is recognized as the granted shares vest over  a
one  to four year period.  Through May 31, 1995,  114,000 shares of common stock
have been issued under this plan. At May 31, 1995, 286,000 shares were  reserved
for future issuance.

    STOCK REPURCHASE PROGRAM.  The Board of Directors has authorized the Company
to   repurchase  up  to  30.0  million   shares  of  common  stock.  Under  this
authorization, 24.5 million  shares have  been repurchased and  the Company  may
repurchase up to an additional 5.5 million shares of common stock.

                                      F-16
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 10:  FOREIGN EXCHANGE CONTRACTS
    INTERCOMPANY  BALANCES AND BALANCE SHEET  EXPOSURES. The Company enters into
foreign exchange forward contracts to hedge certain balance sheet exposures  and
intercompany  balances against future movements in foreign exchange rates. Gains
and losses on  the foreign exchange  contracts are included  in other income  --
net,  which offset foreign exchange gains  or losses from revaluation of foreign
currency-denominated balance sheet items and intercompany balances.

    At May  31, 1995  and 1994,  the Company  had outstanding  foreign  exchange
forward  contracts of $16.7  million and $14.6  million, respectively, excluding
the foreign exchange contracts related to the Irish manufacturing facility.  The
contracts require the Company to exchange foreign currencies for U.S. dollars or
vice versa, and generally mature in one month.

    IRISH MANUFACTURING FACILITY.  The Company has entered into foreign exchange
forward  contracts to minimize  fluctuation in the expected  U.S. dollar cost of
expanding its Irish manufacturing facility due  to movements in the Irish  pound
to  U.S. dollar exchange rate.  Gains and losses on  the forward contracts, when
material, are  included  in construction  in  progress.  At May  31,  1995,  the
outstanding  foreign exchange contracts  related to the  construction in Ireland
were $10.1 million. The contracts require  the Company to exchange U.S.  dollars
for Irish pounds and have maturities from one to seven months.

NOTE 11:  FINANCIAL INSTRUMENTS FAIR VALUE DISCLOSURE
    The following summary disclosures are made in accordance with the provisions
of  SFAS No. 107, "Disclosures About Fair Value of Financial Instruments," which
requires the disclosure of fair value information about both on- and off-balance
sheet financial instruments where it is practicable to estimate the value.  Fair
value  is defined in SFAS No. 107 as  the amount at which an instrument could be
exchanged in a  current transaction  between willing  parties, other  than in  a
forced  or liquidation sale. It  is not the Company's  intent to enter into such
exchanges.

    Because  SFAS  No.  107  excludes  certain  financial  instruments  and  all
non-financial  instruments from its disclosure  requirements, any aggregation of
the fair value amounts presented would not represent the underlying value of the
Company.

<TABLE>
<CAPTION>
                                                  MAY 31, 1995              MAY 31, 1994
                                            ------------------------  ------------------------
                                             CARRYING     ESTIMATED    CARRYING     ESTIMATED
                                              AMOUNT     FAIR VALUE     AMOUNT     FAIR VALUE
                                            -----------  -----------  -----------  -----------
                                                              (IN THOUSANDS)
<S>                                         <C>          <C>          <C>          <C>
Assets:
  Cash and cash equivalents...............  $   149,210  $   149,210  $    69,768  $    69,768
  Temporary cash investments..............      184,338      184,338       63,413       63,208
Liabilities:
  Convertible subordinated notes..........  $   110,000  $   138,050  $        --  $        --
Commitments:
  Foreign exchange contracts..............  $    26,796  $    26,782  $    14,634  $    14,648
</TABLE>

    The following  methods and  assumptions  were used  in estimating  the  fair
values of financial instruments:

    CASH  AND CASH  EQUIVALENTS.  The  carrying amounts reported  in the balance
sheets for cash and cash equivalents approximate their estimated fair values.

    TEMPORARY CASH  INVESTMENTS,  FOREIGN  EXCHANGE  CONTRACTS  AND  CONVERTIBLE
SUBORDINATED  NOTES.  The  fair  value of  temporary  cash  investments, foreign
exchange contracts and convertible subordinated notes are based on quoted market
prices.

                                      F-17
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 12:  LICENSE
    In fiscal 1994, the Company licensed certain in-process wireless  technology
from  Pacific Monolithics, Inc. This technology was still under development and,
accordingly, $2.4 million  of the $2.5  million cost of  obtaining this  license
represented in-process technology and was charged to operations in fiscal 1994.

NOTE 13:  NON-RECURRING ITEMS
    Non-recurring items for the year ended May 31, 1995 consists of merger costs
of  $6.1 million related  to the acquisitions  of Sonix and  Primary Access (see
Note 3) offset by a $1.1 million reduction in accrued costs associated with  the
fiscal 1991 restructuring based on revised estimates of future costs.

    Non-recurring items for the year ended May 31, 1993 consists of the net cost
of  a litigation settlement of  $3.6 million (see Note  17), and merger costs of
$1.0 million related to the  acquisition of Star-Tek (see  Note 3), offset by  a
reduction  in  accrued  restructuring costs  of  $3.3 million  based  on revised
estimates of future costs.

NOTE 14:  OTHER INCOME -- NET
    Other income -- net consists of:

<TABLE>
<CAPTION>
                                                                 1995       1994       1993
                                                               ---------  ---------  ---------
                                                                       (IN THOUSANDS)
<S>                                                            <C>        <C>        <C>
Interest income..............................................  $  10,204  $   4,033  $   3,657
Interest expense.............................................     (6,874)      (164)      (419)
Other........................................................         29       (556)    (2,038)
                                                               ---------  ---------  ---------
    Total....................................................  $   3,359  $   3,313  $   1,200
                                                               ---------  ---------  ---------
                                                               ---------  ---------  ---------
</TABLE>

NOTE 15:  INCOME TAXES
    The provision for income taxes consists of:

<TABLE>
<CAPTION>
                                                               1995       1994       1993
                                                            ----------  ---------  ---------
                                                                     (IN THOUSANDS)
<S>                                                         <C>         <C>        <C>
Current:
  Federal.................................................  $   56,122  $  31,880  $  13,808
  State...................................................      19,393      8,208      3,139
  Foreign.................................................      22,537     16,771      8,293
                                                            ----------  ---------  ---------
    Total current.........................................      98,052     56,859     25,240
                                                            ----------  ---------  ---------
Deferred:
  Federal.................................................     (17,600)    (9,266)    (1,658)
  State...................................................      (6,885)        --         --
  Foreign.................................................         310      1,104     (1,846)
                                                            ----------  ---------  ---------
    Total deferred........................................     (24,175)    (8,162)    (3,504)
                                                            ----------  ---------  ---------
    Total.................................................  $   73,877  $  48,697  $  21,736
                                                            ----------  ---------  ---------
                                                            ----------  ---------  ---------
</TABLE>

                                      F-18
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 15:  INCOME TAXES (CONTINUED)
    The components of the net deferred tax asset consist of:

<TABLE>
<CAPTION>
                                                                 1995       1994
                                                               ---------  ---------
                                                                  (IN THOUSANDS)
<S>                                                            <C>        <C>
Deferred tax assets:
  Amortization and depreciation..............................  $  29,180  $   4,168
  Reserves not recognized for tax purposes...................     32,324     32,289
  Other......................................................     15,092      4,505
  Valuation allowance........................................     (6,845)    (8,274)
                                                               ---------  ---------
Total deferred tax asset.....................................     69,751     32,688
                                                               ---------  ---------
Deferred tax liabilities:
  Unremitted earnings........................................    (12,828)        --
  Net unrealized gain on securities available-for-sale.......       (123)        --
  Other......................................................        (85)       (25)
                                                               ---------  ---------
Net deferred tax asset.......................................  $  56,715  $  32,663
                                                               ---------  ---------
                                                               ---------  ---------
</TABLE>

    Valuation allowance relates primarily to expenses, the realization of  which
is  not  assured on  future state  income tax  returns. The  valuation allowance
decreased $1.4 million in fiscal 1995,  and increased $926,000 and $1.1  million
in 1994 and 1993, respectively.

    Tax  carryforwards  of  acquired  businesses  consist  of  $1.0  million and
$800,000 of net operating loss and tax credit carryforwards, respectively,  that
expire in 2004 through 2008.

    The  provision for income taxes differs from the amount computed by applying
the federal statutory income tax rate to income before taxes as follows:

<TABLE>
<CAPTION>
                                                                                  1995     1994    1993
                                                                                  -----   ------   -----
<S>                                                                               <C>     <C>      <C>
Tax computed at federal statutory rate..........................................  35.0%    35.0%   34.0%
State income taxes, net of federal effect.......................................   4.1      3.6     3.4
Foreign sales corporation.......................................................  (0.6)    (4.2)   (1.2)
Tax exempt investment income....................................................  (0.8)    (4.5)   (1.5)
Benefit of net operating loss carryforwards.....................................    --     (7.4)   (0.8)
Provision for combined foreign and U.S. taxes on certain foreign income at rates
 less than U.S. rates...........................................................  (4.1)    (6.0)   (0.4)
Research tax credits............................................................  (1.5)    (6.9)   (0.2)
Non-deductible purchased in-process technology..................................   3.0    192.7      --
Effect of tax law changes.......................................................    --     (5.1)     --
Other...........................................................................   1.9      1.7     2.1
                                                                                  -----   ------   -----
    Total.......................................................................  37.0%   198.9%   35.4%
                                                                                  -----   ------   -----
                                                                                  -----   ------   -----
</TABLE>

    Income before income taxes for the years ended 1995, 1994, and 1993 includes
income of $131.2  million, $58.2 million  and $18.7 million  from the  Company's
foreign  subsidiaries. The Company has not  provided for federal income taxes on
approximately $38.7 million of  undistributed earnings of foreign  subsidiaries,
which  the Company intends to reinvest in subsidiary operations indefinitely. If
such undistributed earnings were to be remitted, the related tax liability would
be approximately $10.7 million.

                                      F-19
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 16:  GEOGRAPHIC AREA INFORMATION
    The Company operates in a single industry segment: the design,  manufacture,
marketing,  and  support  of  data  networking  systems.  The  Company's foreign
operations consist primarily of  central distribution and order  administration,
manufacturing  and research  and development  facilities in  Western Europe, and
sales,  marketing  and  customer  service  activities  conducted  through  sales
subsidiaries throughout the world.

    Sales,  operating income  and identifiable  assets, classified  by the major
geographic areas in which the Company operates, are as follows:

<TABLE>
<CAPTION>
                                                                               1995          1994         1993
                                                                           -------------  -----------  -----------
                                                                                       (IN THOUSANDS)
<S>                                                                        <C>            <C>          <C>
Revenues from unaffiliated customers:
United States operations.................................................  $     623,153  $   423,888  $   322,677
Export sales from United States operations...............................        179,225      103,127       69,237
European operations......................................................        523,151      324,032      224,891
Other....................................................................            164           --       14,161
                                                                           -------------  -----------  -----------
    Total................................................................  $   1,325,693  $   851,047  $   630,966
                                                                           -------------  -----------  -----------
                                                                           -------------  -----------  -----------
Transfers from geographic areas (eliminated in consolidation):
United States operations.................................................  $     144,862  $   112,418  $   101,570
European operations......................................................        123,360       52,595       39,920
Other....................................................................            439           --       23,354
                                                                           -------------  -----------  -----------
    Total................................................................  $     268,661  $   165,013  $   164,844
                                                                           -------------  -----------  -----------
                                                                           -------------  -----------  -----------
Operating income (loss):
United States operations.................................................  $      79,117  $   (55,869) $    40,393
European operations......................................................        141,367       63,306       23,757
Other....................................................................         (2,149)         587         (212)
Eliminations.............................................................        (21,818)      (4,602)      (3,725)
                                                                           -------------  -----------  -----------
    Total................................................................  $     196,517  $     3,422  $    60,213
                                                                           -------------  -----------  -----------
                                                                           -------------  -----------  -----------
Identifiable assets:
United States operations.................................................  $     647,072  $   345,548
European operations......................................................        235,634      123,144
Other....................................................................         10,009        2,498
Eliminations.............................................................        (34,909)     (13,950)
                                                                           -------------  -----------
    Total................................................................  $     857,806  $   457,240
                                                                           -------------  -----------
                                                                           -------------  -----------
</TABLE>

    Operating income (loss) for the United States operations for the years ended
May 31, 1995 and 1994 included charges of approximately $60.8 million and $134.5
million, respectively, for  purchased in-process technology  resulting from  the
Company's  acquisitions in those  years. Transfers between  geographic areas are
accounted for at prices representative of unaffiliated party transactions.

NOTE 17:  LITIGATION
    In August 1989, four class action  lawsuits were filed in the United  States
District  Court for the  Northern District of California  naming the Company and
certain of  its directors  and officers  as defendants.  The suits,  which  were
consolidated  into a  single action,  alleged that  defendants misrepresented or
failed to disclose material facts  about the Company's operations and  financial
results,  which  plaintiffs contended  artificially  inflated the  price  of the
Company's securities during the period December 6, 1988 to August 7, 1989.

                                      F-20
<PAGE>
                                3COM CORPORATION
      NOTES TO SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 17:  LITIGATION (CONTINUED)
    In April 1993, the Company and plaintiffs reached an agreement to settle the
consolidated action  in its  entirety. Although  the Company  believes that  the
claims  asserted in the class action were without merit, the Company believed it
was in the  best interest  of its  shareholders to settle  the case  due to  the
continuing  costs of defense, the distraction  of management's attention and the
uncertainties inherent in any litigation.  The principal terms of the  agreement
called for a settlement of $9.9 million, a substantial portion of which was paid
by the Company's insurance carrier.

            SUPPLEMENTAL QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

<TABLE>
<CAPTION>
                                           FISCAL 1995 QUARTERS ENDED                  FISCAL 1994 QUARTERS ENDED
                                   ------------------------------------------  ------------------------------------------
                                    MAY 31     FEB. 28    NOV. 30    AUG. 31    MAY 31     FEB. 28    NOV. 30    AUG. 31
                                     1995       1995       1994       1994       1994       1994       1993       1993
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                       (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
Sales............................  $ 393,372  $ 354,055  $ 315,465  $ 262,801  $ 248,110  $ 224,396  $ 211,067  $ 167,474
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Gross margin.....................    212,438    190,471    168,622    138,909    128,378    116,767    106,282     83,640
Gross margin %...................      54.0%      53.8%      53.5%      52.9%      51.7%      52.0%      50.4%      49.9%
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating income (loss)..........     74,544     72,547      2,594     46,832     42,323    (93,356)    33,106     21,349
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income (loss)................     45,846     46,256      3,125     30,772     28,173   (102,294)    22,523     27,382
Net income (loss) %..............      11.7%      13.1%       1.0%      11.7%      11.4%     (45.6%)     10.7%      16.4%
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Fully diluted net income (loss)
 per share.......................  $    0.30  $    0.30  $    0.02  $    0.21  $    0.20  $   (0.78) $    0.16  $    0.20
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>

    Notes:  Net income for the  quarter ended May 31,  1995 included a charge of
approximately $6.1 million ($.04 per share) for merger costs associated with the
acquisitions of  Sonix  and Primary  Access  (see  Note 3  to  the  Supplemental
Consolidated  Financial Statements). Net  income for the  quarter ended November
30, 1994 included a charge of  approximately $60.8 million ($.25 per share)  for
purchased  in-process technology  (see Note  3 to  the Supplemental Consolidated
Financial Statements)  and a  credit of  $1.1  million ($.01  per share)  for  a
reduction  in  accrued  restructuring  costs. Net  loss  for  the  quarter ended
February 28, 1994 included  a charge of approximately  $134.5 million ($.96  per
share)  for  purchased  in-process  technology  (see  Notes  3  and  12  to  the
Supplemental Consolidated  Financial Statements).  Net  income for  the  quarter
ended  August 31, 1993 included a gain  of approximately $17.7 million ($.08 per
share) related to the sale  of an investment and a  tax benefit of $1.2  million
($.01 per share) resulting from tax law changes.

    Excluding  the non-recurring  items noted  above, pro  forma net  income per
share on a fully diluted basis would have been as follows:

<TABLE>
<CAPTION>
                                           FISCAL 1995 QUARTERS ENDED                  FISCAL 1994 QUARTERS ENDED
                                   ------------------------------------------  ------------------------------------------
                                    MAY 31     FEB. 28    NOV. 30    AUG. 31    MAY 31     FEB. 28    NOV. 30    AUG. 31
                                     1995       1995       1994       1994       1994       1994       1993       1993
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
<S>                                <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
Pro forma net income per share...  $    0.34  $    0.30  $    0.26  $    0.21  $    0.20  $    0.18  $    0.16  $    0.11
                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>

                                      F-21
<PAGE>
                                                                         ANNEX A

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                          AGREEMENT AND PLAN OF MERGER

                                     AMONG

                               3COM CORPORATION,
                           A CALIFORNIA CORPORATION,

                        CHIPCOM ACQUISITION CORPORATION,
                    A DELAWARE CORPORATION AND WHOLLY-OWNED
                         SUBSIDIARY OF 3COM CORPORATION

                                      AND

                              CHIPCOM CORPORATION,
                             A DELAWARE CORPORATION

                              DATED JULY 26, 1995

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                             PAGE
                                                                                                           ---------
<S>                        <C>                                                                             <C>
ARTICLE I                  THE MERGER....................................................................        A-1
    Section 1.1            Effective Time of the Merger..................................................        A-1
    Section 1.2            Closing.......................................................................        A-1
    Section 1.3            Effects of the Merger.........................................................        A-1
    Section 1.4            Directors and Officers........................................................        A-2

ARTICLE II                 CONVERSION OF SECURITIES......................................................        A-2
    Section 2.1            Conversion of Capital Stock...................................................        A-2
    Section 2.2            Exchange of Certificates......................................................        A-3

ARTICLE III                REPRESENTATIONS AND WARRANTIES OF CHIPCOM.....................................        A-5
    Section 3.1            Organization..................................................................        A-5
    Section 3.2            Chipcom Capital Structure.....................................................        A-5
    Section 3.3            Authority; No Conflict; Required Filings and Consents.........................        A-6
    Section 3.4            SEC Filings; Financial Statements.............................................        A-7
    Section 3.5            No Undisclosed Liabilities....................................................        A-7
    Section 3.6            Absence of Certain Changes or Events..........................................        A-7
    Section 3.7            Taxes.........................................................................        A-8
    Section 3.8            Properties....................................................................        A-8
    Section 3.9            Intellectual Property.........................................................        A-8
    Section 3.10           Agreements, Contracts and Commitments.........................................        A-9
    Section 3.11           Litigation....................................................................        A-9
    Section 3.12           Environmental Matters.........................................................        A-9
    Section 3.13           Employee Benefit Plans........................................................       A-10
    Section 3.14           Compliance with Laws..........................................................       A-11
    Section 3.15           Pooling of Interests..........................................................       A-11
    Section 3.16           Interested Party Transactions.................................................       A-11
    Section 3.17           Registration Statement: Proxy Statement/Prospectus............................       A-11
    Section 3.18           Opinion of Financial Advisor..................................................       A-12
    Section 3.19           Section 203 of the DGCL Not Applicable........................................       A-12

ARTICLE IV                 REPRESENTATIONS AND WARRANTIES OF BUYER AND SUB...............................       A-12
    Section 4.1            Organization of the Company...................................................       A-12
    Section 4.2            Buyer Capital Structure.......................................................       A-12
    Section 4.3            Authority; No Conflict; Required Filings and Consents.........................       A-13
    Section 4.4            SEC Filings; Financial Statements.............................................       A-14
    Section 4.5            No Undisclosed Liabilities....................................................       A-14
    Section 4.6            Absence of Certain Changes or Events..........................................       A-14
    Section 4.7            Taxes.........................................................................       A-15
    Section 4.8            Properties....................................................................       A-15
    Section 4.9            Intellectual Property.........................................................       A-15
    Section 4.10           Agreements, Contracts and Commitments.........................................       A-15
    Section 4.11           Litigation....................................................................       A-16
    Section 4.12           Environmental Matters.........................................................       A-16
    Section 4.13           Employee Benefit Plans........................................................       A-16
    Section 4.14           Compliance with Laws..........................................................       A-17
    Section 4.15           Pooling of Interests..........................................................       A-17
    Section 4.16           Interested Party Transactions.................................................       A-17
    Section 4.17           Registration Statement; Proxy Statement/Prospectus............................       A-17
    Section 4.18           Opinion of Financial Advisor..................................................       A-18
    Section 4.19           Interim Operations of Sub.....................................................       A-18
</TABLE>

