SUMMIT VENTURES IV LP
SC 13G/A, 2000-02-14
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                               (AMENDMENT NO. 2 )*

                              E-TEK Dynamics, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                               Common Stock, $.001
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    26924010
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 1999
- --------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

         Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

                   [ ] Rule 13d-1(b)
                   [ ] Rule 13d-1(c)
                   [X] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                               Page 1 of 39 Pages
<PAGE>
- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 2 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Summit Ventures IV, L.P.
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware limited partnership
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        PN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 3 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Summit Partners IV, L.P.
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware limited partnership
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        PN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 4 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Stamps, Woodsum & Co. IV
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Massachusetts general partnership
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        PN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 5 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Summit/E-TEK Holdings, L.L.C.
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware limited liability company
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                0 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                0 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        0 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        0%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        CO
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 6 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Summit Investors III, L.P.
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware limited partnership
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        PN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 7 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Summit Subordinated Debt Fund II, L.P.
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware limited partnership
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        PN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 8 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Summit Partners SD II, LLC
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware limited liability company
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        CO
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 9 OF 395 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        E. Roe Stamps, IV
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 10 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Stephen G. Woodsum
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 11 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Gregory M. Avis
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 12 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Martin J. Mannion
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 13 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Bruce R. Evans
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 14 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Thomas S. Roberts
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 15 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Walter G. Kortschak
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 16 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Joseph F. Trustey
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 17 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Kevin P. Mohan
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

- ---------------------                                        -------------------
CUSIP NO.    26924010                    13G                 PAGE 18 OF 39 PAGES
- ---------------------                                        -------------------

================================================================================
  1     NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

        Peter Y. Chung
- --------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
                                                                 (a)[ ]
                                                                 (b)[ ]
- --------------------------------------------------------------------------------
  3     SEC USE ONLY


- --------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------
                           5    SOLE VOTING POWER

                                0 shares
        NUMBER OF          -----------------------------------------------------
         SHARES            6    SHARED VOTING POWER
      BENEFICIALLY
        OWNED BY                12,850,517 shares
          EACH             -----------------------------------------------------
        REPORTING          7    SOLE DISPOSITIVE POWER
         PERSON
          WITH:                 0 shares
                           -----------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                12,850,517 shares
- --------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        12,850,517 shares
- --------------------------------------------------------------------------------
 10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES *
        [ ]
- --------------------------------------------------------------------------------
 11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        19.1%
- --------------------------------------------------------------------------------
 12     TYPE OF REPORTING PERSON *

        IN
================================================================================
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>

                                  Schedule 13G
                                  ------------

Item 1(a).        Name of Issuer: E-TEK Dynamics, Inc.

Item 1(b).        Address of Issuer's Principal Executive Offices: 1865 Lundy
                  Ave, San Jose, CA 95131.

Item 2(a).        Names of Persons Filing: Summit/E-TEK Holdings, L.L.C., Summit
                  Ventures IV, L.P., Summit Partners IV, L.P., Stamps, Woodsum &
                  Co. IV, L.P., Summit Investors III, L.P., Summit Subordinated
                  Debt Fund II, L.P., Summit Partners SD II, LLC, and Messrs. E.
                  Roe Stamps, IV, Stephen G. Woodsum, Gregory M. Avis, Martin J.
                  Mannion, Bruce R. Evans, Thomas S. Roberts, Walter G.
                  Kortschak, Joseph F. Trustey, Kevin P. Mohan and Peter Y.
                  Chung.

                  Summit Partners IV, L.P. is the sole general partner of Summit
                  Ventures IV, L.P. Stamps, Woodsum & Co. IV is the sole general
                  partner of Summit Partners IV, L.P. Summit Partners SD II, LLC
                  is the sole general partner of Summit Subordinated Debt Fund
                  II, L.P. Messrs. Stamps, Woodsum, Avis, Mannion, Evans,
                  Roberts, Kortschak, Trustey, Mohan and Chung are individual
                  general partners of Stamps, Woodsum & Co. IV, Summit Investors
                  III, L.P., and Summit Partners SD II, LLC.

                  As of December 31, 1999, Summit/E-TEK Holdings, L.L.C. had
                  distributed all of its shares of Common Stock of E-TEK
                  Dynamics, Inc. to Summit Ventures IV, L.P., Summit Investors
                  III, L.P., and Summit Subordinated Debt Fund II, L.P. As such,
                  as of December 31, 1999, Summit E-TEK Holdings, L.L.C. did not
                  own any shares of E-TEK Dyanmics, Inc.

                  As of December 31, 1999, John A. Genest was no longer
                  affiliated with any of the "Entities" (as defined below).