                                       i
<PAGE>
<TABLE>
<CAPTION>
                                                                                                             PAGE
                                                                                                           ---------
<S>                        <C>                                                                             <C>
ARTICLE V                  CONDUCT OF BUSINESS...........................................................       A-18
    Section 5.1            Covenants of Chipcom..........................................................       A-18
    Section 5.2            Covenants of Buyer............................................................       A-19
    Section 5.3            Cooperation...................................................................       A-20

ARTICLE VI                 ADDITIONAL AGREEMENTS.........................................................       A-20
    Section 6.1            No Solicitation...............................................................       A-20
    Section 6.2            Proxy Statement/Prospectus; Registration Statement............................       A-21
    Section 6.3            Consents......................................................................       A-21
    Section 6.4            Current Nasdaq Quotation......................................................       A-21
    Section 6.5            Access to Information.........................................................       A-21
    Section 6.6            Chipcom Stockholders Meeting..................................................       A-22
    Section 6.7            Legal Conditions to Merger....................................................       A-22
    Section 6.8            Public Disclosure.............................................................       A-22
    Section 6.9            Tax-Free Organization.........................................................       A-22
    Section 6.10           Pooling Accounting............................................................       A-22
    Section 6.11           Affiliate Agreements..........................................................       A-22
    Section 6.12           Nasdaq Quotation..............................................................       A-23
    Section 6.13           Stock Plans, Options and Warrants.............................................       A-23
    Section 6.14           Brokers or Finders............................................................       A-24
    Section 6.15           Indemnification...............................................................       A-24
    Section 6.16           Additional Agreements; Reasonable Efforts.....................................       A-25

ARTICLE VII                CONDITIONS TO MERGER..........................................................       A-25
    Section 7.1            Conditions to Each Party's Obligation to Effect the Merger....................       A-25
    Section 7.2            Additional Conditions to Obligations of Buyer and Sub.........................       A-26
    Section 7.3            Additional Conditions to Obligations of Chipcom...............................       A-27

ARTICLE VIII               TERMINATION AND AMENDMENT.....................................................       A-27
    Section 8.1            Termination...................................................................       A-27
    Section 8.2            Effect of Termination.........................................................       A-28
    Section 8.3            Fees and Expenses.............................................................       A-28
    Section 8.4            Amendment.....................................................................       A-29
    Section 8.5            Extension; Waiver.............................................................       A-29

ARTICLE IX                 MISCELLANEOUS.................................................................       A-29
    Section 9.1            Nonsurvival of Representations, Warranties and Agreements.....................       A-29
    Section 9.2            Notices.......................................................................       A-30
    Section 9.3            Interpretation................................................................       A-30
    Section 9.4            Counterparts..................................................................       A-30
    Section 9.5            Entire Agreement; No Third Party Beneficiaries................................       A-30
    Section 9.6            Governing Law.................................................................       A-30
    Section 9.7            Assignment....................................................................       A-30
</TABLE>

                                       ii
<PAGE>
                             TABLE OF DEFINED TERMS

<TABLE>
<CAPTION>
                                                                                               CROSS REFERENCE
TERMS                                                                                           IN AGREEMENT
-----------------------------------------------------------------------------------------  -----------------------
<S>                                                                                        <C>
Acquisition Proposal.....................................................................  Section 6.1(a)
Affiliate................................................................................  Section 6.11
Affiliates Agreement.....................................................................  Section 6.11
Agreement................................................................................  Preamble
Alternative Transaction..................................................................  Section 8.3(e)
Buyer....................................................................................  Preamble
Buyer Balance Sheet......................................................................  Section 4.4(b)
Buyer Common Stock.......................................................................  Section 2.1(b)
Buyer Disclosure Schedule................................................................  Article IV
Buyer Employee Plans.....................................................................  Section 4.13(a)
Buyer Intellectual Property Rights.......................................................  Section 4.9(a)
Buyer Material Contracts.................................................................  Section 4.10
Buyer Option Plans.......................................................................  Section 4.2(a)
Buyer Preferred Stock....................................................................  Section 4.2(a)
Buyer Purchase Plan......................................................................  Section 4.2(a)
Buyer Restricted Stock Plan..............................................................  Section 4.2(a)
Buyer SEC Reports........................................................................  Section 4.4(a)
Certificate(s)...........................................................................  Section 2.2(b)
Certificate of Merger....................................................................  Section 1.1
Chipcom..................................................................................  Preamble
Chipcom Balance Sheet....................................................................  Section 3.4(b)
Chipcom Common Stock.....................................................................  Section 2.1
Chipcom Director Option Plan.............................................................  Section 2.1(d)
Chipcom Disclosure Schedule..............................................................  Article III
Chipcom Employee Plans...................................................................  Section 3.13(a)
Chipcom Intellectual Property Rights.....................................................  Section 3.9(a)
Chipcom Material Contracts...............................................................  Section 3.10
Chipcom Preferred Stock..................................................................  Section 3.2(a)
Chipcom Purchase Plans...................................................................  Section 2.1(d)
Chipcom SEC Reports......................................................................  Section 3.4(a)
Chipcom Stock Option.....................................................................  Section 6.13
Chipcom Stockholders' Meeting............................................................  Section 3.17
Chipcom Third Party Intellectual Property Rights.........................................  Section 3.9(a)
Closing..................................................................................  Section 1.2
Closing Date.............................................................................  Section 1.2
Code.....................................................................................  Preamble
Confidentiality Agreement................................................................  Section 6.1(a)
Constituent Corporations.................................................................  Section 1.3(a)
Conversion Number........................................................................  Section 2.1(c)
DGCL.....................................................................................  Section 1.1
Effective Time...........................................................................  Section 1.1
Environmental Permits....................................................................  Section 3.12(c)
ERISA....................................................................................  Section 3.13(a)
ERISA Affiliate..........................................................................  Section 3.13(a)
Exchange Act.............................................................................  Section 3.3(c)(iv)
Exchange Agent...........................................................................  Section 2.2(a)
Exchange Fund............................................................................  Section 2.2(a)
Governmental Entity......................................................................  Section 3.3(c)
Hazardous Material.......................................................................  Section 3.12(a)
</TABLE>

                                      iii
<PAGE>
<TABLE>
<CAPTION>
                                                                                               CROSS REFERENCE
TERMS                                                                                           IN AGREEMENT
-----------------------------------------------------------------------------------------  -----------------------
<S>                                                                                        <C>
Hazardous Materials Activities...........................................................  Section 3.12(b)
HSR Act..................................................................................  Section 3.3(c)(i)
Indemnified Liabilities..................................................................  Section 6.15(a)
Indemnified Parties......................................................................  Section 6.15(a)
IRS......................................................................................  Section 3.13(b)
Material Lease(s)........................................................................  Section 3.8
Material Adverse Change..................................................................  Section 3.6
Material Adverse Effect..................................................................  Section 3.1
Merger...................................................................................  Preamble
Proxy Statement..........................................................................  Section 3.17
Registration Statement...................................................................  Section 3.17
Returns..................................................................................  Section 3.7(b)
Rule 145.................................................................................  Section 6.11
SEC......................................................................................  Section 3.3(c)(ii)
Securities Act...........................................................................  Section 3.3(c)(ii)
Sub......................................................................................  Preamble
Subsidiary...............................................................................  Section 2.1(b)
Superior Proposal........................................................................  Section 6.1(a)
Surviving Corporation....................................................................  Section 1.3(a)
Tax(es)..................................................................................  Section 3.7(a)
Third Party..............................................................................  Section 8.3(e)
</TABLE>

                                       iv
<PAGE>
                          AGREEMENT AND PLAN OF MERGER

    AGREEMENT AND PLAN OF MERGER (the "Agreement"), dated as of July 26, 1995 by
and   among  3Com  Corporation,  a  California  corporation  ("Buyer"),  Chipcom
Acquisition Corporation, a Delaware corporation and a wholly-owned subsidiary of
Buyer ("Sub"), and Chipcom Corporation, a Delaware corporation ("Chipcom").

    WHEREAS, the Boards of Directors of Buyer, Sub and Chipcom deem it advisable
and in the best  interests of each corporation  and its respective  stockholders
that  Buyer  and Chipcom  combine  in order  to  advance the  long-term business
interests of Buyer and Chipcom;

    WHEREAS, the combination of Buyer and Chipcom shall be effected by the terms
of this Agreement through a  transaction in which Sub  will merge with and  into
Chipcom,  Chipcom  will  become  a  wholly owned  subsidiary  of  Buyer  and the
stockholders of Chipcom will become stockholders of Buyer (the "Merger");

    WHEREAS, for federal  income tax purposes,  it is intended  that the  Merger
shall  qualify as a reorganization  within the meaning of  Section 368(a) of the
Internal Revenue Code of 1986, as amended (the "Code"); and

    WHEREAS, for accounting purposes,  it is intended that  the Merger shall  be
accounted for as a pooling of interests.

    NOW,  THEREFORE,  in  consideration  of  the  foregoing  and  the respective
representations, warranties,  covenants  and  agreements set  forth  below,  the
parties agree as follows:

                                   ARTICLE I
                                   THE MERGER

    Section  1.1  EFFECTIVE  TIME OF THE  MERGER.  Subject  to the provisions of
this Agreement, a  certificate of  merger in  such form  as is  required by  the
relevant  provisions of the  Delaware General Corporation  Law (the "DGCL") (the
"Certificate of Merger") shall  be duly prepared,  executed and acknowledged  by
the  Surviving Corporation (as defined in  Section 1.3) and thereafter delivered
to the Secretary of State  of the State of Delaware  for filing, as provided  in
the  DGCL, as soon  as practicable on or  after the Closing  Date (as defined in
Section 1.2).  The  Merger  shall  become  effective  upon  the  filing  of  the
Certificate of Merger with the Secretary of State of the State of Delaware or at
such time thereafter as is provided in the Certificate of Merger (the "Effective
Time").

    Section  1.2  CLOSING.  The closing  of the Merger (the "Closing") will take
place at  10:00 a.m.,  Eastern Time,  on a  date to  be specified  by Buyer  and
Chipcom,  which  shall  be (i)  no  later  than the  second  business  day after
satisfaction of the latest to occur of the conditions set forth in Sections 7.1,
7.2(b) (other  than  the  delivery  of the  officers'  certificate  referred  to
therein)  and  7.3(b)  (other than  the  delivery of  the  officers' certificate
referred to therein) (provided  that the other closing  conditions set forth  in
Article  VII have been met or  waived as provided in Article  VII at or prior to
the Closing) and (ii) not earlier than October 13, 1995, unless Chipcom consents
to such earlier date, such consent to not be unreasonably withheld (the "Closing
Date"), at the offices of Hale and Dorr, 60 State Street, Boston,  Massachusetts
unless another date or place is agreed to in writing by Buyer and Chipcom.

    Section 1.3  EFFECTS OF THE MERGER.

    (a)  At the Effective Time (i) the separate existence of Sub shall cease and
Sub shall  be  merged with  and  into Chipcom  (Sub  and Chipcom  are  sometimes
referred  to below  as the "Constituent  Corporations" and  Chipcom is sometimes
referred to  below as  the  "Surviving Corporation"),  (ii) the  Certificate  of
Incorporation  of  Chipcom  shall be  amended  so  that Article  FOURTH  of such
Certificate of Incorporation shall read as follows: "The total number of  shares
of  all classes of stock which the  Corporation shall have authority to issue is
1,000,   all    of    which    shall    consist    of    Common    Stock,    par

                                      A-1
<PAGE>
value  $.001 per share,"  and, as so amended,  such Certificate of Incorporation
shall be  the Certificate  of Incorporation  of the  Surviving Corporation,  and
(iii)  the Bylaws of  Sub as in  effect immediately prior  to the Effective Time
shall be the Bylaws of the Surviving Corporation.

    (b) At and after the Effective Time, the Surviving Corporation shall possess
all the rights, privileges, powers  and franchises of a public  as well as of  a
private  nature, and be subject to all the restrictions, disabilities and duties
of  each  of  the  Constituent  Corporations;  and  all  and  singular   rights,
privileges,  powers and franchises of each  of the Constituent Corporations, and
all property, real,  personal and  mixed, and  all debts  due to  either of  the
Constituent Corporations on whatever account, as well as for stock subscriptions
and  all  other  things  in  action or  belonging  to  each  of  the Constituent
Corporations, shall be vested  in the Surviving  Corporation, and all  property,
rights,  privileges, powers  and franchises,  and all  and every  other interest
shall be thereafter as effectually the property of the Surviving Corporation  as
they  were of  the Constituent  Corporations, and the  title to  any real estate
vested by deed or  otherwise, in either of  the Constituent Corporations,  shall
not  revert or be in any way impaired; but all rights of creditors and all liens
upon any property of either of  the Constituent Corporations shall be  preserved
unimpaired,   and  all  debts,   liabilities  and  duties   of  the  Constituent
Corporations shall thereafter attach  to the Surviving  Corporation, and may  be
enforced against it to the same extent as if such debts and liabilities had been
incurred by it.

    Section 1.4  DIRECTORS AND OFFICERS.  The directors of Sub immediately prior
to  the  Effective  Time  shall  be  the  initial  directors  of  the  Surviving
Corporation,  each  to  hold  office  in  accordance  with  the  Certificate  of
Incorporation  and  Bylaws of  the Surviving  Corporation,  and the  officers of
Chipcom immediately prior to the Effective Time shall be the initial officers of
the Surviving Corporation, in  each case until  their respective successors  are
duly elected or appointed.

                                   ARTICLE II
                            CONVERSION OF SECURITIES

    Section  2.1   CONVERSION OF CAPITAL  STOCK.   As of the  Effective Time, by
virtue of the Merger  and without any action  on the part of  the holder of  any
shares  of Common Stock, $.02 par value,  of Chipcom ("Chipcom Common Stock") or
capital stock of Sub:

        (a)  CAPITAL STOCK  OF SUB.   Each issued and  outstanding share of  the
    capital  stock of Sub shall be converted  into and become one fully paid and
    nonassessable share  of Common  Stock,  $.001 par  value, of  the  Surviving
    Corporation.

        (b)   CANCELLATION OF TREASURY STOCK  AND BUYER-OWNED STOCK.  All shares
    of Chipcom Common Stock that are owned by Chipcom as treasury stock and  any
    shares of Chipcom Common Stock owned by Buyer, Sub or any other wholly-owned
    Subsidiary  (as defined below)  of Buyer shall be  cancelled and retired and
    shall cease to exist and no stock  of Buyer or other consideration shall  be
    delivered in exchange therefor. All shares of Common Stock, no par value, of
    Buyer ("Buyer Common Stock") owned by Chipcom shall remain unaffected by the
    Merger. As used in this Agreement, the word "Subsidiary" means, with respect
    to any party, any corporation or other organization, whether incorporated or
    unincorporated,  of which  (i) such  party or  any other  Subsidiary of such
    party is a general partner (excluding partnerships, the general  partnership
    interests of which held by such party or any Subsidiary of such party do not
    have a majority of the voting interest in such partnership) or (ii) at least
    a  majority  of the  securities  or other  interests  having by  their terms
    ordinary voting  power to  elect a  majority of  the Board  of Directors  or
    others  performing  similar functions  with respect  to such  corporation or
    other organization is  directly or  indirectly owned or  controlled by  such
    party or by any one or more of its Subsidiaries, or by such party and one or
    more of its Subsidiaries.

        (c)   EXCHANGE RATIO FOR CHIPCOM COMMON  STOCK.  Subject to Section 2.2,
    each issued and outstanding share of Chipcom Common Stock (other than shares
    to be cancelled in accordance with  Section 2.1(b)) shall be converted  into
    the    right   to   receive    .53   (which   amount    will   be   adjusted

                                      A-2
<PAGE>
    for any stock  split or  stock dividend effected  between the  date of  this
    Agreement  and the Effective Time) (the  "Conversion Number") fully paid and
    nonassessable shares  of Buyer  Common  Stock. All  such shares  of  Chipcom
    Common  Stock, when so  converted, shall no longer  be outstanding and shall
    automatically be cancelled and  retired and shall cease  to exist, and  each
    holder of a certificate representing any such shares shall cease to have any
    rights with respect thereto, except the right to receive the shares of Buyer
    Common Stock and any cash in lieu of fractional shares of Buyer Common Stock
    to  be issued or paid  in consideration therefor upon  the surrender of such
    certificate in accordance with Section 2.2, without interest.

        (d)  CHIPCOM STOCK  OPTIONS AND EMPLOYEE STOCK  PURCHASE PLANS.  At  the
    Effective Time, all
    then  outstanding  options to  purchase  Chipcom Common  Stock  issued under
    Chipcom's 1983 Stock Option Plan  and 1991 Stock Option Plan  (collectively,
    the  "Chipcom Employee Option Plans") will be assumed by Buyer in accordance
    with Section 6.13. At  the Effective Time, all  then outstanding options  to
    purchase Chipcom Common Stock under Chipcom's 1991 Director Option Plan (the
    "Chipcom  Director Option Plan") not exercised as of the Effective Time will
    terminate in accordance with the terms  of the Chipcom Director Option  Plan
    and  the agreements entered  into under such plan.  Immediately prior to the
    Effective Time, all  then outstanding  rights to acquire  shares of  Chipcom
    Common  Stock under  Chipcom's 1991  Employee Stock  Purchase Plan  and 1993
    Employee Stock Purchase  Plan (collectively, the  "Chipcom Purchase  Plans")
    will  be exercised for  the purchase of  shares of Chipcom  Common Stock, as
    provided in Section 6.13.

    Section 2.2    EXCHANGE OF  CERTIFICATES.   The  procedures  for  exchanging
outstanding  shares of Chipcom  Common Stock for Buyer  Common Stock pursuant to
the Merger are as follows:

        (a)  EXCHANGE AGENT.  As of the Effective Time, Buyer shall deposit with
    The First National Bank of Boston (the "Exchange Agent"), for the benefit of
    the holders of shares  of Chipcom Common Stock,  for exchange in  accordance
    with this Section 2.2, through the Exchange Agent, certificates representing
    the  shares  of  Buyer Common  Stock  (such  shares of  Buyer  Common Stock,
    together with any  dividends or  distributions with  respect thereto,  being
    hereinafter referred to as the "Exchange Fund") issuable pursuant to Section
    2.1 in exchange for outstanding shares of Chipcom Common Stock.

        (b)   EXCHANGE PROCEDURES.  As  soon as reasonably practicable after the
    Effective Time, the Exchange Agent shall mail to each holder of record of  a
    certificate  or certificates which  immediately prior to  the Effective Time
    represented outstanding shares of Chipcom Common Stock (each a "Certificate"
    and collectively, the "Certificates")  whose shares were converted  pursuant
    to  Section 2.1 into the right to receive shares of Buyer Common Stock (i) a
    letter of transmittal (which shall specify that delivery shall be  effected,
    and  risk  of loss  and  title to  the  Certificates shall  pass,  only upon
    delivery of the Certificates to the Exchange Agent and shall be in such form
    and have such other provisions as Buyer and Chipcom may reasonably  specify)
    and (ii) instructions for use in effecting the surrender of the Certificates
    in exchange for certificates representing shares of Buyer Common Stock. Upon
    surrender of a Certificate for cancellation to the Exchange Agent or to such
    other  agent or  agents as  may be  appointed by  Buyer, together  with such
    letter of transmittal, duly executed,  the holder of such Certificate  shall
    be  entitled to receive in exchange therefor a certificate representing that
    number of whole shares of Buyer Common Stock which such holder has the right
    to  receive  pursuant  to  the  provisions  of  this  Article  II,  and  the
    Certificate so surrendered shall immediately be cancelled. In the event of a
    transfer of ownership of Chipcom Common Stock which is not registered in the
    transfer records of Chipcom, a certificate representing the proper number of
    shares  of  Buyer  Common  Stock  may  be  issued  to  a  transferee  if the
    Certificate representing  such  Chipcom Common  Stock  is presented  to  the
    Exchange Agent, accompanied by all documents required to evidence and effect
    such  transfer and by evidence that any applicable stock transfer taxes have
    been paid.  Until surrendered  as  contemplated by  this Section  2.2,  each
    Certificate  shall  be  deemed  at  any time  after  the  Effective  Time to

                                      A-3
<PAGE>
    represent only  the right  to receive  upon such  surrender the  certificate
    representing shares of Buyer Common Stock and cash in lieu of any fractional
    shares of Buyer Common Stock as contemplated by this Section 2.2.

        (c)   DISTRIBUTIONS WITH RESPECT TO UNEXCHANGED SHARES.  No dividends or
    other distributions declared or made  after the Effective Time with  respect
    to  Buyer Common Stock with a record  date after the Effective Time shall be
    paid to the  holder of  any unsurrendered  Certificate with  respect to  the
    shares of Buyer Common Stock represented thereby and no cash payment in lieu
    of fractional shares shall be paid to any such holder pursuant to subsection
    (e)  below until  the holder of  record of such  Certificate shall surrender
    such Certificate.  Subject  to  the effect  of  applicable  laws,  following
    surrender  of any such Certificate, there shall be paid to the record holder
    of the certificates representing whole  shares of Buyer Common Stock  issued
    in  exchange therefor, without interest, (i)  at the time of such surrender,
    the amount of any cash payable in lieu of a fractional share of Buyer Common
    Stock to which such holder is entitled pursuant to subsection (e) below  and
    the  amount of dividends or other distributions with a record date after the
    Effective Time previously paid  with respect to such  whole shares of  Buyer
    Common  Stock,  and (ii)  at  the appropriate  payment  date, the  amount of
    dividends or other distributions with a record date after the Effective Time
    but prior to surrender  and a payment date  subsequent to surrender  payable
    with respect to such whole shares of Buyer Common Stock.

        (d)  NO FURTHER OWNERSHIP RIGHTS IN CHIPCOM COMMON STOCK.  All shares of
    Buyer  Common  Stock issued  upon the  surrender for  exchange of  shares of
    Chipcom Common Stock in accordance with the terms hereof (including any cash
    paid pursuant to subsection (c) or (e) of this Section 2.2) shall be  deemed
    to  have been issued in  full satisfaction of all  rights pertaining to such
    shares  of  Chipcom  Common  Stock,  subject,  however,  to  the   Surviving
    Corporation's   obligation  to   pay  any   dividends  or   make  any  other
    distributions with a record date prior to the Effective Time which may  have
    been  declared or made by Chipcom on  such shares of Chipcom Common Stock in
    accordance with the terms of this Agreement  on or prior to the date  hereof
    and which remain unpaid at the Effective Time, and there shall be no further
    registration  of  transfers on  the stock  transfer  books of  the Surviving
    Corporation of the  shares of  Chipcom Common Stock  which were  outstanding
    immediately  prior  to the  Effective Time.  If,  after the  Effective Time,
    Certificates are presented to the Surviving Corporation for any reason, they
    shall be cancelled and exchanged as provided in this Section 2.2.

        (e)   NO  FRACTIONAL  SHARES.   No  certificate  or  scrip  representing
    fractional  shares of Buyer Common Stock  shall be issued upon the surrender
    for exchange of Certificates, and  such fractional share interests will  not
    entitle  the owner  thereof to  vote or  to any  rights of  a stockholder of
    Buyer. Notwithstanding any other provision of this Agreement, each holder of
    shares of Chipcom Common  Stock exchanged pursuant to  the Merger who  would
    otherwise  have been  entitled to  receive a  fraction of  a share  of Buyer
    Common Stock (after taking into  account all Certificates delivered by  such
    holder) shall receive, in lieu thereof, cash (without interest) in an amount
    equal to such fractional part of a share of Buyer Common Stock multiplied by
    the  average of  the last  reported sale  prices of  Buyer Common  Stock, as
    reported on the  Nasdaq National  Market, on each  of the  ten trading  days
    immediately preceding the date of the Effective Time.

        (f)   TERMINATION OF  EXCHANGE FUND.   Any portion of  the Exchange Fund
    which remains  undistributed to  the stockholders  of Chipcom  for one  year
    after  the Effective Time shall be delivered  to Buyer, upon demand, and any
    stockholders of Chipcom who have  not previously complied with this  Section
    2.2 shall thereafter look only to Buyer for payment of their claim for Buyer
    Common  Stock, any cash in lieu of  fractional shares of Buyer Common Stock,
    and any dividends or distributions with respect to Buyer Common Stock.

                                      A-4
<PAGE>
        (g)   NO LIABILITY.   Neither Buyer  nor Chipcom shall  be liable to any
    holder of shares of Chipcom Common Stock or Buyer Common Stock, as the  case
    may be, for such shares (or dividends or distributions with respect thereto)
    delivered  to  a  public  official  pursuant  to  any  applicable  abandoned
    property, escheat or similar law.

                                  ARTICLE III
                   REPRESENTATIONS AND WARRANTIES OF CHIPCOM

    Chipcom represents  and  warrants  to  Buyer and  Sub  that  the  statements
contained  in this Article III are true and  correct, except as set forth in the
disclosure schedule delivered by Chipcom to Buyer on or before the date of  this
Agreement  (the "Chipcom Disclosure Schedule").  The Chipcom Disclosure Schedule
shall be  arranged in  paragraphs  corresponding to  the numbered  and  lettered
paragraphs  contained in  this Article III  and the disclosure  in any paragraph
shall qualify only the corresponding paragraph in this Article III.

    Section 3.1   ORGANIZATION.   Each  of  Chipcom and  its Subsidiaries  is  a
corporation duly organized, validly existing and in good standing under the laws
of  the jurisdiction of its incorporation,  has all requisite corporate power to
own, lease and operate its  property and to carry on  its business as now  being
conducted  and as proposed to be conducted, and is duly qualified to do business
and is in good standing as a  foreign corporation in each jurisdiction in  which
the  failure to  be so  qualified would  have a  material adverse  effect on the
business, assets (including intangible  assets), financial condition or  results
of operations ("Material Adverse Effect") of Chipcom and its Subsidiaries, taken
as  a whole.  Except as  set forth  in the  Chipcom SEC  Reports (as  defined in
Section 3.4) or the Chipcom Disclosure Schedule, neither Chipcom nor any of  its
Subsidiaries  directly or indirectly owns any  equity or similar interest in, or
any  interest  convertible  into  or   exchangeable  or  exercisable  for,   any
corporation, partnership, joint venture or other business association or entity,
excluding  securities  in any  publicly traded  company  held for  investment by
Chipcom and comprising less than five  percent (5%) of the outstanding stock  of
such company.

    Section 3.2  CHIPCOM CAPITAL STRUCTURE.

    (a) The authorized capital stock of Chipcom consists of 36,000,000 shares of
Common  Stock, $.02 par value, and 1,500,000 shares of Preferred Stock, $.10 par
value ("Chipcom Preferred Stock"). As of June 30, 1995, (i) 17,073,045 shares of
Chipcom Common  Stock were  issued and  outstanding, all  of which  are  validly
issued,  fully paid  and nonassessable, (ii)  no shares of  Chipcom Common Stock
were held  in the  treasury of  Chipcom  or by  Subsidiaries of  Chipcom,  (iii)
2,230,405  shares  of Chipcom  Common Stock  were  reserved for  future issuance
pursuant to stock  options granted  and outstanding under  the Chipcom  Employee
Option  Plans, (iv)  132,500 shares  of Chipcom  Common Stock  were reserved for
future issuance  pursuant to  stock options  granted and  outstanding under  the
Chipcom  Director Option Plan, (v) approximately 75,000 shares of Chipcom Common
Stock were reserved for future issuance pursuant to rights outstanding under the
Chipcom Purchase Plans and (vi) 200,000 shares were reserved for future issuance
under  the  Chipcom  Restricted   Stock  Plan.  No   material  change  in   such
capitalization  has  occurred  between  June  30,  1995  and  the  date  of this
Agreement. As of  the date  of this  Agreement, none  of the  shares of  Chipcom
Preferred  Stock are issued and outstanding.  All shares of Chipcom Common Stock
subject to  issuance  as  specified  above,  upon  issuance  on  the  terms  and
conditions  specified in  the instruments pursuant  to which  they are issuable,
shall be duly authorized,  validly issued, fully  paid and nonassessable.  There
are  no  obligations,  contingent  or  otherwise,  of  Chipcom  or  any  of  its
Subsidiaries to repurchase, redeem  or otherwise acquire  any shares of  Chipcom
Common  Stock  or  the capital  stock  of  any Chipcom  Subsidiary  or  make any
investment (in the  form of a  loan, capital contribution  or otherwise) in  any
such Subsidiary or any other entity other than guarantees of bank obligations of
such  Subsidiaries entered into in  the ordinary course of  business. All of the
outstanding shares of capital stock of  each of Chipcom's Subsidiaries are  duly
authorized,  validly issued,  fully paid and  nonassessable and  all such shares

                                      A-5
<PAGE>
(other than directors' qualifying  shares in the  case of foreign  Subsidiaries)
are  owned  by Chipcom  or another  Subsidiary  free and  clear of  all security
interests, liens, claims, pledges,  agreements, limitations in Chipcom's  voting
rights, charges or other encumbrances of any nature.

    (b) Except as set forth in this Section 3.2 or as reserved for future grants
of  options under the Chipcom Employee Option Plans, the Chipcom Director Option
Plan or the Chipcom Purchase Plans, there are no equity securities of any  class
of  Chipcom or  any of  its Subsidiaries, or  any security  exchangeable into or
exercisable for  such  equity  securities,  issued,  reserved  for  issuance  or
outstanding.  Except  as  set  forth  in this  Section  3.2  or  in  the Chipcom
Disclosure Schedule, there are no  options, warrants, equity securities,  calls,
rights,  commitments or agreements of  any character to which  Chipcom or any of
its Subsidiaries is a party or by which it is bound obligating Chipcom or any of
its Subsidiaries to issue, deliver or sell, or cause to be issued, delivered  or
sold,  additional shares of capital stock of  Chipcom or any of its Subsidiaries
or obligating Chipcom or  any of its Subsidiaries  to grant, extend,  accelerate
the  vesting of or enter  into any such option,  warrant, equity security, call,
right, commitment or agreement. To the  best knowledge of Chipcom, there are  no
voting trusts, proxies or other agreements or understandings with respect to the
shares of capital stock of Chipcom.

    Section 3.3  AUTHORITY; NO CONFLICT; REQUIRED FILINGS AND CONSENTS.

    (a)  Chipcom has all  requisite corporate power and  authority to enter into
this  Agreement  and  to  consummate  the  transactions  contemplated  by   this
Agreement.  The execution and delivery of this Agreement and the consummation of
the transactions contemplated by this Agreement have been duly authorized by all
necessary corporate action on the part of Chipcom, subject only to the  approval
of  the Merger by Chipcom's stockholders under the DGCL. This Agreement has been
duly executed and  delivered by Chipcom  and constitutes the  valid and  binding
obligation  of Chipcom, enforceable in accordance with its terms, except as such
enforceability may be  limited by  (i) bankruptcy  laws and  other similar  laws
affecting  creditors' rights  generally and  (ii) general  principles of equity,
regardless of whether asserted in a proceeding in equity or at law.

    (b) The execution and  delivery of this Agreement  by Chipcom does not,  and
the  consummation of the  transactions contemplated by  this Agreement will not,
(i) conflict with, or result in any violation or breach of any provision of  the
Certificate  of Incorporation or Bylaws of Chipcom, (ii) result in any violation
or breach of, or constitute (with or without notice or lapse of time, or both) a
default (or give rise to a right of termination, cancellation or acceleration of
any obligation or loss  of any benefit)  under any of  the terms, conditions  or
provisions  of any  note, bond,  mortgage, indenture,  lease, contract  or other
agreement, instrument or obligation to which Chipcom or any of its  Subsidiaries
is  a party or by which any of them  or any of their properties or assets may be
bound, or (iii) conflict or violate any permit, concession, franchise,  license,
judgment,  order, decree, statute, law, ordinance, rule or regulation applicable
to Chipcom or  any of its  Subsidiaries or  any of their  properties or  assets,
except  in  the case  of  (ii) and  (iii)  for any  such  conflicts, violations,
defaults, terminations,  cancellations  or  accelerations  which  would  not  be
reasonably  likely  to  have  a  Material  Adverse  Effect  on  Chipcom  and its
Subsidiaries, taken as a whole, or a  material adverse effect on the ability  of
Chipcom to consummate the transactions contemplated by this Agreement.

    (c)  No  consent,  approval,  order or  authorization  of,  or registration,
declaration or filing with,  any court, administrative  agency or commission  or
other  governmental  authority  or  instrumentality  ("Governmental  Entity") is
required by or with respect to Chipcom or any of its Subsidiaries in  connection
with  the execution and  delivery of this  Agreement or the  consummation of the
transactions contemplated hereby, except  for (i) the  filing of the  pre-merger
notification  report under  the Hart-Scott-Rodino Antitrust  Improvements Act of
1976, as amended (the "HSR Act"), (ii)  the filing by Buyer of the  Registration
Statement  (as  defined  in  Section  3.17)  with  the  Securities  and Exchange
Commission ("SEC") in  accordance with the  Securities Act of  1933, as  amended
(the  "Securities Act"), (iii) the filing of  the Certificate of Merger with the
Delaware Secretary of  State in  accordance with DGCL,  (iv) the  filing of  the
Proxy Statement (as defined in Section 3.17) with the SEC in accordance with the
Securities  Exchange  Act of  1934, as  amended (the  "Exchange Act"),  (v) such

                                      A-6
<PAGE>
consents, approvals,  orders,  authorizations, registrations,  declarations  and
filings  as may be  required under applicable federal  and state securities laws
and  the  laws   of  any  foreign   country  and  (vi)   such  other   consents,
authorizations,  filings, approvals and registrations  which, if not obtained or
made, would  not be  reasonably likely  to  have a  Material Adverse  Effect  on
Chipcom and its Subsidiaries, taken as a whole.

    Section 3.4  SEC FILINGS; FINANCIAL STATEMENTS.

    (a)  Chipcom has filed  and made available  to Buyer all  forms, reports and
documents required to be filed by Chipcom with the SEC since December 31,  1992,
other  than registration  statements on Form  S-8 and the  unredacted version of
documents for which confidential  treatment has been granted  by the SEC or  for
which such treatment has been applied (collectively, the "Chipcom SEC Reports").
The Chipcom SEC Reports (i) at the time filed, complied in all material respects
with  the applicable requirements of the Securities Act and the Exchange Act, as
the case may be, and (ii) did not at the time they were filed (or if amended  or
superseded  by a filing prior to the date of this Agreement, then on the date of
such filing) contain any untrue statement of a material fact or omit to state  a
material  fact required to be stated in such Chipcom SEC Reports or necessary in
order to make the statements  in such Chipcom SEC Reports,  in the light of  the
circumstances  under which  they were  made, not  misleading. None  of Chipcom's
Subsidiaries is required to file any forms, reports or other documents with  the
SEC.

    (b)  Each of the consolidated financial statements (including, in each case,
any related notes) contained in the  Chipcom SEC Reports, including any  Chipcom
SEC  Reports filed after the date of  this Agreement until the Closing, complied
or will comply as to form in all material respects with the applicable published
rules and regulations of the SEC with  respect thereto, was or will be  prepared
in  accordance  with  generally  accepted  accounting  principles  applied  on a
consistent basis throughout the periods involved (except as may be indicated  in
the  notes to such financial statements or, in the case of unaudited statements,
as permitted by Form 10-Q of the  SEC) and fairly presented or will present  the
consolidated  financial  position  of Chipcom  and  its Subsidiaries  as  at the
respective dates and the consolidated results  of its operations and cash  flows
for   the  periods  indicated,  except  that  the  unaudited  interim  financial
statements were  or are  subject to  normal and  recurring year-end  adjustments
which  were not  or are  not expected  to be  material in  amount. The unaudited
balance sheet  of Chipcom  as of  June 30,  1995 is  referred to  herein as  the
"Chipcom Balance Sheet."

    Section  3.5  NO UNDISCLOSED LIABILITIES.  Except as disclosed in writing to
Buyer or as  otherwise disclosed  in the Chipcom  SEC Reports,  Chipcom and  its
Subsidiaries  do not have any liabilities, either accrued or contingent (whether
or not  required to  be reflected  in financial  statements in  accordance  with
generally  accepted accounting  principles), and whether  due or  to become due,
which individually or  in the aggregate,  would be reasonably  likely to have  a
Material Adverse Effect on Chipcom and its Subsidiaries, taken as a whole, other
than  (i) liabilities reflected  in the Chipcom  Balance Sheet, (ii) liabilities
specifically described in this Agreement, or in the Chipcom Disclosure Schedule,
and (iii) normal or  recurring liabilities incurred since  June 30, 1995 in  the
ordinary course of business consistent with past practices.

    Section  3.6  ABSENCE OF  CERTAIN CHANGES OR EVENTS.   Since the date of the
Chipcom Balance  Sheet,  Chipcom  and  its  Subsidiaries  have  conducted  their
businesses  only in  the ordinary  course and in  a manner  consistent with past
practice and,  since such  date, there  has not  been (i)  any material  adverse
change  in the financial condition, results of operations or business (together,
a "Material Adverse Change") of Chipcom and its Subsidiaries, taken as a  whole;
(ii)  any damage, destruction or loss (whether or not covered by insurance) with
respect to Chipcom or any of  its Subsidiaries having a Material Adverse  Effect
on  Chipcom and its Subsidiaries, taken as a whole; (iii) any material change by
Chipcom in its accounting  methods, principles or practices  to which Buyer  has
not  previously consented in writing; (iv) any  revaluation by Chipcom of any of
its assets having  a Material Adverse  Effect on Chipcom  and its  Subsidiaries,
taken  as  a whole,  including, without  limitation, writing  down the  value of
capitalized software or inventory  or writing off  notes or accounts  receivable
other than in

                                      A-7
<PAGE>
the  ordinary  course  of business,  unless  Buyer has  previously  consented in
writing; or (v)  except as  disclosed in  the Chipcom  Disclosure Schedule,  any
other  action or event that would have required the consent of Buyer pursuant to
Section 5.1 of this Agreement had such  action or event occurred after the  date
of this Agreement and that would be reasonably likely to have a Material Adverse
Effect on Chipcom and its Subsidiaries, taken as a whole.

    Section 3.7  TAXES.

    (a)  For the purposes of this  Agreement, a "Tax" or, collectively, "Taxes,"
means any and all material federal, state, local and foreign taxes,  assessments
and  other governmental charges, duties,  impositions and liabilities, including
taxes based upon or measured by gross receipts, income, profits, sales, use  and
occupation,  and  value  added, ad  valorem,  transfer,  franchise, withholding,
payroll, recapture, employment,  excise and  property taxes,  together with  all
interest,  penalties and additions imposed with  respect to such amounts and any
obligations under  any agreements  or arrangements  with any  other person  with
respect  to such amounts and including any  liability for taxes of a predecessor
entity.

    (b) Chipcom has accurately prepared  and timely filed all material  federal,
state,  local and foreign returns, estimates, information statements and reports
required to be filed at or before the Effective Time ("Returns") relating to any
and all Taxes concerning or attributable  to Chipcom or any of its  Subsidiaries
or  to their operations, and  such Returns are true  and correct in all material
respects and have  been completed in  all material respects  in accordance  with
applicable law.

    (c)  Chipcom as of  the Effective Time: (i)  will have paid  all Taxes it is
required to pay prior  to the Effective  Time and (ii)  will have withheld  with
respect  to its  employees all  federal and state  income taxes,  FICA, FUTA and
other Taxes  required to  be withheld,  except where  any failure  to make  such
payment or withholding would not be reasonably likely to have a Material Adverse
Effect on Chipcom and its Subsidiaries, taken as a whole.