Item 2(b).        Address of Principal Business Office or, if None, Residence:
                  The address of the principal business office of Summit
                  Ventures IV, L.P., Summit Partners IV, L.P., Stamps, Woodsum &
                  Co. IV, L.P., Summit Investors III, L.P., Summit Subordinated
                  Debt Fund II, L.P., Summit Partners SD II, LLC, and Messrs. E.
                  Roe Stamps, IV, Stephen G. Woodsum, John A. Martin J. Mannion,
                  Bruce R. Evans, Thomas S. Roberts, Joseph F. Trustey, and
                  Kevin P. Mohan is Summit Partners, 600 Atlantic Avenue,
                  Boston, Massachusetts 02210. The address of the principal
                  business office of Summit/E-TEK Holdings, L.L.C. and Messrs.
                  Avis, Kortschak and Chung is Summit Partners, 499 Hamilton
                  Avenue, Palo Alto, California 94301.

                              Page 19 of 39 Pages
<PAGE>

Item 2(c).        Citizenship: Each of Summit Partners SD II, LLC and
                  Summit/E-TEK Holdings, L.L.C. is a limited liability company
                  organized under the laws of the State of Delaware. Each of
                  Summit Ventures IV, L.P., Summit Partners IV, L.P., Summit
                  Investors III, L.P. and Summit Subordinated Debt Fund II, L.P.
                  is a limited partnership organized under the laws of the State
                  of Delaware. Stamps, Woodsum & Co. IV, L.P. is a general
                  partnership organized under the laws of the Commonwealth of
                  Massachusetts. Each of Messrs. Stamps, Woodsum, Avis, Mannion,
                  Evans, Roberts, Kortschak, Trustey, Mohan and Chung is a
                  United States citizen.

Item 2(d).        Title of Class of Securities: Common Stock, $.001 par value
                  per share.

Item 2(e).        CUSIP Number:26924010

Item 3.           If this statement is filed pursuant to Rules 13d-1(b), or
                  13d-2(b), check whether the person filing is a:

                  Not Applicable.

Item 4.           Ownership.

                  (a)   Amount Beneficially Owned:

                        Each of Summit Ventures IV, L.P., Summit Partners IV,
                        L.P., Stamps, Woodsum & Co. IV, L.P., Summit Investors
                        III, L.P., Summit Subordinated Debt Fund II, L.P. and
                        Summit Partners SD II, LLC (individually an "Entity" and
                        collectively the "Entities") may be deemed to own
                        beneficially 12,850,517 shares of Common Stock as of
                        December 31, 1999. Each of Messrs. Stamps, Woodsum,
                        Avis, Mannion, Evans, Roberts, Kortschak, Trustey, Mohan
                        and Chung may be deemed to own beneficially 12,850,517
                        shares of Common Stock as of December 31, 1999.
                        Summit/E-TEK Holdings, L.L.C. may be deemed to own
                        beneficially 0 shares of Common Stock as of December 31,
                        1999.

                        As of December 31, 1999, Summit Ventures IV, L.P. was
                        the record holder of 11,501,213 shares of Common Stock.
                        As of December 31, 1999, Summit Subordinated Debt Fund
                        II, L.P. was the record holder of 1,220,799 shares of
                        Common Stock. As of December 31, 1999, Summit Investors
                        III, L.P. was the record holder of 128,505 shares of
                        Common Stock. The shares held of record by Summit
                        Ventures IV, L.P., Summit Subordinated Debt Fund II,
                        L.P., and Summit Investors III, L.P. are referred to
                        herein collectively as the "Record Shares." By

                              Page 20 of 39 Pages
<PAGE>

                        virtue of the affiliate relationships among the
                        Entities, each Entity may be deemed to own beneficially
                        all of the Record Shares. Hence, each Entity may be
                        deemed to own beneficially 12,850,517 shares of Common
                        Stock. In their capacities as individual general
                        partners of Stamps, Woodsum & Co. IV, Summit Investors
                        III, L.P., and Summit Partners SD II, LLC each of
                        Messrs. Stamps, Woodsum, Avis, Mannion, Evans, Roberts,
                        Kortschak, Trustey, Mohan and Chung may be deemed to own
                        beneficially 12,850,517 shares of Common Stock.

                        Each of the reporting persons expressly disclaims
                        beneficial ownership of any shares of Common Stock of
                        E-TEK Dynamics, Inc., except in the case of Summit
                        Ventures IV, L.P. for the 11,501,213 shares which it
                        holds of record, Summit Subordinated Debt Fund II, L.P.
                        for the 1,220,799 shares which it holds of record, and
                        Summit Investors III, L.P. for the 128,505 shares shares
                        which it holds of record.