    (d)  There is  no Tax deficiency  outstanding, proposed  or assessed against
Chipcom or any of its Subsidiaries that  is not reflected as a liability on  the
Chipcom  Balance Sheet nor has  Chipcom or any of  its Subsidiaries executed any
waiver of  any  statute  of limitations  on  or  extending the  period  for  the
assessment or collection of any Tax.

    (e)  Chipcom  does not  have any  material  liabilities for  unpaid federal,
state, local and foreign  Taxes that have  not been accrued  for or reserved  on
Chipcom Balance Sheet, whether asserted or unasserted, contingent or otherwise.

    Section  3.8  PROPERTIES.  Chipcom has provided or made available to Buyer a
true and complete list of all real property owned by Chipcom or its Subsidiaries
and real  property leased  by Chipcom  or its  Subsidiaries pursuant  to  leases
providing  for the occupancy, in each case,  of not less than 20,000 square feet
("Material Lease(s)"), and  the name  of the lessor,  the date  of the  Material
Lease  and each amendment to the Material  Lease and the aggregate annual rental
or other fee payable under any such Material Lease. All such Material Leases are
in good standing, valid and effective in accordance with their respective terms,
and neither Chipcom nor its Subsidiaries is in default under any of such leases,
except where the lack of such  good standing, validity and effectiveness or  the
existence  of such  default would  not be reasonably  likely to  have a Material
Adverse Effect on Chipcom and its Subsidiaries, taken as a whole.

    Section 3.9  INTELLECTUAL PROPERTY.

    (a) Chipcom owns, or is licensed or otherwise possesses legally  enforceable
rights  to use, all patents, trademarks,  trade names, service marks, copyrights
and mask  works,  any  applications  for  and  registrations  of  such  patents,
trademarks,  trade  names, service  marks, copyrights  and  mask works,  and all
processes,  formulae,  methods,   schematics,  technology,  know-how,   computer
software  programs  or  applications  and  tangible  or  intangible  proprietary
information or material that are necessary to conduct the business of Chipcom as
currently conducted, or planned to be  conducted, the absence of which would  be
reasonably  likely  to  have  a  Material  Adverse  Effect  on  Chipcom  and its

                                      A-8
<PAGE>
Subsidiaries, taken as  a whole  (the "Chipcom  Intellectual Property  Rights").
Schedule 3.9 of the Chipcom Disclosure Schedule lists (i) all patents and patent
applications  and all trademarks, registered copyrights, trade names and service
marks, which Chipcom considers  to be material to  its business and included  in
the  Chipcom Intellectual Property Rights,  including the jurisdictions in which
each such Chipcom Intellectual Property Right  has been issued or registered  or
in which any such application for such issuance and registration has been filed,
(ii)  all  material  licenses, sublicenses,  distribution  agreements  and other
agreements as  to which  Chipcom  or any  of its  Subsidiaries  is a  party  and
pursuant  to  which any  person is  authorized to  use any  Chipcom Intellectual
Property Rights or has  the right to manufacture,  reproduce, market or  exploit
any  Chipcom product or any adaptation,  translation or derivative work based on
an Chipcom  product  or  any  portion  thereof,  (iii)  all  material  licenses,
sublicenses  and other agreements as to which Chipcom or any of its Subsidiaries
is a  party  and  pursuant to  which  Chipcom  or any  of  its  Subsidiaries  is
authorized  to use any third party  patents, trademarks or copyrights, including
software  ("Chipcom  Third  Party  Intellectual  Property  Rights")  which   are
incorporated  in, are, or form a part of any Chipcom product that is material to
the business of Chipcom  and its Subsidiaries,  taken as a  whole, and (iv)  all
material  joint  development  agreements  as  to which  Chipcom  or  any  of its
Subsidiaries is a party.

    (b) Chipcom is not, nor will it be as a result of the execution and delivery
of this Agreement or the performance of its obligations under this Agreement, in
breach of any  license, sublicense or  other agreement relating  to the  Chipcom
Intellectual  Property  Rights  or  Chipcom  Third  Party  Intellectual Property
Rights, the  breach of  which would  be  reasonably likely  to have  a  Material
Adverse Effect on Chipcom and its Subsidiaries, taken as a whole.

    (c)  To  Chipcom's knowledge,  all  patents, registered  trademarks, service
marks and copyrights held by  Chipcom or any of  its Subsidiaries are valid  and
subsisting.  Except  as set  forth  on Schedule  3.9  of the  Chipcom Disclosure
Schedule, Chipcom (i) has not been sued in any suit, action or proceeding  which
involves  a claim  of infringement  of any  patents, trademarks,  service marks,
copyrights or violation of  any trade secret or  other proprietary right of  any
third  party;  and  (ii) has  no  knowledge that  the  manufacturing, marketing,
licensing or sale of its products infringes any patent, trademark, service mark,
copyright, trade secret  or other proprietary  right of any  third party,  which
such infringement would reasonably be expected to have a Material Adverse Effect
on Chipcom and its Subsidiaries, taken as a whole.

    Section  3.10    AGREEMENTS, CONTRACTS  AND  COMMITMENTS.   Chipcom  has not
breached, or received in writing any claim  or threat that it has breached,  any
of  the terms  or conditions of  any material agreement,  contract or commitment
filed as an exhibit to the Chipcom SEC Reports ("Chipcom Material Contracts") in
such a manner as would permit any other party to cancel or terminate the same or
would permit any other party to collect material damages from Chipcom under  any
Chipcom  Material Contract. Each Chipcom Material  Contract that has not expired
or been  terminated is  in full  force  and effect  and is  not subject  to  any
material  default thereunder of which Chipcom is aware by any party obligated to
Chipcom pursuant to such Chipcom Material Contract.

    Section 3.11  LITIGATION.  Except  as described in the Chipcom SEC  Reports,
there  is no  action, suit  or proceeding,  claim, arbitration  or investigation
against Chipcom pending or as to  which Chipcom has received any written  notice
of  assertion, which is reasonably  likely to have a  Material Adverse Effect on
Chipcom and its Subsidiaries, taken as a whole, or a material adverse effect  on
the  ability  of Chipcom  to consummate  the  transactions contemplated  by this
Agreement.

    Section 3.12  ENVIRONMENTAL MATTERS.

    (a) As  of the  date hereof,  to the  knowledge of  Chipcom, no  underground
storage  tanks  are  present under  any  property  that Chipcom  or  any  of its
Subsidiaries has at any time owned, operated, occupied or leased. As of the date
hereof, except as  set forth  in the  Chipcom Disclosure  Schedule, no  material
amount  of any substance that has been  designated by any Governmental Entity or
by applicable federal, state or local law to be radioactive, toxic, hazardous or
otherwise a danger to health or the environment, including, without  limitation,
PCBs, asbestos, petroleum, urea-formaldehyde and

                                      A-9
<PAGE>
all  substances  listed as  hazardous substances  pursuant to  the Comprehensive
Environmental Response, Compensation, and Liability Act of 1980, as amended,  or
defined as a hazardous waste pursuant to the United States Resource Conservation
and  Recovery Act of 1976, as  amended, and the regulations promulgated pursuant
to said laws (a "Hazardous Material"), are present as a result of the actions of
Chipcom or  any of  its  Subsidiaries, or  any actions  of  any third  party  or
otherwise,   in,  on  or  under  any   property,  including  the  land  and  the
improvements, ground  water  and surface  water,  that  Chipcom or  any  of  its
Subsidiaries  has at  any time  owned, operated,  occupied or  leased, where the
presence of such  Hazardous Material  is reasonably  likely to  have a  Material
Adverse Effect on Chipcom and its Subsidiaries, taken as a whole.

    (b)  At no time has Chipcom or  any of its Subsidiaries transported, stored,
used, manufactured, disposed of, released or exposed its employees or others  to
Hazardous  Materials in violation of any law  in effect on or before the Closing
Date, nor has Chipcom or any of its Subsidiaries disposed of, transported, sold,
or manufactured  any  product  containing a  Hazardous  Material  (collectively,
"Hazardous  Materials Activities") in violation  of any rule, regulation, treaty
or statute  promulgated by  any  Governmental Entity  to prohibit,  regulate  or
control  Hazardous Materials or any Hazardous Material Activity which has had or
is reasonably  likely to  have a  Material  Adverse Effect  on Chipcom  and  its
Subsidiaries, taken as a whole.

    (c)  Chipcom currently holds all environmental approvals, permits, licenses,
clearances and consents (the "Environmental Permits") necessary for the  conduct
of  its Hazardous  Material Activities and  other businesses of  Chipcom as such
activities and businesses are  currently being conducted,  the absence of  which
would  be reasonably likely to have a Material Adverse Effect on Chipcom and its
Subsidiaries, taken as a whole.

    (d) No action, proceeding, revocation proceeding, amendment procedure, writ,
injunction or  claim is  pending or,  to the  knowledge of  Chipcom,  threatened
concerning  any  Environmental Permit  or  any Hazardous  Materials  Activity of
Chipcom or  any  of its  Subsidiaries.  Chipcom is  not  aware of  any  fact  or
circumstance  which  could involve  Chipcom in  any environmental  litigation or
impose upon Chipcom any environmental liability which would be reasonably likely
to have a Material Adverse  Effect on Chipcom and  its Subsidiaries, taken as  a
whole.

    Section 3.13  EMPLOYEE BENEFIT PLANS.

    (a)  Chipcom  has  set forth  on  Schedule  3.13 of  the  Chipcom Disclosure
Schedule all employee benefit plans (as defined in Section 3(3) of the  Employee
Retirement  Income Security  Act of 1974,  as amended ("ERISA"))  and all bonus,
stock option,  stock purchase,  incentive, deferred  compensation,  supplemental
retirement,  severance  and  other  similar  employee  benefit  plans,  and  all
unexpired severance agreements,  written or  otherwise, for the  benefit of,  or
relating  to, any current or former employee of Chipcom or any trade or business
(whether or not incorporated) which is a member or which is under common control
with Chipcom  within  the  meaning  of  Section  414  of  the  Code  (an  "ERISA
Affiliate") (together, the "Chipcom Employee Plans").

    (b)  With respect to each Chipcom  Employee Plan, Chipcom has made available
to Buyer, a true  and correct copy  of (i) the most  recent annual report  (Form
5500)  filed  with  the  Internal Revenue  Service  ("IRS"),  (ii)  such Chipcom
Employee Plan, (iii) each  trust agreement and group  annuity contract, if  any,
relating to such Chipcom Employee Plan and (iv) the most recent actuarial report
or valuation relating to a Chipcom Employee Plan subject to Title IV of ERISA.

    (c)  With respect  to the  Chipcom Employee  Plans, individually  and in the
aggregate, no event has occurred, and to the knowledge of Chipcom, there  exists
no  condition or set of circumstances in  connection with which Chipcom could be
subject to any liability  that is reasonably likely  to have a Material  Adverse
Effect  on Chipcom and its Subsidiaries, taken as a whole, under ERISA, the Code
or any other applicable law.

    (d) With respect  to the  Chipcom Employee  Plans, individually  and in  the
aggregate,  there are no funded benefit obligations for which contributions have
not been made or properly accrued and there

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<PAGE>
are no  unfunded  benefit obligations  which  have  not been  accounted  for  by
reserves,  or otherwise properly footnoted in accordance with generally accepted
accounting principles, on the financial statements of Chipcom, which obligations
are reasonably expected  to have a  Material Adverse Effect  on Chipcom and  its
Subsidiaries, taken as a whole.

    (e)  Except as set forth in Schedule 3.13 of the Chipcom Disclosure Schedule
or as  disclosed  in  Chipcom SEC  Reports  filed  prior to  the  date  of  this
Agreement, and except as provided for in this Agreement, neither Chipcom nor any
of  its Subsidiaries is a  party to any oral or  written (i) union or collective
bargaining agreement, (ii) agreement with any  officer or other key employee  of
Chipcom or any of its Subsidiaries, the benefits of which are contingent, or the
terms  of which  are materially  altered, upon  the occurrence  of a transaction
involving Chipcom of the nature contemplated by this Agreement, (iii)  agreement
with  any officer  of Chipcom providing  any term of  employment or compensation
guarantee extending for a period  longer than one year  from the date hereof  or
for  the  payment of  compensation  in excess  of  $100,000 per  annum,  or (iv)
agreement or plan,  including any  stock option plan,  stock appreciation  right
plan, restricted stock plan or stock purchase plan, any of the benefits of which
will  be increased, or the vesting of the benefits of which will be accelerated,
by the occurrence of any of  the transactions contemplated by this Agreement  or
the value of any of the benefits of which will be calculated on the basis of any
of the transactions contemplated by this Agreement.

    Section  3.14  COMPLIANCE WITH  LAWS.  Chipcom has  complied with, is not in
violation of, and has not received any notices of violation with respect to, any
federal, state or local statute, law  or regulation with respect to the  conduct
of  its business,  or the  ownership or  operation of  its business,  except for
failures to comply or violations which would not be reasonably likely to have  a
Material Adverse Effect on Chipcom and its Subsidiaries, taken as a whole.

    Section  3.15  POOLING OF INTERESTS.   To its knowledge, neither Chipcom nor
any of its Affiliates (as defined in Section 6.11) has, through the date of this
Agreement, taken or  agreed to take  any action which  would prevent Buyer  from
accounting  for  the business  combination to  be  effected by  the Merger  as a
pooling of interests.

    Section 3.16    INTERESTED PARTY  TRANSACTIONS.    Except as  set  forth  in
Schedule  3.16 of the Chipcom Disclosure Schedule or in the Chipcom SEC Reports,
since the date of Chipcom's last  proxy statement to its stockholders, no  event
has  occurred that  would be  required to  be reported  by Chipcom  as a Certain
Relationship or  Related Transaction,  pursuant to  Item 404  of Regulation  S-K
promulgated by the SEC.

    Section  3.17    REGISTRATION STATEMENT:  PROXY  STATEMENT/PROSPECTUS.   The
information supplied by Chipcom for  inclusion in the registration statement  on
Form  S-4 pursuant to  which shares of  Buyer Common Stock  issued in the Merger
will be registered with the SEC (the "Registration Statement"), shall not at the
time the Registration  Statement is declared  effective by the  SEC contain  any
untrue  statement of a material fact or omit to state any material fact required
to be stated in  the Registration Statement  or necessary in  order to make  the
statements  in the Registration  Statement, in light  of the circumstances under
which they were made,  not misleading. The information  supplied by Chipcom  for
inclusion  in the proxy statement/prospectus (the  "Proxy Statement") to be sent
to the  stockholders of  Chipcom in  connection with  the meeting  of  Chipcom's
stockholders   to  consider  this   Agreement  and  the   Merger  (the  "Chipcom
Stockholders' Meeting") shall  not, on  the date  the Proxy  Statement is  first
mailed  to stockholders  of Chipcom,  at the  time of  the Chipcom Stockholders'
Meeting and at the Effective Time, contain any statement which, at such time and
in light of the circumstances  under which it was  made, is false or  misleading
with  respect to any material fact, or omit to state any material fact necessary
in order  to make  the  statements made  in the  Proxy  Statement not  false  or
misleading;  or  omit  to  state  any material  fact  necessary  to  correct any
statement in  any earlier  communication  with respect  to the  solicitation  of
proxies  for  the  Chipcom  Stockholders' Meetings  which  has  become  false or
misleading. If at any  time prior to  the Effective Time  any event relating  to

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Chipcom  or any of its Affiliates, officers or directors should be discovered by
Chipcom which should be set forth in an amendment to the Registration  Statement
or a supplement to the Proxy Statement, Chipcom shall promptly inform Buyer.

    Section  3.18   OPINION  OF  FINANCIAL ADVISOR.    The financial  advisor of
Chipcom, Wessels, Arnold & Henderson, has delivered to Chipcom an opinion  dated
the date of this Agreement to the effect that the Conversion Number is fair from
a financial point of view to the stockholders of Chipcom.

    Section  3.19    SECTION 203  OF  THE DGCL  NOT  APPLICABLE.   The  Board of
Directors of Chipcom has taken all actions so that the restrictions contained in
Section 203 of the  DGCL applicable to a  "business combination" (as defined  in
Section  203) will not apply  to the execution, delivery  or performance of this
Agreement  or  the  consummation  of  the  Merger  or  the  other   transactions
contemplated by this Agreement.

                                   ARTICLE IV
                REPRESENTATIONS AND WARRANTIES OF BUYER AND SUB

    Buyer and Sub represent and warrant to Chipcom that the statements contained
in  this Article IV are true and correct,  except as set forth in the disclosure
schedule delivered by Buyer to Chipcom on  or before the date of this  Agreement
(the  "Buyer  Disclosure  Schedule").  The Buyer  Disclosure  Schedule  shall be
arranged in paragraphs  corresponding to  the numbered  and lettered  paragraphs
contained  in this Article IV and the  disclosure in any paragraph shall qualify
only the corresponding paragraph in this Article IV.

    Section 4.1  ORGANIZATION OF THE COMPANY.  Each of Buyer and Sub and Buyer's
other Subsidiaries is a corporation duly organized, validly existing and in good
standing under  the laws  of  the jurisdiction  of  its incorporation,  has  all
requisite corporate power to own, lease and operate its property and to carry on
its business as now being conducted and as proposed to be conducted, and is duly
qualified  to do business  and is in  good standing as  a foreign corporation in
each jurisdiction in which the failure to be so qualified would have a  Material
Adverse  Effect on Buyer and  its Subsidiaries, taken as  a whole. Except as set
forth in  the  Buyer SEC  Reports  (as defined  in  Section 4.4)  or  the  Buyer
Disclosure  Schedule,  neither Buyer  nor any  of  its Subsidiaries  directly or
indirectly owns any equity or similar  interest in, or any interest  convertible
into  or exchangeable  or exercisable  for, any  corporation, partnership, joint
venture or other  business association  or entity, excluding  securities in  any
publicly  traded company held  for investment by Buyer  and comprising less than
five percent (5%) of the outstanding stock of such company.

    Section 4.2  BUYER CAPITAL STRUCTURE.

    (a) The authorized capital stock of Buyer consists of 200,000,000 shares  of
Common  Stock, no  par value,  and 3,000,000 shares  of Preferred  Stock, no par
value ("Buyer Preferred Stock").  As of May 31,  1995, (i) 69,230,946 shares  of
Buyer Common Stock were issued and outstanding, all of which are validly issued,
fully  paid and nonassessable, (ii) no shares of Buyer Common Stock were held in
the treasury of Buyer or by Subsidiaries of Buyer, (iii) approximately 5,100,000
shares of Buyer Common Stock were reserved for future issuance pursuant to stock
options granted and  outstanding under  Buyer's stock option  plans (the  "Buyer
Option  Plans"), (iv)  approximately 629,000 shares  of Buyer  Common Stock were
reserved for  future  issuance  pursuant to  rights  outstanding  under  Buyer's
employee  stock purchase plan (the "Buyer Purchase Plan") and (v) 143,000 shares
were reserved  for future  issuance  under Buyer's  Restricted Stock  Plan  (the
"Buyer  Restricted Stock Plan").  No material change  in such capitalization has
occurred between May 31, 1995, and the date of this Agreement. As of the date of
this Agreement,  none of  the shares  of Buyer  Preferred Stock  are issued  and
outstanding.  All shares of Buyer Common  Stock subject to issuance as specified
above, upon issuance on  the terms and conditions  specified in the  instruments
pursuant  to which they were issuable, shall be duly authorized, validly issued,
fully paid and nonassessable. There are no obligations, contingent or otherwise,
of Buyer or any of its  Subsidiaries to repurchase, redeem or otherwise  acquire
any shares

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<PAGE>
of Buyer Common Stock or the capital stock of any Subsidiary or to provide funds
to  or  make any  investment (in  the form  of a  loan, capital  contribution or
otherwise) in any such Subsidiary or  any other entity other than guarantees  of
bank  obligations  of  Subsidiaries  entered  into  in  the  ordinary  course of
business. All of  the outstanding  shares of capital  stock of  each of  Buyer's
Subsidiaries  is duly authorized,  validly issued, fully  paid and nonassessable
and all such  shares (other  than directors' qualifying  shares in  the case  of
foreign subsidiaries) are owned by Buyer or another Subsidiary free and clear of
all  security  interests,  liens, claims,  pledges,  agreements,  limitations in
Buyer's voting rights, charges or other encumbrances of any nature.

    (b) Except as set forth in this Section 4.2 or as reserved for future grants
of options under the Buyer Option Plan or the Buyer Purchase Plan, there are  no
equity  securities of  any class  of Buyer  or any  of its  Subsidiaries, or any
security exchangeable into  or exercisable for  such equity securities,  issued,
reserved for issuance or outstanding. Except as set forth in this Section 4.2 or
in  the  Buyer  Disclosure  Schedule, there  are  no  options,  warrants, equity
securities, calls, rights, commitments or  agreements of any character to  which
Buyer  or any of its Subsidiaries is a  party or by which it is bound obligating
Buyer or any  of its  Subsidiaries to  issue, deliver or  sell, or  cause to  be
issued, delivered or sold, additional shares of capital stock of Buyer or any of
its  Subsidiaries  or obligating  Buyer  or any  of  its Subsidiaries  to grant,
extend, accelerate the vesting of or enter into any such option, warrant, equity
security, call, right, commitment or agreement. To the best knowledge of  Buyer,
there  are no voting trusts, proxies  or other agreements or understandings with
respect to the shares of capital stock of Buyer.

    Section 4.3  AUTHORITY; NO CONFLICT; REQUIRED FILINGS AND CONSENTS.

    (a) Buyer has all requisite corporate power and authority to enter into this
Agreement and to consummate the transactions contemplated by this Agreement. The
execution  and  delivery  of  this   Agreement  and  the  consummation  of   the
transactions  contemplated by  this Agreement have  been duly  authorized by all
necessary corporate action on  the part of Buyer.  This Agreement has been  duly
executed and delivered by Buyer and constitutes the valid and binding obligation
of   Buyer,  enforceable   in  accordance  with   its  terms,   except  as  such
enforceability may be  limited by  (i) bankruptcy  laws and  other similar  laws
affecting  creditors' rights  generally and  (ii) general  principles of equity,
regardless of whether asserted in a proceeding in equity or at law.

    (b) The execution and delivery of this Agreement by Buyer does not, and  the
consummation  of the transactions  contemplated by this  Agreement will not, (i)
conflict with, or  result in any  violation or  breach of any  provision of  the
Articles  of Incorporation or Bylaws  of Buyer, (ii) result  in any violation or
breach of, or constitute (with  or without notice or lapse  of time, or both)  a
default (or give rise to a right of termination, cancellation or acceleration of
any  obligation  or  loss of  any  material  benefit) under  any  of  the terms,
conditions or provisions of any note, bond, mortgage, indenture, lease, contract
or other  agreement, instrument  or obligation  to  which Buyer  or any  of  its
Subsidiaries  is a party or by  which any of them or  any of their properties or
assets may  be bound,  or  (iii) conflict  or  violate any  permit,  concession,
franchise,  license, judgment, order,  decree, statute, law,  ordinance, rule or
regulation applicable to Buyer or any of its Subsidiaries or any of its or their
properties or  assets,  except in  the  case of  (ii)  and (iii)  for  any  such
conflicts,  violations, defaults,  terminations, cancellations  or accelerations
which would not be reasonably likely to have a Material Adverse Effect on  Buyer
and its Subsidiaries, taken as a whole.

    (c)  No  consent,  approval,  order or  authorization  of,  or registration,
declaration or  filing with,  any Governmental  Entity is  required by  or  with
respect to Buyer or any of its Subsidiaries in connection with the execution and
delivery   of   this   Agreement   or   the   consummation   of   the   transac-
tions  contemplated  hereby,  except  for  (i)  the  filing  of  the  pre-merger
notification  report  under  the  HSR  Act,  (ii)  the  filing  of  a  form  S-4
Registration Statement with the SEC in accordance with the Securities Act, (iii)
the filing of the Certificate of Merger with the Delaware Secretary of State  in
accordance with the DGCL, (iv) such consents, approvals, orders, authorizations,
registrations,  declarations  and filings  as may  be required  under applicable
federal  and   state   securities   laws   and   the   laws   of   any   foreign

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<PAGE>
country  and  (v) such  other consents,  authorizations, filings,  approvals and
registrations which, if not obtained or made, would not be reasonably likely  to
have a Material Adverse Effect on Buyer and its Subsidiaries, taken as a whole.

    Section 4.4  SEC FILINGS; FINANCIAL STATEMENTS.

    (a)  Buyer has filed  and made available  to Chipcom all  forms, reports and
documents required to be filed  by Buyer with the  SEC since December 31,  1992,
other  than registration  statements on Form  S-8 and the  unredacted version of
documents for which confidential  treatment has been granted  by the SEC or  for
which  such treatment has been applied  (collectively, the "Buyer SEC Reports").
The Buyer SEC Reports (i) at the  time filed, complied in all material  respects
with  the applicable requirements of the Securities Act and the Exchange Act, as
the case may be, and (ii) did not at the time they were filed (or if amended  or
superseded  by a filing prior to the date of this Agreement, then on the date of
such filing) contain any untrue statement of a material fact or omit to state  a
material  fact required to be  stated in such Buyer  SEC Reports or necessary in
order to make  the statements in  such Buyer SEC  Reports, in the  light of  the
circumstances  under  which  they were  made,  not misleading.  None  of Buyer's
Subsidiaries is required to file any forms, reports or other documents with  the
SEC.

    (b)  Each of the consolidated financial statements (including, in each case,
any related notes) contained in the  Buyer SEC Reports, including any Buyer  SEC
Reports  filed after the date  of this Agreement until  the Closing, complied or
will comply as to  form in all material  respects with the applicable  published
rules  and regulations of the SEC with  respect thereto, was or will be prepared
in accordance  with  generally  accepted  accounting  principles  applied  on  a
consistent  basis throughout the periods involved (except as may be indicated in
the notes to such financial statements or, in the case of unaudited  statements,
as  permitted by Form 10-Q of the SEC)  and fairly presented or will present the
consolidated financial  position  of  Buyer  and  its  Subsidiaries  as  at  the
respective  dates and the consolidated results  of its operations and cash flows
for  the  periods  indicated,  except  that  the  unaudited  interim   financial
statements  were or  are subject  to normal  and recurring  year-end adjustments
which were not  or are  not expected  to be  material in  amount. The  unaudited
balance  sheet of Buyer as of  May 31, 1995 is referred  to herein as the "Buyer
Balance Sheet."

    Section 4.5  NO UNDISCLOSED LIABILITIES.  Except as disclosed in writing  to
Chipcom  or  as otherwise  disclosed in  the  Buyer SEC  Reports, Buyer  and its
Subsidiaries do not have any liabilities, either accrued or contingent  (whether
or  not  required to  be reflected  in financial  statements in  accordance with
generally accepted accounting  principles), and  whether due or  to become  due,
which  individually or  in the  aggregate would be  reasonably likely  to have a
Material Adverse Effect on Buyer and  its Subsidiaries, taken as a whole,  other
than  (i) liabilities  reflected in  the Buyer  Balance Sheet,  (ii) liabilities
specifically described in this Agreement,  or in the Buyer Disclosure  Schedule,
and  (iii) normal or  recurring liabilities incurred  since May 31,  1995 in the
ordinary course of business consistent with past practices.

    Section 4.6  ABSENCE OF  CERTAIN CHANGES OR EVENTS.   Since the date of  the
Buyer  Balance Sheet, Buyer and its Subsidiaries have conducted their businesses
only in the ordinary course and in  a manner consistent with past practice  and,
since such date, there has not been (i) any Material Adverse Change of Buyer and
any  of its Subsidiaries, taken as a whole; (ii) any damage, destruction or loss
(whether or  not covered  by insurance)  with respect  to Buyer  or any  of  its
Subsidiaries  having a  material Adverse Effect  on Buyer  and its Subsidiaries,
taken as a whole; (iii) any material change by Buyer in its accounting  methods,
principles  or  practices  to  which Chipcom  has  not  previously  consented in
writing; (iv) any revaluation by  Buyer of any of  its assets having a  Material
Adverse  Effect  on Buyer  and its  Subsidiaries, taken  as a  whole, including,
without limitation, writing down the value of capitalized software or  inventory
or writing off notes or accounts receivable other than in the ordinary course of
business,  unless Chipcom has previously consented  in writing; or (v) except as
disclosed in the Buyer Disclosure Schedule, any other action or event that would
have required the consent of

                                      A-14
<PAGE>
Chipcom pursuant  to Section  5.1 of  this Agreement  had such  action or  event
occurred after the date of this Agreement and that would be reasonably likely to
have a Material Adverse Effect on Buyer and its Subsidiaries, taken as a whole.

    Section 4.7  TAXES.

    (a)  Buyer has  accurately prepared and  timely filed  all material required
Returns relating to any and all Taxes concerning or attributable to Buyer or its
operations and such Returns  are true and correct  in all material respects  and
have been completed in all material respects in accordance with applicable law.

    (b)  Buyer as  of the  Effective Time: (i)  will have  paid all  Taxes it is
required to pay prior  to the Effective  Time and (ii)  will have withheld  with
respect  to its  employees all  federal and state  income taxes,  FICA, FUTA and
other Taxes  required to  be withheld,  except where  any failure  to make  such
payment or withholding would not be reasonably likely to have a Material Adverse
Effect on Buyer and its Subsidiaries, take as a whole.

    (c)  There is  no Tax deficiency  outstanding, proposed  or assessed against
Buyer that is not reflected  as a liability on the  Buyer Balance Sheet nor  has
Buyer  executed any  waiver of  any statute of  limitations on  or extending the
period for the assessment or collection of any Tax.

    (d) Buyer does not have any material liabilities for unpaid federal,  state,
local  and foreign  Taxes that have  not been  accrued for or  reserved on Buyer
Balance Sheet, whether asserted or unasserted, contingent or otherwise.

    Section 4.8  PROPERTIES.  All Material Leases under which Buyer leases  real
property  are in  good standing,  valid and  effective in  accordance with their
respective terms, and Buyer is not in default under any of such Material Leases,
except where the lack of such  good standing, validity and effectiveness or  the
existence  of such  default would  not be reasonably  likely to  have a Material
Adverse Effect on Buyer and its Subsidiaries, taken as a whole.

    Section 4.9  INTELLECTUAL PROPERTY.

    (a) Buyer owns, or  is licensed or  otherwise possesses legally  enforceable
rights  to use, all patents, trademarks,  trade names, service marks, copyrights
and mask  works,  any  applications  for  and  registrations  of  such  patents,
trademarks,  trade  names, service  marks, copyrights  and  mask works,  and all
processes,  formulae,  methods,   schematics,  technology,  know-how,   computer
software  programs  or  applications,  and  tangible  or  intangible proprietary
information or material that are necessary  to conduct the business of Buyer  as
currently  conducted or planned to  be conducted, the absence  of which would be
reasonably  likely  to  have  a  Material  Adverse  Effect  on  Buyer  and   its
Subsidiaries, taken as a whole (the "Buyer Intellectual Property Rights").

    (b)  Buyer is not, nor will it be  as a result of the execution and delivery
of this Agreement or the performance of its obligations under this Agreement, in
breach of  any license,  sublicense or  other agreement  relating to  the  Buyer
Intellectual  Property  Rights  or  any material  license,  sublicense  or other
agreement pursuant to which Buyer is authorized to use any third party  patents,
trademarks  or copyrights, including software, which are incorporated in, are or
form a part of any Buyer product that is material to its business, the breach of
which would be reasonably likely to have a Material Adverse Effect on Buyer  and
its Subsidiaries, taken as a whole.

    (c)  To Buyer's knowledge, all patents, registered trademarks, service marks
and copyrights held by Buyer or any of its Subsidiaries which Buyer considers to
be material to  its business are  valid and subsisting.  Buyer has no  knowledge
that  the manufacturing, marketing, licensing or  sale of its products infringes
any  patent,  trademark,  service  mark,   copyright,  trade  secret  or   other
proprietary  right of  any third party,  which infringement  would be reasonably
likely to have a Material Adverse Effect on Buyer and its Subsidiaries, taken as
a whole.

    Section 4.10    AGREEMENTS,  CONTRACTS  AND  COMMITMENTS.    Buyer  has  not
breached,  or received in writing any claim  or threat that it has breached, any
of the terms or conditions of any material

                                      A-15
<PAGE>
agreement, contract or commitment filed as  an exhibit to the Buyer SEC  Reports
("Buyer Material Contracts") in such a manner as would permit any other party to
cancel  or terminate the same  or would permit any  other party to seek material
damages from  Buyer  under any  Buyer  Material Contract.  Each  Buyer  Material
Contract that has not expired or been terminated is in full force and effect and
is not subject to any material default thereunder of which Buyer is aware by any
party obligated to Buyer pursuant to such Buyer Material Contract.

    Section  4.11  LITIGATION.   Except as  described in the  Buyer SEC Reports,
there is  no action,  suit or  proceeding, claim,  arbitration or  investigation
against  Buyer pending or as  to which Buyer has  received any written notice of
assertion, which is reasonably likely to have a Material Adverse Effect on Buyer
and its Subsidiaries,  taken as a  whole, or  a material adverse  effect on  the
ability of Buyer to consummate the transactions contemplated by this Agreement.

    Section 4.12  ENVIRONMENTAL MATTERS.

    (a) As of the date hereof, to the knowledge of Buyer, no underground storage
tanks  are present under any property that  Buyer or any of its Subsidiaries has
at any time owned,  operated, occupied or  leased. As of  the date hereof  other
than  as set forth in  the Buyer Disclosure Schedule,  no material amount of any
Hazardous Material are  present as  a result  of the  actions of  Buyer, or,  to
Buyer's  knowledge, as a result of any  actions of any third party or otherwise,
in, on or under  any property, including the  land and the improvements,  ground
water  and surface water, that Buyer or any  of its Subsidiaries has at any time
owned, operated,  occupied  or leased,  where  the presence  of  such  Hazardous
Materials  is reasonably likely to  have a Material Adverse  Effect on Buyer and
its Subsidiaries, taken as a whole.

    (b) At no time  has Buyer or  any of its  Subsidiaries engaged in  Hazardous
Materials  Activities in  violation of any  rule, regulation,  treaty or statute
promulgated  by  any  Governmental  Entity  to  prohibit,  regulate  or  control
Hazardous  Materials  or any  Hazardous Material  Activity which  has had  or is
reasonably  likely  to  have  a  Material  Adverse  Effect  on  Buyer  and   its
Subsidiaries, taken as a whole.

    (c)  Buyer  currently  holds  all Environmental  Permits  necessary  for the
conduct of its Hazardous  Material Activities and other  businesses of Buyer  as
such  activities and  businesses are currently  being conducted,  the absence of
which would be reasonably likely to have a Material Adverse Effect on Buyer  and
its Subsidiaries, taken as a whole.

    (d) No action, proceeding, revocation proceeding, amendment procedure, writ,
injunction  or  claim  is pending  or,  to  the knowledge  of  Buyer, threatened
concerning any  Environmental  Permit or  any  Hazardous Materials  Activity  of
Buyer.  Buyer is not aware of any fact or circumstance which could involve Buyer
in  any  environmental  litigation  or  impose  upon  Buyer  any   environmental
liability, which would be reasonably likely to have a Material Adverse Effect on
Buyer and its Subsidiaries, taken as a whole.

    Section 4.13  EMPLOYEE BENEFIT PLANS.

    (a)  Buyer  has made  available to  Chipcom all  employee benefit  plans (as
defined in Section 3(3) of ERISA)  and all bonus, stock option, stock  purchase,
incentive,  deferred compensation, supplemental  retirement, severance and other
similar employee benefit plans, and all unexpired severance agreements,  written
or otherwise, for the benefit of, or relating to, any current or former employee
of Buyer or any ERISA Affiliate of Buyer (together, the "Buyer Employee Plans").

    (b)  With respect to each  Buyer Employee Plan, Buyer  has made available to
Chipcom, a true  and correct copy  of (i)  the most recent  annual report  (Form
5500)  filed  with the  IRS, (ii)  such  Buyer Employee  Plan, (iii)  each trust
agreement and group annuity  contract, if any, relating  to such Buyer  Employee
Plan  and (iv) the most recent actuarial report or valuation relating to a Buyer
Employee Plan subject to Title IV of ERISA.

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<PAGE>
    (c) With  respect to  the  Buyer Employee  Plans,  individually and  in  the
aggregate, no event has occurred, and to the knowledge of Buyer, there exists no
condition  or  set of  circumstances  in connection  with  which Buyer  could be
subject to any liability that is reasonably expected to have a Material  Adverse
Effect on Buyer and its Subsidiaries, taken as a whole, under ERISA, the Code or
any other applicable law.

    (d)  With  respect to  the  Buyer Employee  Plans,  individually and  in the
aggregate, there are no funded benefit obligations for which contributions  have
not  been made or properly accrued and there are no unfunded benefit obligations
which have not been accounted for  by reserves, or otherwise properly  footnoted
in  accordance with generally  accepted accounting principles,  on the financial
statements of  Buyer,  which  obligations  are reasonably  expected  to  have  a
Material Adverse Effect on Buyer and its Subsidiaries, taken as a whole.

    (e) Except as set forth in Schedule 4.13 of the Buyer Disclosure Schedule or
as disclosed in Buyer SEC Reports filed prior to the date of this Agreement, and
except  as  provided  for  in  this Agreement,  neither  Buyer  nor  any  of its
Subsidiaries is  a  party  to  any  oral or  written  (i)  union  or  collective
bargaining  agreement, (ii) agreement with any  officer or other key employee of
Buyer or any of its Subsidiaries, the  benefits of which are contingent, or  the
terms  of which  are materially  altered, upon  the occurrence  of a transaction
involving Buyer of the  nature contemplated by  this Agreement, (iii)  agreement
with  any  officer of  Buyer providing  any term  of employment  or compensation
guarantee extending for a period  longer than one year  from the date hereof  or
for  the  payment of  compensation  in excess  of  $100,000 per  annum,  or (iv)
agreement or plan,  including any  stock option plan,  stock appreciation  right
plan, restricted stock plan or stock purchase plan, any of the benefits of which
will  be increased, or the vesting of the benefits of which will be accelerated,
by the occurrence of any of  the transactions contemplated by this Agreement  or
the value of any of the benefits of which will be calculated on the basis of any
of the transactions contemplated by this Agreement.

    Section  4.14   COMPLIANCE WITH LAWS.   Buyer  has complied with,  is not in
violation of, and has not received any notices of violation with respect to, any
federal, state or local statute, law  or regulation with respect to the  conduct
of  its business,  or the  ownership or  operation of  its business,  except for
failures to comply or violations which would not be reasonably likely to have  a
Material Adverse Effect on Buyer and its Subsidiaries, taken as a whole.

    Section 4.15  POOLING OF INTERESTS.  To its knowledge, neither Buyer nor any
of  its Affiliates (as  defined in Section  6.11) has, through  the date of this
Agreement, taken or  agreed to take  any action which  would prevent Buyer  from
accounting  for  the business  combination to  be  effected by  the Merger  as a
pooling of interests.

    Section 4.16    INTERESTED PARTY  TRANSACTIONS.    Except as  set  forth  in
Schedule  4.16 of  the Buyer  Disclosure Schedule or  in the  Buyer SEC Reports,
since the date of Buyer's last proxy statement to its stockholders, no event has
occurred  that  would  be  required  to  be  reported  by  Buyer  as  a  Certain
Relationship  or Related  Transaction, pursuant  to Item  404 of  Regulation S-K
promulgated by the SEC.