                  (b)   Percent of Class:

                               Summit/E-TEK Holdings, L.L.C.: 0%
                               Summit Ventures IV, L.P.: 19.1%
                               Summit Partners IV, L.P.: 19.1%
                               Stamps, Woodsum & Co. IV: 19.1%
                               Summit Investors III, L.P.: 19.1%
                               Summit Subordinated Debt Fund II, L.P.: 19.1%
                               Summit Partners SD II, LLC:  19.1%
                               E. Roe Stamps, IV: 19.1%
                               Stephen G. Woodsum: 19.1%
                               Martin J. Mannion: 19.1%
                               Gregory M. Avis: 19.1%
                               Bruce R. Evans: 19.1%
                               Walter G. Kortschak: 19.1%
                               Thomas S. Roberts: 19.1%
                               Joseph F. Trustey: 19.1%
                               Kevin P. Mohan: 19.1%
                               Peter Y. Chung: 19.1%

      The foregoing percentages are calculated based on the 67,395,069 shares of
      Common Stock reported to be outstanding on E-TEK Dynamics' Form 10-Q for
      the quarterly period ended October 2, 1999.

                  (c)   Number of shares as to which such person has:

                        (i)    sole power to vote or to direct the vote:

                              Page 21 of 39 Pages
<PAGE>

                               0 shares for each reporting person

                        (ii)   shared power to vote or to direct the vote:

                                    Summit/E-TEK Holdings, L.L.C.:  0
                                    Summit Ventures IV, L.P.:  12,850,517
                                    Summit Partners IV, L.P.:  12,850,517
                                    Stamps, Woodsum & Co. IV:  12,850,517
                                    Summit Investors III, L.P.:  12,850,517
                                    Summit Subordinated Debt Fund II, L.P.:
                                    12,850,517
                                    Summit Partners SD II, LLC:  12,850,517
                                    E. Roe Stamps, IV:  12,850,517
                                    Stephen G. Woodsum:  12,850,517
                                    Martin J. Mannion:  12,850,517
                                    Gregory M. Avis:  12,850,517
                                    Bruce R. Evans:  12,850,517
                                    Walter G. Kortschak:  12,850,517
                                    Thomas S. Roberts:  12,850,517
                                    Joseph F. Trustey:  12,850,517
                                    Kevin P. Mohan:  12,850,517
                                    Peter Y. Chung:  12,850,517

                        (iii)  sole power to dispose or direct the disposition
                               of:

                                    0 shares for each reporting person

                        (iv)   shared power to dispose or direct the disposition
                               of:

                                    Summit/E-TEK Holdings, L.L.C.:  0
                                    Summit Ventures IV, L.P.:  12,850,517
                                    Summit Partners IV, L.P.:  12,850,517
                                    Stamps, Woodsum & Co. IV:  12,850,517
                                    Summit Investors III, L.P.:  12,850,517
                                    Summit Subordinated Debt Fund II, L.P.:
                                    12,850,517
                                    Summit Partners SD II, LLC:  12,850,517
                                    E. Roe Stamps, IV:  12,850,517
                                    Stephen G. Woodsum:  12,850,517
                                    Martin J. Mannion:  12,850,517
                                    Gregory M. Avis:  12,850,517
                                    Bruce R. Evans:  12,850,517
                                    Walter G. Kortschak:  12,850,517
                                    Thomas S. Roberts:  12,850,517
                                    Joseph F. Trustey:  12,850,517
                                    Kevin P. Mohan:  12,850,517

                              Page 22 of 39 Pages
<PAGE>

                                    Peter Y. Chung:  12,850,517

Item 5.           Ownership of Five Percent or Less of a Class.

                  Not Applicable.

Item 6.           Ownership of More than Five Percent on Behalf of Another
                  Person.

                  Not Applicable.

Item 7.           Identification and Classification of the Subsidiary which
                  Acquired the Security Being Reported on By the Parent Holding
                  Company.


                  Not Applicable.

Item 8.           Identification and Classification of Members of the Group.

                  Not Applicable. The reporting persons expressly disclaim
                  membership in a "group" as defined in Rule 13d-1(b)(1)(ii)(J).

Item 9.           Notice of Dissolution of Group.

                  Not Applicable.

Item 10.          Certification.

                  Not Applicable. This statement on Schedule 13G is not filed
                  pursuant to Rule 13d-1(b).


                              Page 23 of 39 Pages
<PAGE>

                                   SIGNATURES

      After reasonable inquiry and to the best of our knowledge and belief, we
certify that the information set forth in this statement is true, complete and
correct. We also hereby agree to file this statement jointly pursuant to the
Agreement listed on Exhibit 1 hereto.
                    ---------

Dated:  February 11, 2000.