    Section 4.17    REGISTRATION  STATEMENT; PROXY  STATEMENT/PROSPECTUS.    The
information  supplied by Buyer for inclusion in the Registration Statement shall
not at the  time the  Registration Statement is  declared effective  by the  SEC
contain  any untrue statement of  a material fact or  omit to state any material
fact required to be stated in  the Registration Statement or necessary in  order
to  make  the  statements  in  the  Registration  Statement,  in  light  of  the
circumstances under  which  they  were made,  not  misleading.  The  information
supplied  by Buyer for inclusion  in the Proxy Statement  shall not, on the date
the Proxy Statement is first mailed to  stockholders of Chipcom, at the time  of
the  Chipcom  Stockholder's  Meeting  and at  the  Effective  Time,  contain any
statement which, at such time and in  light of the circumstances under which  it
shall be made, is false or misleading with respect to any material fact, or omit
to state any material fact necessary in order to make the statements made in the
Proxy  Statement not  false or  misleading; or omit  to state  any material fact
necessary to correct any statement in any earlier communication with respect  to
the solicitation of proxies for the Chipcom

                                      A-17
<PAGE>
Stockholders' Meeting which has become false or misleading. If at any time prior
to  the Effective  Time any event  relating to  Buyer or any  of its Affiliates,
officers or directors should be discovered by Buyer which should be set forth in
an amendment  to  the  Registration  Statement or  a  supplement  to  the  Proxy
Statement, Buyer shall promptly inform Chipcom.

    Section 4.18  OPINION OF FINANCIAL ADVISOR.  The financial advisor of Buyer,
Morgan  Stanley & Co. Incorporated, has delivered  to Buyer an opinion dated the
date of this Agreement to the effect that the financial terms of the Merger  are
fair to Buyer from a financial point of view.

    Section  4.19   INTERIM OPERATIONS OF  SUB.   Sub was formed  solely for the
purpose of  engaging in  the transactions  contemplated by  this Agreement,  has
engaged in no other business activities and has conducted its operations only as
contemplated by this Agreement.

                                   ARTICLE V
                              CONDUCT OF BUSINESS

    Section  5.1  COVENANTS OF CHIPCOM.  During the period from the date of this
Agreement and continuing until the earlier of the termination of this  Agreement
or  the Effective Time, Chipcom agrees as to itself and its Subsidiaries (except
to the extent that Buyer  shall otherwise consent in  writing), to carry on  its
business  in the  usual, regular and  ordinary course in  substantially the same
manner as previously conducted, to pay its debts and taxes when due, subject  to
good  faith  disputes over  such debts  or taxes,  to pay  or perform  its other
obligations when due, and, to the  extent consistent with such business, to  use
all  reasonable  efforts  consistent with  past  practices and  policies  to (i)
preserve intact  its  present business  organization,  (ii) keep  available  the
services  of  its present  officers  and key  employees  and (iii)  preserve its
relationships with customers, suppliers, distributors, licensors, licensees, and
others having business dealings with it. Chipcom shall promptly notify Buyer  of
any  event or occurrence not in the ordinary course of business of Chipcom where
such event or occurrence would result in a breach of any covenant of Chipcom set
forth in this Agreement or cause  any representation or warranty of Chipcom  set
forth  in this Agreement  to be untrue as  of the date of,  or giving effect to,
such event or occurrence.  Except as expressly  contemplated by this  Agreement,
subject  to Section  6.1, Chipcom  shall not  (and shall  not permit  any of its
Subsidiaries to), without the prior written consent of Buyer:

        (a) Accelerate, amend or change the period of exercisability of  options
    or  restricted stock  granted under  any employee  stock plan  of Chipcom or
    authorize cash payments  in exchange for  any options granted  under any  of
    such  plans except  as required by  the terms  of such plans  or any related
    agreements in effect as of the date of this Agreement;

        (b) Transfer or  license to any  person or entity  or otherwise  extend,
    amend or modify any rights to the Chipcom Intellectual Property Rights other
    than in the ordinary course of business consistent with past practices;

        (c)  Declare or  pay any  dividends on  or make  any other distributions
    (whether in cash, stock or property) in respect of any of its capital stock,
    or split,  combine  or reclassify  any  of its  capital  stock or  issue  or
    authorize  the issuance of any other securities in respect of, in lieu of or
    in substitution for shares  of its capital stock,  or purchase or  otherwise
    acquire, directly or indirectly, any shares of its capital stock except from
    former  employees, directors  and consultants in  accordance with agreements
    providing for the repurchase of shares in connection with any termination of
    service by such party;

        (d) Issue,  deliver  or  sell  or authorize  or  propose  the  issuance,
    delivery  or  sale  of,  any  shares  of  its  capital  stock  or securities
    convertible into  shares of  its capital  stock, or  subscriptions,  rights,
    warrants  or options to  acquire, or other agreements  or commitments of any
    character obligating  it  to issue  any  such shares  or  other  convertible
    securities,  other  than  (i)  the grant  of  options  consistent  with past
    practices to employees, which options  shall represent in the aggregate  the
    right to acquire no more than the average number of shares of Chipcom Common
    Stock subject to

                                      A-18
<PAGE>
    options granted in a comparable period of time during the preceding 12-month
    period;  or (ii) the  issuance of (A)  rights to purchase  shares of Chipcom
    Common Stock  under the  Chipcom Purchase  Plans or  (B) shares  of  Chipcom
    Common Stock issuable upon the exercise of options granted under the Chipcom
    Employee  Option Plans  or the Chipcom  Director Option Plan  or pursuant to
    rights under the Chipcom Purchase Plan;

        (e) Acquire or agree to acquire by merging or consolidating with, or  by
    purchasing  a substantial equity  interest in or  substantial portion of the
    assets of,  or  by  any  other manner,  any  business  or  any  corporation,
    partnership or other business organization or division, or otherwise acquire
    or  agree to acquire any assets  other than acquisitions involving aggregate
    consideration of not more than $500,000;

        (f) Sell, lease, license or otherwise  dispose of any of its  properties
    or  assets  which are  material, individually  or in  the aggregate,  to the
    business of  Chipcom and  its Subsidiaries,  taken as  a whole,  except  for
    transactions entered into in the ordinary course of business;

        (g)  (i) Increase  or agree to  increase the compensation  payable or to
    become payable to its officers or employees, except for increases in  salary
    or  wages of  employees in  accordance with  past practices,  (ii) grant any
    additional severance or termination pay to, or enter into any employment  or
    severance   agreements  with,   officers,  (iii)  grant   any  severance  or
    termination pay to,  or enter  into any employment  or severance  agreement,
    with any employee, except in accordance with past practices, (iv) enter into
    any  collective bargaining  agreement, (v)  establish, adopt,  enter into or
    amend  in  any   material  respect  any   bonus,  profit  sharing,   thrift,
    compensation,  stock option, restricted stock, pension, retirement, deferred
    compensation, employment, termination, severance or other plan, trust, fund,
    policy or  arrangement  for  the  benefit  of  any  directors,  officers  or
    employees;

        (h)  Revalue  any of  its assets,  including writing  down the  value of
    inventory or writing  off notes  or accounts  receivable other  than in  the
    ordinary course of business;

        (i)  Incur any  indebtedness for  borrowed money  or guarantee  any such
    indebtedness or issue or sell any  debt securities or warrants or rights  to
    acquire  any debt  securities or  guarantee any  debt securities  of others,
    other  than  indebtedness  incurred   under  outstanding  lines  of   credit
    consistent with past practice;

        (j)    Amend or  propose to  amend its  Certificate of  Incorporation or
    Bylaws, except as contemplated by this Agreement; or

        (k) Incur  or commit  to  incur any  individual capital  expenditure  in
    excess  of $100,000 or aggregate capital expenditures in excess of $500,000;
    or

        (l) Take, or agree in writing or  otherwise to take, any of the  actions
    described  in  Sections  (a)  through  (k) above,  or  any  action  which is
    reasonably likely to  make any  of Chipcom's  representations or  warranties
    contained  in this Agreement untrue or  incorrect in any material respect on
    the date made (to the extent so limited) or as of the Effective Time.

    Section 5.2  COVENANTS OF  BUYER.  During the period  from the date of  this
Agreement  and continuing until the earlier  of the termination of the Agreement
or the Effective Time, Buyer agrees as to itself and its Subsidiaries (except to
the extent that  Chipcom shall  otherwise consent in  wiring), to  carry on  its
business  in the  usual, regular and  ordinary course in  substantially the same
manner as previously conducted, to pay its  debts and taxes when due subject  to
good  faith  disputes over  such debts  or taxes,  to pay  or perform  its other
obligations when due, and, to the extent consistent with such business, use  all
reasonable  efforts  consistent with  past  practices and  policies  to preserve
intact its present  business organization,  keep available the  services of  its
present   officers  and  key  employees  and  preserve  its  relationships  with
customers,   suppliers,   distributors,   licensors,   licensees,   and   others

                                      A-19
<PAGE>
having  business  dealings with  it. Except  as  expressly contemplated  by this
Agreement, Buyer shall not  (and shall not permit  any of its Subsidiaries  to),
without  the prior  written consent of  Chipcom which shall  not be unreasonably
withheld:

        (a) Declare or  pay any  dividends on  or make  any other  distributions
    (whether in cash, stock or property) in respect of any of its capital stock,
    or reclassify any of its capital stock or issue or authorize the issuance of
    any other securities in respect of, in lieu of or in substitution for shares
    of  its capital stock (other than stock  splits of its Common Stock or stock
    dividends payable  in shares  of  Common Stock),  or purchase  or  otherwise
    acquire, directly or indirectly, any shares of its capital stock except from
    former  employees, directors  and consultants in  accordance with agreements
    providing for the repurchase or shares in connection with any termination of
    service by such party;

        (b) Acquire or agree to acquire by merging or consolidating with, or  by
    purchasing  a substantial equity  interest in or  substantial portion of the
    assets of,  or  by  any  other manner,  any  business  or  any  corporation,
    partnership  or other business organization  or division involving aggregate
    consideration in excess of $1 billion;

        (c) Sell, lease, license or otherwise  dispose of any of its  properties
    or  assets  which are  material, individually  or in  the aggregate,  to the
    business of  Buyer  and its  Subsidiaries,  taken  as a  whole,  except  for
    transactions entered into in the ordinary course of business;

        (d)  Amend or propose to amend  its Articles of Incorporation or Bylaws,
    except as contemplated by this Agreement; or

        (e) Take, or agree in writing or  otherwise to take, any of the  actions
    described  in  Sections  (a)  through  (c) above,  or  any  action  which is
    reasonably likely  to  make any  of  Buyer's representations  or  warranties
    contained  in this Agreement untrue or  incorrect in any material respect on
    the date made (to the extent so limited) or as of the Effective Time.

    Section 5.3  COOPERATION.  Subject  to compliance with applicable law,  from
the date hereof until the Effective Time, each of Buyer and Chipcom shall confer
on  a regular and frequent  basis with one or  more representatives of the other
party to report  operational matters of  materiality and the  general status  of
ongoing  operations and  shall promptly provide  the other party  or its counsel
with copies of all filings  made by such party  with any Governmental Entity  in
connection  with this  Agreement, the  Merger and  the transactions contemplated
hereby.

                                   ARTICLE VI
                             ADDITIONAL AGREEMENTS

    Section 6.1  NO SOLICITATION.

    (a)  Chipcom  shall  not,  directly  or  indirectly,  through  any  officer,
director, employee, representative or agent, (i) solicit, initiate, or encourage
any  inquiries or proposals that constitute,  or could reasonably be expected to
lead to, a proposal or offer for a merger, consolidation, business  combination,
sale  of substantial assets, sale of  shares of capital stock (including without
limitation by way of a tender offer) or similar transactions involving  Chipcom,
other than the transactions contemplated by this Agreement (any of the foregoing
inquiries  or proposals being  referred to in this  Agreement as an "Acquisition
Proposal"), (ii) engage  in negotiations or  discussions concerning, or  provide
any  non-public information to any person or entity relating to, any Acquisition
Proposal, or  (iii) agree  to, approve  or recommend  any Acquisition  Proposal;
PROVIDED,  HOWEVER,  that  nothing  contained in  this  Agreement  shall prevent
Chipcom or its Board of Directors from (A) furnishing non-public information to,
or entering  into discussions  or negotiations  with, any  person or  entity  in
connection  with an unsolicited  bona fide written  Acquisition Proposal by such
person or entity (including a new and unsolicited Acquisition Proposal  received
by  Chipcom after the execution of this  Agreement from a person or entity whose
initial contact with  Chipcom may have  been solicited by  Chipcom prior to  the

                                      A-20
<PAGE>
execution  of  this Agreement)  or recommending  such  an unsolicited  bona fide
written Acquisition Proposal to the stockholders of Chipcom, if and only to  the
extent  that (1) the Board of Directors of Chipcom believes in good faith (after
consultation with and based upon the advice of its financial advisor) that  such
Acquisition  Proposal  would,  if  consummated,  result  in  a  transaction more
favorable to Chipcom's  stockholders from  a financial  point of  view than  the
transaction  contemplated by this Agreement (any such more favorable Acquisition
Proposal being referred to in this  Agreement as a "Superior Proposal") and  the
Board  of Directors of Chipcom determines  in good faith after consultation with
and based upon the advice of outside legal counsel that such action is necessary
for Chipcom  to comply  with  its fiduciary  duties  to its  stockholders  under
applicable  law and (2)  prior to furnishing such  non-public information to, or
entering into  discussions or  negotiations with,  such person  or entity,  such
Board   of  Directors   receives  from  such   person  or   entity  an  executed
confidentiality agreement with terms no less favorable to such party than  those
contained  in the Confidentiality Agreement dated  May 2, 1995 between Buyer and
Chipcom (the  "Confidentiality Agreement");  or (B)  complying with  Rule  14e-2
promulgated under the Exchange Act with regard to an Acquisition Proposal.

    (b)  Chipcom shall  notify Buyer  no later  than 24  hours after  receipt by
Chipcom (or  its  advisors) of  any  Acquisition  Proposal or  any  request  for
nonpublic  information in connection with an  Acquisition Proposal or for access
to the properties,  books or records  of Chipcom  by any person  or entity  that
informs  Chipcom  that it  is considering  making, or  has made,  an Acquisition
Proposal. Such notice shall be made orally and in writing and shall indicate  in
reasonable  detail the identity of  the offeror and the  terms and conditions of
such proposal, inquiry or contact.

    Section 6.2  PROXY STATEMENT/PROSPECTUS; REGISTRATION STATEMENT.

    (a) As promptly as practicable after the execution of this Agreement,  Buyer
and  Chipcom shall prepare and file with  the SEC the Proxy Statement, and Buyer
shall prepare and  file with the  SEC the Registration  Statement, in which  the
Proxy  Statement will  be included. Buyer  and Chipcom shall  use all reasonable
efforts to cause the  Registration Statement to become  effective as soon  after
such filing as practicable. The Proxy Statement shall include the recommendation
of  the Board of Directors of Chipcom in favor of this Agreement and the Merger;
provided that the Board of Directors of Chipcom may withdraw such recommendation
if such Board of Directors believes  in good faith, after consultation with  its
outside  counsel, that  the withdrawal  of such  recommendation is  necessary to
comply with its fiduciary duties under applicable law.

    (b) Buyer and Chipcom shall make  all necessary filings with respect to  the
Merger  under the Securities Act and the  Exchange Act and applicable state blue
sky laws and the rules and regulations thereunder.

    Section 6.3  CONSENTS.  Each of  Buyer and Chipcom shall use all  reasonable
efforts  to obtain  all necessary consents,  waivers and approvals  under any of
Buyer's or Chipcom's material agreements,  contracts, licenses or leases as  may
be  necessary or advisable  to consummate the Merger  and the other transactions
contemplated by this Agreement.

    Section 6.4  CURRENT NASDAQ QUOTATION.  Each of Buyer and Chipcom agrees  to
continue  the  quotation  of  Buyer  Common  Stock  and  Chipcom  Common  Stock,
respectively, on the Nasdaq National Market during the term of the Agreement  so
that,  to  the  extent necessary,  appraisal  rights  will not  be  available to
stockholders of Chipcom under Section 262 of the DGCL.

    Section 6.5   ACCESS TO INFORMATION.   Upon reasonable  notice, Chipcom  and
Buyer  shall each (and  shall cause each  of its Subsidiaries  to) afford to the
officers, employees,  accountants,  counsel  and other  representatives  of  the
other,  access,  during normal  business hours  during the  period prior  to the
Effective Time, to all its properties, books, contracts, commitments and records
and, during such period, each of Chipcom  and Buyer shall (and shall cause  each
of its Subsidiaries to) furnish promptly to the other (a) a copy of each report,
schedule,  registration statement  and other  document filed  or received  by it
during such period pursuant to the  requirements of federal securities laws  and
(b) all

                                      A-21
<PAGE>
other  information  concerning its  business, properties  and personnel  as such
other party  may  reasonably request.  Unless  otherwise required  by  law,  the
parties  will  hold any  such information  which is  nonpublic in  confidence in
accordance with  the  Confidentiality  Agreement. No  information  or  knowledge
obtained  in any investigation pursuant  to this Section 6.5  shall affect or be
deemed to modify any representation or  warranty contained in this Agreement  or
the conditions to the obligations of the parties to consummate the Merger.

    Section  6.6  CHIPCOM STOCKHOLDERS MEETING.  Chipcom shall call a meeting of
its stockholders to be held as promptly as practicable for the purpose of voting
upon this Agreement  and the Merger.  Subject to Sections  6.1 and 6.2,  Chipcom
will,  through  its  Board  of Directors,  recommend  to  Chipcom's stockholders
approval of  such matters  and will  coordinate and  cooperate with  Buyer  with
respect  to the timing  of such meeting and  shall use its  best efforts to hold
such meeting as  soon as  practicable after  the date  hereof. Unless  otherwise
required  to comply  with the  applicable fiduciary  duties of  the directors of
Chipcom, as determined by such directors  in good faith after consultation  with
and  based  upon the  advice of  outside  legal counsel,  Chipcom shall  use all
reasonable efforts to  solicit from its  stockholders proxies in  favor of  such
matters.

    Section  6.7  LEGAL  CONDITIONS TO MERGER.   Each of  Buyer and Chipcom will
take all  reasonable  actions  necessary  to  comply  promptly  with  all  legal
requirements  which may be imposed  on itself with respect  to the Merger (which
actions shall include, without  limitation, furnishing all information  required
under  the HSR Act and in connection with approvals of or filings with any other
Governmental Entity) and will promptly cooperate with and furnish information to
each other in connection with any such requirements imposed upon any of them  or
any  of their  Subsidiaries in  connection with  the Merger.  Each of  Buyer and
Chipcom will, and will  cause its Subsidiaries to,  take all reasonable  actions
necessary  to  obtain (and  will  cooperate with  each  other in  obtaining) any
consent,  authorization,  order  or  approval  of,  or  any  exemption  by,  any
Governmental Entity or other public third party, required to be obtained or made
by  Chipcom, Buyer or any of their Subsidiaries in connection with the Merger or
the taking of any action contemplated thereby or by this Agreement.

    Section 6.8  PUBLIC DISCLOSURE.   Buyer and Chipcom shall consult with  each
other  before issuing any press release or otherwise making any public statement
with respect to the Merger or this Agreement and shall not issue any such  press
release  or make any such public statement prior to such consultation, except as
may be required by law or by the rules of the NASD.

    Section 6.9  TAX-FREE  ORGANIZATION.  Buyer and  Chipcom shall each use  its
best  efforts to cause the  Merger to be treated  as a reorganization within the
meaning of Section 368(a) of the Code.

    Section 6.10  POOLING ACCOUNTING.  Buyer and Chipcom shall each use its best
efforts to cause the  business combination to  be effected by  the Merger to  be
accounted for as a pooling of interests. Each of Buyer and Chipcom shall use its
best efforts (i) to cause its respective Affiliates (as defined in Section 6.11)
not  to take  any action  that would  adversely affect  the ability  of Buyer to
account for the business combination to be  effected by the Merger as a  pooling
of  interests and (ii) to cause its respective Affiliates to sign and deliver to
Buyer a customary "pooling letter" in form and substance agreed upon by  Chipcom
and  Buyer to the extent  that receipt of such letter  is required to assure the
availability of pooling of interests accounting treatment.

    Section 6.11  AFFILIATE AGREEMENTS.   Upon the execution of this  Agreement,
Buyer  and Chipcom will provide each other with a list of those persons who are,
in Buyer's or Chipcom's respective reasonable judgment, "affiliates" of Buyer or
Chipcom, respectively, within the meaning of  Rule 145 (each such person who  is
an "affiliate" of Buyer or Chipcom within the meaning of Rule 145 is referred to
herein  as an  "Affiliate") promulgated under  the Securities  Act ("Rule 145").
Buyer and Chipcom  shall provide each  other such information  and documents  as
Chipcom  or Buyer shall  reasonably request for purposes  of reviewing such list
and shall notify the other party in writing regarding any change in the identity
of its Affiliates prior to the Closing Date. Chipcom shall use its best  efforts
to deliver or cause to be delivered to Buyer by August 31, 1995 from each of the
Affiliates  of Chipcom, an  executed Affiliate Agreement,  in form and substance
satisfactory to Buyer and Chipcom, by which

                                      A-22
<PAGE>
such Affiliate of Chipcom agrees to  comply with the applicable requirements  of
Rule 145 ("Affiliates Agreement"); provided, however, that it is understood that
Affiliates  Agreements are not likely to be obtainable from shareholders who are
institutional investors not affiliated with any officer or director of  Chipcom.
Buyer  shall  be  entitled  to place  appropriate  legends  on  the certificates
evidencing any Buyer Common Stock to  be received by such Affiliates of  Chipcom
pursuant  to the terms of this Agreement, and to issue appropriate stop transfer
instructions to the transfer agent for  the Buyer Common Stock, consistent  with
the terms of the Affiliates Agreements.

    Section  6.12  NASDAQ QUOTATION.  Buyer  shall use its best efforts to cause
the shares of Buyer Common Stock to be  issued in the Merger to be approved  for
quotation on the Nasdaq National Market, subject to official notice of issuance,
prior to the Closing Date.

    Section 6.13  STOCK PLANS, OPTIONS AND WARRANTS.

    (a)  At the  Effective Time, each  outstanding option to  purchase shares of
Chipcom Common  Stock (an  "Chipcom Stock  Option") under  the Chipcom  Employee
Option  Plans,  whether vested  or unvested,  shall be  deemed to  constitute an
option to acquire,  on the same  terms and conditions  as were applicable  under
such  Chipcom Stock Option, the  same number of shares  of Buyer Common Stock as
the holder of  such Chipcom  Stock Option would  have been  entitled to  receive
pursuant to the Merger had such holder exercised such option in full immediately
prior  to the Effective  Time (rounded down  to the nearest  whole number), at a
price per  share  (rounded up  to  the nearest  whole  cent) equal  to  (i)  the
aggregate  exercise  price  for the  shares  of Chipcom  Common  Stock otherwise
purchasable pursuant to such Chipcom Stock Option divided by (ii) the number  of
full  shares of  Buyer Common  Stock deemed  purchasable pursuant  to such Buyer
Stock Option in accordance with the  foregoing; PROVIDED, HOWEVER, that, in  the
case  of  any Chipcom  Stock Option  to which  Section 422  of the  Code applies
("incentive stock options"), the option price, the number of shares  purchasable
pursuant  to such option and the terms and conditions of exercise of such option
shall be determined in order to comply with Section 425(a) of the Code.

    (b) As soon as practicable after the Effective Time, Buyer shall deliver  to
the  participants in the  Chipcom Option Plans  appropriate notice setting forth
such participants'  rights  pursuant thereto  and  the grants  pursuant  to  the
Chipcom  Option Plans shall continue in effect  on the same terms and conditions
(subject to the adjustments required by this Section 6.13 after giving effect to
the Merger). Buyer shall comply with the  terms of the Chipcom Option Plans  and
ensure,  to  the extent  required by,  and  subject to  the provisions  of, such
Chipcom Option Plans, that  Chipcom Stock Options  which qualified as  incentive
stock  options prior the  Effective Time continue to  qualify as incentive stock
options after the Effective Time.

    (c) Buyer shall take all corporate action necessary to reserve for  issuance
a  sufficient number of shares of Buyer  Common Stock for delivery under Chipcom
Stock Options  assumed  in  accordance  with  this  Section  6.13.  As  soon  as
practicable  after  the  Effective Time,  and  not  more than  10  business days
thereafter, Buyer shall file a registration statement on Form S-3 or Form S-8 as
the case  may be  (or any  successor  or other  appropriate forms),  or  another
appropriate  form with respect  to the shares  of Buyer Common  Stock subject to
such options and  shall use its  best efforts to  maintain the effectiveness  of
such registration statement or registration statements (and maintain the current
status  of the prospectus or prospectuses contained therein) for so long as such
options remain outstanding. With respect to those individuals who subsequent  to
the  Merger will be subject to the reporting requirements under Section 16(a) of
the Exchange Act, where applicable, Buyer shall administer Chipcom Stock Options
assumed pursuant to this Section 6.13 in a manner that complies with Rule  16b-3
promulgated  under  the Exchange  Act  to the  extent  the Chipcom  Option Plans
complied with such rule prior to the Merger.

    (d) Employees of  Chipcom as  of the Effective  Time shall  be permitted  to
participate  in the Buyer Purchase Plan  commencing on the first enrollment date
of such plan following the Effective Time, subject to the eligibility provisions
of such plan (with employees receiving credit, for purposes of such  eligibility
provisions, for service with Chipcom or Buyer).

                                      A-23
<PAGE>
    Section  6.14  BROKERS OR FINDERS.  Each of Buyer and Chipcom represents, as
to  itself,  its  Subsidiaries  and  its  Affiliates,  that  no  agent,  broker,
investment  banker, financial  advisor or  other firm  or person  is or  will be
entitled to any broker's or finder's fee or any other commission or similar  fee
in connection with any of the transactions contemplated by this Agreement except
Wessels,  Arnold & Henderson, whose fees and expenses will be paid by Chipcom in
accordance with Chipcom's agreement  with such firm (copies  of which have  been
delivered  by Chipcom to Buyer prior to  the date of this Agreement), and Morgan
Stanley & Co. Incorporated,  whose fees and  expenses will be  paid by Buyer  in
accordance  with Buyer's  agreement with  such firm  (copies of  which have been
delivered by Buyer prior to the date  of this Agreement), and each of Buyer  and
Chipcom agrees to indemnify and hold the other harmless from and against any and
all  claims,  liabilities  or  obligations  with  respect  to  any  other  fees,
commissions or  expenses asserted  by any  person on  the basis  of any  act  or
statement alleged to have been made by such party or its Affiliate.

    Section 6.15  INDEMNIFICATION.

    (a)  Chipcom shall  and, from  and after the  Effective Time,  Buyer and the
Surviving Corporation shall, indemnify, defend and hold harmless each person who
is now, or  has been at  any time  prior to the  date of this  Agreement or  who
becomes prior to the Effective Time, an officer, director or employee of Chipcom
or  any  of its  Subsidiaries (the  "Indemnified  Parties") against  all losses,
claims, damages, costs, expenses, liabilities  or judgments or amounts that  are
paid  in settlement with the approval  of the indemnifying party (which approval
shall not be unreasonably withheld) of or in connection with any claim,  action,
suit,  proceeding or investigation  based in whole  or in part  on or arising in
whole or in part out of the fact that such person is or was a director, officer,
or employee of  Chipcom or any  of its Subsidiaries,  whether pertaining to  any
matter  existing or  occurring at  or prior  to the  Effective Time  and whether
asserted or claimed prior to, or  at or after, the Effective Time  ("Indemnified
Liabilities") including, without limitation, all losses, claims, damages, costs,
expenses,  liabilities or judgments based in whole  or in part on, or arising in
whole or in part  out of, or  pertaining to this  Agreement or the  transactions
contemplated  hereby, in each case to the full extent a corporation is permitted
under the DGCL to  indemnify its own directors,  officers and employees, as  the
case  may be (Chipcom, Buyer and the  Surviving Corporation, as the case may be,
will pay expenses  in advance of  the final  disposition of any  such action  or
proceeding  to each Indemnified Party  to the full extent  permitted by law upon
receipt of any undertaking contemplated by Section 145(e) of the DGCL).  Without
limiting the foregoing, in the event any such claim, action, suit, proceeding or
investigation  is brought against any  Indemnified Party (whether arising before
or after the  Effective Time), (i)  the Indemnified Parties  may retain  counsel
satisfactory  to  them  and  Chipcom  (or  them  and  Buyer  and  the  Surviving
Corporation after  the Effective  Time), (ii)  Chipcom (or  after the  Effective
Time,  Buyer and  the Surviving Corporation)  shall pay all  reasonable fees and
expenses of  such counsel  for the  Indemnified Parties  promptly as  statements
therefor are received, and (iii) Chipcom (or after the Effective Time, Buyer and
the  Surviving Corporation)  will use  all reasonable  efforts to  assist in the
vigorous defense of any such matter, provided that none of Chipcom, Buyer or the
Surviving Corporation shall be liable for  any settlement of any claim  effected
without  its written consent, which consent,  however, shall not be unreasonably
withheld. Any  Indemnified Party  wishing to  claim indemnification  under  this
Section  6.15,  upon learning  of any  such claim,  action, suit,  proceeding or
investigation, shall promptly notify Chipcom, Buyer or the Surviving Corporation
(but the failure so to  notify an Indemnifying Party  shall not relieve it  from
any  liability which it  may have under  this Section 6.15  except to the extent
such failure prejudices such party), and shall deliver to Chipcom (or after  the
Effective   Time,  Buyer   and  the   Surviving  Corporation)   the  undertaking
contemplated by Section 145(e) of the  DGCL. The Indemnified Parties as a  group
may  retain only one law firm to represent them with respect to each such matter
unless there is, under applicable standards of professional conduct, a  conflict
on  any significant issue between  the positions of any  two or more Indemnified
Parties.

    (b) From and after the Effective  Time, the Surviving Corporation and  Buyer
will  fulfill and honor in  all respects the obligations  of Chipcom pursuant to
Chipcom's Certificate of Incorporation

                                      A-24
<PAGE>
and any indemnification agreement between Chipcom and any of Chipcom's directors
and officers existing and in force as of the date of this Agreement and filed as
an exhibit to the Chipcom SEC Reports.

    (c) Buyer  shall  maintain, or  shall  cause the  Surviving  Corporation  to
maintain,  in effect  a policy or  policies of directors  and officers liability
insurance with coverage  substantially comparable to  policies in force  through
June  29,  1995 (copies  of  which have  been  provided to  Buyer)  covering the
directors and officers of Chipcom as of the date of this Agreement for a  period
of  not less than six (6) years following the Effective Time; provided, however,
that should such  comparable coverage at  any time be  unavailable at an  annual
premium of less than $400,000, Buyer and/or the Surviving Corporation shall only
be required to obtain such lesser coverage as may be obtained for such amount.

    (d)  The provisions of this Section 6.15  are intended to be for the benefit
of, and shall be enforceable  by, each Indemnified Party,  his or her heirs  and
representatives, and may not be amended, altered or repealed without the written
consent of any affected Indemnified Party.

    Section  6.16   ADDITIONAL AGREEMENTS; REASONABLE  EFFORTS.   Subject to the
terms and conditions of this  Agreement, each of the  parties agrees to use  all
reasonable efforts to take, or cause to be taken, all action and to do, or cause
to  be done, all things necessary, proper or advisable under applicable laws and
regulations to consummate  and make effective  the transactions contemplated  by
this  Agreement,  subject to  the appropriate  vote  of stockholders  of Chipcom
described in  Section 6.6,  including cooperating  fully with  the other  party,
including by provision of information and making all necessary filings under the
HSR  Act. In  case at any  time after the  Effective Time any  further action is
necessary or desirable to carry  out the purposes of  this Agreement or to  vest
the  Surviving Corporation  with full title  to all  properties, assets, rights,
approvals, immunities and franchises of either of the Constituent  Corporations,
the proper officers and directors of each party to this Agreement shall take all
such necessary action.

                                  ARTICLE VII
                              CONDITIONS TO MERGER

    Section   7.1    CONDITIONS  TO  EACH   PARTY'S  OBLIGATION  TO  EFFECT  THE
MERGER.  The respective  obligations of each party  to this Agreement to  effect
the Merger shall be subject to the satisfaction prior to the Closing Date of the
following conditions:

        (a)   CHIPCOM STOCKHOLDER APPROVAL.  This Agreement and the Merger shall
    have been approved and adopted by the  affirmative vote of the holders of  a
    majority of the outstanding shares of Chipcom Common Stock.

        (b)   HSR ACT.  The waiting period applicable to the consummation of the
    Merger under the HSR Act shall have expired or been terminated.

        (c)  APPROVALS.  Other than the filing provided for by Section 1.2,  all
    authorizations, consents, orders or approvals of, or declarations or filings
    with,  or expirations of waiting periods imposed by, any Governmental Entity
    the failure of which to obtain would be reasonably likely to have a Material
    Adverse  Effect  on  Buyer   and  its  Subsidiaries   or  Chipcom  and   its
    Subsidiaries, in each case taken as a whole, shall have been filed, occurred
    or been obtained.

        (d)    REGISTRATION STATEMENT.   The  Registration Statement  shall have
    become effective under the  Securities Act and shall  not be the subject  of
    any stop order or proceedings seeking a stop order.

        (e)  NO INJUNCTIONS OR RESTRAINTS; ILLEGALITY.  No temporary restraining
    order,  preliminary or  permanent injunction  or other  order issued  by any
    court of competent jurisdiction  or other legal  or regulatory restraint  or
    prohibition  preventing  the  consummation  of  the  Merger  or  limiting or
    restricting Buyer's conduct or operation of the business of Buyer after  the
    Merger  shall  have  been issued,  nor  shall  any proceeding  brought  by a
    domestic administrative agency or

                                      A-25
<PAGE>
    commission or  other  domestic  Governmental  Entity,  seeking  any  of  the
    foregoing  be pending; nor shall there be  any action taken, or any statute,
    rule, regulation or order enacted, entered, enforced or deemed applicable to
    the Merger which makes the consummation of the Merger illegal.

        (f)  POOLING  LETTERS.  Buyer  and Chipcom shall  have received  letters
    from  Deloitte &  Touche LLP  and Price  Waterhouse LLP,  respectively, each
    dated the  date of  the Proxy  Statement  and confirmed  in writing  at  the
    Effective  Time and  addressed to  Buyer and  Chipcom, respectively, stating
    that they know of nothing that would prohibit the business combination to be
    effected by the Merger from qualifying as a pooling of interests transaction
    under generally accepted accounting principles.

        (g)  NASDAQ.   The  shares of  Buyer Common Stock  to be  issued in  the
    Merger shall have been approved for quotation on the Nasdaq National Market.

    Section  7.2  ADDITIONAL  CONDITIONS TO OBLIGATIONS  OF BUYER AND  SUB.  The
obligations  of  Buyer  and  Sub  to  effect  the  Merger  are  subject  to  the
satisfaction  of each of the following conditions, any of which may be waived in
writing exclusively by Buyer and Sub:

        (a)  REPRESENTATIONS AND WARRANTIES.  The representations and warranties
    of Chipcom set  forth in this  Agreement shall  be true and  correct in  all
    material respects as of the date of this Agreement and (except to the extent
    such  representations and warranties speak as of  an earlier date) as of the
    Closing Date as though made  on and as of the  Closing Date, except for  (i)
    changes contemplated by this Agreement and (ii) where the failure to be true
    and correct would not be reasonably likely to have a Material Adverse Effect
    on  Chipcom and  its Subsidiaries  taken as a  whole, or  a material adverse
    effect upon the  consummation of the  transactions contemplated hereby;  and
    Buyer  shall have received a certificate signed  on behalf of Chipcom by the
    chief executive officer and the chief  financial officer of Chipcom to  such
    effect.  For purposes of determining the accuracy of the representations and
    warranties set forth in  Section 3.6 as of  the Closing Date, the  following
    events  or occurrences shall not be  deemed to constitute a Material Adverse
    Change to the extent that they  result in substantial part as a  consequence
    of  the public announcement of  this Agreement or the  terms of the proposed
    Merger:

           (i) a  reduction in  Chipcom's revenues  from International  Business
       Machines Corporation;

           (ii) a reduction in Chipcom's revenues from switching products and/or
       stackable  hub products as  a result of  Chipcom's endorsement of Buyer's
       products;

          (iii) reduction or cancellation of orders by other major customers  of
       Chipcom, particularly customers who are competitors of Buyer;

          (iv) reduction or cancellation of orders in Chipcom's reseller channel
       while the effects of the proposed Merger are assessed;

           (v)  a  slowdown in  the activities  of Chipcom's  field organization
       while the effects of the proposed Merger are assessed;

          (vi) termination  of agreements  between  Chipcom and  third  parties,
       including resellers; or

          (vii)  loss  of  key employees  and  the impact  thereof  on Chipcom's
       operations.

        In addition, material adverse developments in securities  litigation
    currently   pending  against  Chipcom  and   disclosed  in  the  Chipcom
    Disclosure Schedule shall not be deemed to be a Material Adverse  Change
    for such purpose.

                                      A-26
<PAGE>
        (b)    PERFORMANCE  OF  OBLIGATIONS  OF  CHIPCOM.    Chipcom  shall have
    performed in all material respects all obligations required to be  performed
    by  it under this Agreement at or prior to the Closing Date; and Buyer shall
    have received  a  certificate signed  on  behalf  of Chipcom  by  the  chief
    executive officer and the chief financial officer of Chipcom to such effect.

        (c)  TAX OPINION.  Buyer shall have received a written opinion from Gray
    Cary  Ware & Freidenrich,  A Professional Corporation,  counsel to Buyer, to
    the effect that the Merger will  be treated for Federal income tax  purposes
    as  a tax-free  reorganization within the  meaning of Section  368(a) of the
    Code.

        (d)  BLUE SKY  LAWS.  Buyer  shall have received  all permits and  other
    authorizations  required  under  applicable  state  blue  sky  laws  for the
    issuance of shares of Buyer Common Stock pursuant to the Merger.

    Section  7.3    ADDITIONAL  CONDITIONS  TO  OBLIGATIONS  OF  CHIPCOM.    The
obligation  of Chipcom to  effect the Merger  is subject to  the satisfaction of
each of  the following  conditions, any  of  which may  be waived,  in  writing,
exclusively by Chipcom:

        (a)  REPRESENTATIONS AND WARRANTIES.  The representations and warranties
    of  Buyer and Sub set  forth in this Agreement shall  be true and correct in
    all material respects as of  the date of this  Agreement and (except to  the
    extent  such representations speak as of an  earlier date) as of the Closing
    Date as though made on  and as of the Closing  Date, except for (i)  changes
    contemplated  by this Agreement  and (ii) where  the failure to  be true and
    correct would not be reasonably likely to have a Material Adverse Effect  on
    Buyer  and its Subsidiaries, taken as a  whole, or a material adverse effect
    upon the consummation of the  transactions contemplated hereby; and  Chipcom
    shall  have received a  certificate signed on  behalf of Buyer  by the chief
    executive officer and the chief financial officer of Buyer to such effect.

        (b)  PERFORMANCE OF OBLIGATIONS OF BUYER  AND SUB.  Buyer and Sub  shall
    have  performed  in all  material respects  all  obligations required  to be
    performed by them under this Agreement at or prior to the Closing Date;  and
    Chipcom  shall have received a certificate signed  on behalf of Buyer by the
    chief executive officer  and the chief  financial officer of  Buyer to  such
    effect.

        (c)   TAX OPINION.  Chipcom shall  have received the opinion of Hale and
    Dorr, counsel to Chipcom, to the effect that the Merger will be treated  for
    Federal  income tax purposes as a tax-free reorganization within the meaning
    of Section 368(a) of the Code.

                                  ARTICLE VIII
                           TERMINATION AND AMENDMENT

    Section 8.1   TERMINATION.   This Agreement may  be terminated  at any  time
prior  to the Effective Time (with respect to Sections 8.1(b) through 8.1(f), by
written notice by the terminating party  to the other party), whether before  or
after  approval of the  matters presented in  connection with the  Merger by the
stockholders of Chipcom:

        (a) by mutual written consent of Buyer and Chipcom; or

        (b) by  either  Buyer or  Chipcom  if the  Merger  shall not  have  been
    consummated  by December 31, 1995 (provided that the right to terminate this
    Agreement under this  Section 8.1(b)  shall not  be available  to any  party
    whose  failure to fulfill  any obligation under this  Agreement has been the
    cause of or resulted in the failure of the Merger to occur on or before such
    date); or

        (c) by either Buyer or Chipcom  if a court of competent jurisdiction  or
    other  Governmental Entity  shall have  issued a  nonappealable final order,
    decree or ruling or taken any other  action, in each case having the  effect
    of  permanently restraining, enjoining or  otherwise prohibiting the Merger,
    except, if the party relying on such order, decree or ruling or other action
    has not complied with its obligations  under Section 6.7 of this  Agreement;
    or

                                      A-27
<PAGE>
        (d)  by Buyer, if,  at the Chipcom  Stockholders' Meeting (including any
    adjournment or  postponement), the  requisite vote  of the  stockholders  of
    Chipcom  in  favor of  this Agreement  and  the Merger  shall not  have been
    obtained; or

        (e) by  Buyer, if  (i) the  Board  of Directors  of Chipcom  shall  have
    withdrawn  or modified its recommendation of this Agreement or the Merger in
    a manner adverse to Buyer or  shall have publicly announced or disclosed  to
    any  third  party  its  intention  to  do  any  of  the  foregoing;  (ii) an
    Alternative Transaction (as defined in Section 8.3(e) shall have taken place
    or the  Board  of  Directors  of  Chipcom  shall  have  recommended  to  the
    stockholders  of Chipcom an Alternative Transaction; or (iii) a tender offer
    or exchange  offer for  20% or  more of  the outstanding  shares of  Chipcom
    Common Stock is commenced (other than by Buyer or an Affiliate of Buyer) and
    the  Board  of  Directors of  Chipcom  recommends that  the  stockholders of
    Chipcom tender their shares in such tender or exchange offer; or

        (f)  by  Buyer  or  Chipcom,  if   there  has  been  a  breach  of   any
    representation,  warranty, covenant  or agreement on  the part  of the other
    party set forth in  this Agreement, which breach  (i) causes the  conditions
    set  forth in Section 7.2(a) or (b) (in the case of termination by Buyer) or
    7.3(a) or (b) (in the  case of termination by  Chipcom) not to be  satisfied
    and (ii) shall not have been cured within 10 business days following receipt
    by  the breaching  party of  written notice  of such  breach from  the other
    party.

    Section 8.2  EFFECT  OF TERMINATION.   In the event  of termination of  this
Agreement  as provided in Section 8.1, there shall be no liability or obligation
on the part  of Buyer,  Chipcom, Sub  or their  respective officers,  directors,
stockholders  or  Affiliates, except  as set  forth in  Section 8.3  and further
except to the extent that such termination results from the willful breach by  a
party  of any of its representations, warranties  or covenants set forth in this
Agreement; provided  that, the  provisions  of Sections  6.14  and 8.3  of  this
Agreement  and  the Confidentiality  Agreement shall  remain  in full  force and
effect and survive any termination of this Agreement.

    Section 8.3  FEES AND EXPENSES.

    (a) Except as set forth in this Section 8.3, all fees and expenses  incurred
in connection with this Agreement and the transactions contemplated hereby shall
be  paid by  the party  incurring such  expenses, whether  or not  the Merger is
consummated; provided, however, that Buyer  and Chipcom shall share equally  all
fees  and  expenses, other  than attorneys'  fees, incurred  in relation  to the
printing and filing of  the Proxy Statement  (including any related  preliminary
materials)  and the  Registration Statement (including  financial statements and
exhibits) and any amendments or supplements.

    (b) Chipcom shall pay Buyer up  to $1,000,000 as reimbursement for  expenses
of  Buyer actually  incurred relating to  the transactions  contemplated by this
Agreement prior to termination (including, but not limited to, fees and expenses
of Buyer's  counsel,  accountants  and financial  advisors,  but  excluding  any
discretionary  fees paid to such financial  advisors) upon the earliest to occur
of the following events:

        (i) the  termination of  this  Agreement by  Buyer pursuant  to  Section
    8.1(d) as a result of the failure to receive the requisite vote for approval
    of  this Agreement  and the  Merger by  the stockholders  of Chipcom  at the
    Chipcom Stockholders' Meeting; or

        (ii) the  termination of  this Agreement  by Buyer  pursuant to  Section
    8.1(e).

    (c)  Chipcom  shall pay  Buyer  a termination  fee  of $23,000,000  upon the
earliest to occur of the following events:

        (i) the  termination of  this  Agreement by  Buyer pursuant  to  Section
    8.1(e); or

        (ii)  the termination  of this  Agreement by  Buyer pursuant  to Section
    8.1(d) as a result of the failure to receive the requisite vote for approval
    of this Agreement and the Merger by the

                                      A-28
<PAGE>
    stockholders of Chipcom at the Chipcom Stockholders' Meeting if, at the time
    of such failure, there shall have been announced an Alternative  Transaction
    (as   hereinafter  defined)  which  shall   not  have  been  absolutely  and
    unconditionally withdrawn and abandoned.

    (d) The expenses and fees, if applicable, payable pursuant to Section 8.3(b)
or 8.3(c) shall be paid within one business day after the first to occur of  the
events  described in Section 8.3(b)(i) or (ii); provided that, in no event shall
Buyer or  Chipcom, as  the case  may  be, be  required to  pay any  expenses  or
termination  fees, if  applicable, to  the other,  if, immediately  prior to the
termination of this Agreement,  the party to receive  the expenses and fees,  if
applicable,  was  in  breach  of  any of  its  material  obligations  under this
Agreement.

    (e) As used in this Agreement, "Alternative Transaction" means either (i)  a
transaction  pursuant to which any person (or group of persons) other than Buyer
or its Affiliates (a "Third Party"),  acquires more than 20% of the  outstanding
shares  of Chipcom Common Stock, pursuant to a tender offer or exchange offer or
otherwise, (ii)  a  merger  or  other  business  combination  involving  Chipcom
pursuant  to which  any Third  Party acquires more  than 20%  of the outstanding
equity securities of  Chipcom or the  entity surviving such  merger or  business
combination,  (iii)  any other  transaction pursuant  to  which any  Third Party
acquires control of assets  (including for this  purpose the outstanding  equity
securities  of Subsidiaries of  Chipcom, and the entity  surviving any merger or
business combination including  any of  them) of  Chipcom having  a fair  market
value  (as determined by the Board of  Directors of Chipcom in good faith) equal
to more  than  20% of  the  fair  market value  of  all the  assets  of  Chipcom
immediately  prior to  such transaction,  or (iv)  any public  announcement of a
proposal, plan or  intention to  do any  of the  foregoing or  any agreement  to
engage in any of the foregoing.

    Section  8.4   AMENDMENT.   This  Agreement  may be  amended by  the parties
hereto, by action taken or authorized  by their respective Boards of  Directors,
at any time before or after approval of the matters presented in connection with
the  Merger by  the stockholders  of Chipcom, but,  after any  such approval, no
amendment shall  be  made  which  by  law  requires  further  approval  by  such
stockholders  without such further  approval. This Agreement  may not be amended
except by an  instrument in  writing signed  on behalf  of each  of the  parties
hereto.

    Section  8.5  EXTENSION; WAIVER.   At any time  prior to the Effective Time,
the parties hereto, by action taken or authorized by their respective Boards  of
Directors,  may, to  the extent  legally allowed,  (i) extend  the time  for the
performance of any of the obligations or other acts of the other parties hereto,
(ii) waive  any inaccuracies  in the  representations and  warranties  contained
herein  or in any document delivered  pursuant hereto and (iii) waive compliance
with any of the agreements or conditions contained herein. Any agreement on  the
part  of a party hereto to  any such extension or waiver  shall be valid only if
set forth in a written instrument signed on behalf of such party.

                                   ARTICLE IX
                                 MISCELLANEOUS

    Section   9.1       NONSURVIVAL   OF    REPRESENTATIONS,   WARRANTIES    AND
AGREEMENTS.   None  of the  representations, warranties  and agreements  in this
Agreement or  in  any instrument  delivered  pursuant to  this  Agreement  shall
survive  the Closing and the Effective Time, except for the agreements contained
in Sections 1.3, 1.4, 2.1, 2.2, 6.13,  6.15, 6.16, the last sentence of  Section
8.4  and Article IX, and  the agreements of the  Affiliates of Chipcom delivered
pursuant to  Section  6.11.  The Confidentiality  Agreement  shall  survive  the
execution and delivery of this Agreement.

                                      A-29
<PAGE>
    Section  9.2  NOTICES.  All notices and other communications hereunder shall
be in writing  and shall  be deemed  given if  delivered personally,  telecopied
(which  is confirmed) or mailed by  registered or certified mail (return receipt
requested) to the parties at the  following addresses (or at such other  address
for a party as shall be specified by like notice):

    (a) if to Buyer or Sub, to

        3Com Corporation
       5400 Bayfront Plaza
       Santa Clara, California 95052
       Attention: General Counsel

        with a copy to:

        Gray Cary Ware & Freidenrich
       400 Hamilton Avenue
       Palo Alto, California 94301
       Attention: Dennis C. Sullivan, Esq.

    (b) if to Chipcom, to

        Chipcom Corporation
       118 Turnpike Road
       Southborough, Massachusetts 01772-1886
       Attention: President

        with a copy to

        Hale and Dorr
       60 State Street
       Boston, Massachusetts 02109
       Attention: Peter B. Tarr, Esq.

    Section  9.3  INTERPRETATION.  When a reference is made in this Agreement to
a section,  such  reference shall  be  to a  Section  of this  Agreement  unless
otherwise  indicated.  The  table of  contents  and headings  contained  in this
Agreement are for reference purposes  only and shall not  affect in any way  the
meaning  or  interpretation of  this  Agreement. Whenever  the  words "include,"
"includes" or "including" are used in this Agreement they shall be deemed to  be
followed  by the words "without limitation." The phrase "made available" in this
Agreement shall mean that the information referred to has been made available if
requested by the party  to whom such  information is to  be made available.  The
phrases  "the date of this  Agreement", "the date hereof,"  and terms of similar
import, unless the context otherwise requires, shall be deemed to refer to  July
26, 1995.

    Section  9.4  COUNTERPARTS.   This Agreement may be  executed in two or more
counterparts, all of which  shall be considered one  and the same agreement  and
shall become effective when two or more counterparts have been signed by each of
the  parties and delivered  to the other  parties, it being  understood that all
parties need not sign the same counterpart.

    Section 9.5  ENTIRE AGREEMENT; NO THIRD PARTY BENEFICIARIES.  This Agreement
(including the documents and the instruments referred to herein) (a) constitutes
the entire agreement  and supersedes  all prior  agreements and  understandings,
both  written and  oral, among  the parties with  respect to  the subject matter
hereof, and (b) except  as provided in  Section 6.15 is  not intended to  confer
upon any person other than the parties hereto any rights or remedies hereunder.

    Section  9.6  GOVERNING LAW.  This Agreement shall be governed and construed
in accordance with  the laws  of the  State of  Delaware without  regard to  any
applicable conflicts of law.

    Section  9.7   ASSIGNMENT.   Neither this Agreement  nor any  of the rights,
interests or  obligations hereunder  shall be  assigned by  any of  the  parties
hereto (whether by operation of law or otherwise)

                                      A-30
<PAGE>
without the prior written consent of the other parties. Subject to the preceding
sentence,  this Agreement will be  binding upon, inure to  the benefit of and be
enforceable by the parties and their respective successors and assigns.

    IN WITNESS WHEREOF, Buyer, Sub and Chipcom have caused this Agreement to  be
signed  by their  respective officers thereunto  duly authorized as  of the date
first written above.

<TABLE>
<S>                                           <C>
CHIPCOM CORPORATION                           3COM CORPORATION

By: /s/John Robert Held                       By: /s/Eric A. Benhamou
Title: President and Chief Executive Officer  Title: Chairman and Chief Executive Officer

                                              CHIPCOM ACQUISITION CO., INC.

                                              By: /s/Eric A. Benhamou
                                              Title: President
</TABLE>

                                      A-31
<PAGE>
                                                                         ANNEX B

                                          July 26, 1995

The Board of Directors
Chipcom Corporation
Southborough Office Park
118 Turnpike Road
Southborough, MA 01772

Attention: Mr. J. Robert Held, President and Chief Executive Officer
        Mr. Robert P. Badavas, Senior Vice President - Finance and Chief
Financial Officer

Gentlemen:

    You have requested our opinion as to the fairness, from a financial point of
view, to the stockholders of Chipcom Corporation (the "Company"), of the
consideration to be received by the stockholders pursuant to the terms of the
proposed Agreement and Plan of Merger (the "Agreement") dated July 26, 1995 by
and among the Company, Chipcom Acquisition Corporation and 3Com Corporation (the
"Acquiror"). Capitalized terms used herein shall have the meaning used in the
Agreement unless otherwise defined herein.

    Pursuant to the Agreement, each outstanding share of common stock of Chipcom
is proposed to be converted into and represent the right to receive such number
of shares of the Acquiror's common stock as is equal to the Conversion Number.
The Conversion Number is 0.53 (subject to adjustment in the event of a stock
split or stock dividend effected between the date hereof and the Effective
Time).

    Wessels, Arnold & Henderson, L.L.C. ("Wessels, Arnold & Henderson"), as part
of its investment banking services, is regularly engaged in the valuation of
businesses and their securities in connection with mergers and acquisitions,
corporate restructurings, negotiated underwritings, secondary distributions of
listed and unlisted securities, private placements and valuations for corporate
and other purposes. We have acted as financial advisor to the Chipcom Board of
Directors in connection with the Merger and will receive fees for our services,
including the rendering of this opinion. In the ordinary course of business,
Wessels, Arnold & Henderson acts as a market maker and broker in the publicly
traded securities of the Acquiror and receives customary compensation in
connection therewith, and also provides research coverage for the Acquiror. In
the ordinary course of business, Wessels, Arnold & Henderson actively trades in
the publicly traded securities of the Acquiror for its own account and for the
accounts of its customers and, accordingly, may at any time hold a long or short
position in such securities.

    In connection with our review of the Merger, and in arriving at our opinion,
we have: (i) reviewed and analyzed the financial terms of the Agreement, (ii)
reviewed and analyzed certain publicly available financial statements and other
information of the Company and the Acquiror; (iii) reviewed and analyzed certain
internal financial statements and other financial and operating data concerning
the Company prepared by the management of the Company; (iv) reviewed and
analyzed certain internal financial statements and other financial and operating
data concerning the Acquiror prepared by the management of the Acquiror; (v)
reviewed and analyzed certain financial projections prepared by the management
of the Company; (vi) reviewed

                                      B-1
<PAGE>
Chipcom Corporations/3Com Corporation Merger
Fairness Opinion
July 26, 1995
Page 2

and analyzed certain financial projections prepared by the management of the
Acquiror; (vii) conducted discussions with members of the senior management of
the Company with respect to the business and prospects of the Company; (viii)
conducted discussions with members of the senior management of the Acquiror with
respect to the business and prospects of the Acquiror; (ix) analyzed the pro
forma impact of the Merger on the Acquiror's results of operations; (x) reviewed
the reported prices and trading activity for the Company's Common Stock and the
Acquiror's Common Stock; (xi) compared the financial performance of the Company
and the Acquiror and the prices of the Company's Common Stock and the Acquiror's
Common Stock with that of certain other comparable publicly-traded companies and
their securities; (xii) reviewed the financial terms, to the extent publicly
available, of certain comparable merger transactions; and (xiii) participated in
discussions and negotiations among representatives of the Company and the
Acquiror and their respective financial and legal advisors. In addition, we have
conducted such other analyses and examinations and considered such other
financial, economic and market criteria as we have deemed necessary in arriving
at our opinion.

    In rendering our opinion, we have assumed and relied upon the accuracy and
completeness of the financial, legal, tax, operating and other information
provided to us by the Company and the Acquiror, and have not independently
verified such information. Further, our opinion is based on the assumption that
the Merger will be accounted for as pooling-of-interests. We have not performed
an independent evaluation or appraisal of any of the respective assets or
liabilities of the Company or the Acquiror and we have not been furnished with
any such valuations or appraisals. With respect to the financial forecasts, we
have assumed that they have been reasonably prepared on the bases reflecting the
best currently available estimates and judgments of the management of the
Company and the Acquiror, as the case may be, as to the respective future
financial performance of the Company and the Acquiror.

    It is understood that this letter is for the information of the Board of
Directors of the Company only, and this letter shall not be published or
otherwise used and no public references to Wessels, Arnold & Henderson, L.L.C.
shall be made without our prior written consent, which consent shall not be
unreasonably withheld; provided, however, that this letter may be included in
its entirety in the proxy statement submitted to the stockholders of the Company
and the Acquiror for the purpose of approving the Merger. Further, our opinion
speaks only as of the date hereof and is based on the conditions as they exist
and information which we have been supplied as of the date hereof.

    Based on our experience as investment bankers and subject to the foregoing,
including the various assumptions and limitations set forth herein, it is our
opinion that as of the date hereof, the consideration to be received by the
holders of the Company's Common Stock pursuant to the Agreement is fair from a
financial point of view to the holders of the Company's Common Stock.

                                          Very truly yours,

                                          Wessels, Arnold & Henderson, L.L.C

                                          By:       /s/ BRYSON D. HOLLIMON
                                          --------------------------------------
                                                      Managing Director

                                      B-2
<PAGE>

CHIPCOM CORPORATION
PROXY FOR THE SPECIAL MEETING OF STOCKHOLDERS
TO BE HELD ON OCTOBER 12, 1995

THIS PROXY IS SOLICITED
ON BEHALF OF
THE BOARD OF DIRECTORS OF The Company


The undersigned, revoking all prior proxies, hereby appoint(s) John Robert Held,
Robert P. Badavas and Peter B. Tarr, and each of them, with full power of
substitution, as proxies to represent and vote as designated herein, all shares
of stock of Chipcom Corporation, a Delaware corporation (the "Company"), which
the undersigned would be entitled to vote if personally present at the Special
Meeting of Stockholders of the Company to be held at the offices of Hale and
Dorr, 60 State Street, Boston, Massachusetts, on Thursday, October 12, 1995 at
9:00 a.m., local time, and at any postponements or adjournments thereof.
PROXY
PROXY
V
V
FOLD AND DETACH HERE


I plan to attend
the meeting.
X
1. To approve and adopt an Agreement and Plan of Merger, dated as of July 26,
1995, among the Company, 3Com Corporation, a California corporation ("3Com"),
and Chipcom Acquisition Corporation, a Delaware corporation and wholly-owned
subsidiary of 3Com ("Sub"), pursuant to which, among other things, (i) Sub will
be merged with and into the Company which will be the surviving corporation and
(ii) each share of common stock, $.02 par value per share, of the Company will
be converted into the right to receive 1.06 shares of common stock, no par, of
3Com.
FOR
AGAINST
ABSTAIN
X
X
X
IN THEIR DISCRETION, THE PROXIES ARE AUTHORIZED TO VOTE UPON SUCH MATTERS AS MAY
PROPERLY COME BEFORE THE MEETING OR ANY ADJOURNMENT THEREOF.
This proxy when properly executed will be voted in the manner directed herein by
the undersigned stockholder. If no direction is given, this proxy will be voted
for proposals 1 and 2. Attendance of the undersigned at the meeting or at any
adjournment thereof will not be deemed to revoke this proxy unless the
undersigned shall revoke this proxy in writing before it is exercised.
2. To transact such other business as may properly come before the meeting or
any adjournment or adjournments of the meeting.
FOR
AGAINST
ABSTAIN
Dated:        , 1995
Signature
Signature if held jointly
Please sign exactly as name appears hereon. When shares are held by joint
owners, both should sign. When signing as attorney, executor, administrator,
trustee or guardian, please give the full title as such. If a corporation,
please sign in full corporate name by President or other authorized officer. If
a partnership, please sign in partnership name by authorized person.
X
X
X
V
V
FOLD AND DETACH HERE


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