SUMMIT VENTURES IV, L.P.                         SUMMIT SUBORDINATED DEBT
                                                 FUND II, L.P.
By:   Summit Partners IV, L.P.                   By: Summit Partners SD II, LLC

By:   Stamps, Woodsum & Co. IV
                                                 By:       *
                                                    ---------------------
      By:       *                                   E. Roe Stamps, IV
          -------------------                       General Partner
          E. Roe Stamps, IV
          General Partner

                                                 SUMMIT PARTNERS SD II, LLC
SUMMIT INVESTORS III, L.P.


By:             *                                By:       *
      -----------------------                       ---------------------
          General Partner                           E. Roe Stamps, IV
                                                    General Partner

SUMMIT PARTNERS IV, L.P.                         STAMPS, WOODSUM & CO. IV

By:   Stamps, Woodsum & Co. IV

      By:         *                              By:       *
         ---------------------                      ---------------------
         E. Roe Stamps, IV                          E. Roe Stamps, IV
         General Partner                            General Partner


                              Page 24 of 39 Pages
<PAGE>


SUMMIT/E-TEK HOLDINGS, LLC                                 *
                                                    ---------------------
                                                    Walter G. Kortschak
By:  Summit Ventures IV, L.P.
      Its Manager                                          *
                                                    ---------------------
                                                    E. Roe Stamps, IV
By: Summit Partners IV, L.P.
      Its General Partner                                  *
                                                    ---------------------
                                                    Stephen G. Woodsum
By: Stamps, Woodsum & Co. IV
      Its General Partner                                  *
                                                    ---------------------
                                                    Gregory M. Avis
By:        *
    -----------------
      General Partner                                      *
                                                    ---------------------
                                                    Martin J. Mannion

                                                           *
                                                    ---------------------
                                                    Bruce R. Evans

                                                           *
                                                    ---------------------
                                                    Thomas S. Roberts

                                                           *
                                                    ---------------------
                                                    Joseph F. Trustey

                                                           *
                                                    ---------------------
                                                    Kevin P. Mohan


                                                           *
                                                    ---------------------
                                                    Peter Y. Chung



                                           *By:     /s/ Thomas F. Farb
                                                    ---------------------
                                                    Thomas F. Farb
                                                    Attorney-in-Fact


* Pursuant to Powers of Attorney on file with the Commission, which Powers of
Attorney are incorporated herein by reference. Copies of such Powers of Attorney
are attached hereto as Exhibit 2.
                       ---------

                              Page 25 of 39 Pages


                                                                      EXHIBIT 1
                                                                      ---------

                                    AGREEMENT

      Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934,
the undersigned hereby agree that only one statement containing the information
required by Schedule 13G need be filed with respect to the ownership by each of
the undersigned of shares of Common Stock of E-TEK Dynamics, Inc.

      This agreement may be executed in any number of counterparts, each of
which shall be deemed an original.

      EXECUTED this 11 day of February, 2000.

SUMMIT VENTURES IV, L.P.                         SUMMIT SUBORDINATED DEBT
                                                 FUND II, L.P.
By:   Summit Partners IV, L.P.                   By: Summit Partners SD II, LLC

By:   Stamps, Woodsum & Co. IV
                                                 By:       *
                                                    ---------------------
      By:       *                                   E. Roe Stamps, IV
          -------------------                       General Partner
          E. Roe Stamps, IV
          General Partner

                                                 SUMMIT PARTNERS SD II, LLC
SUMMIT INVESTORS III, L.P.


By:             *                                By:       *
      -----------------------                       ---------------------
          General Partner                           E. Roe Stamps, IV
                                                    General Partner

SUMMIT PARTNERS IV, L.P.                         STAMPS, WOODSUM & CO. IV

By:   Stamps, Woodsum & Co. IV

      By:         *                              By:       *
         ---------------------                      ---------------------
         E. Roe Stamps, IV                          E. Roe Stamps, IV
         General Partner                            General Partner


                              Page 26 of 39 Pages
<PAGE>


SUMMIT/E-TEK HOLDINGS, LLC                                 *
                                                    ---------------------
                                                    Walter G. Kortschak
By:  Summit Ventures IV, L.P.
      Its Manager                                          *
                                                    ---------------------
                                                    E. Roe Stamps, IV
By: Summit Partners IV, L.P.
      Its General Partner                                  *
                                                    ---------------------
                                                    Stephen G. Woodsum
By: Stamps, Woodsum & Co. IV
      Its General Partner                                  *
                                                    ---------------------
                                                    Gregory M. Avis
By:        *
    -----------------
      General Partner                                      *
                                                    ---------------------
                                                    Martin J. Mannion

                                                           *
                                                    ---------------------
                                                    Bruce R. Evans

                                                           *
                                                    ---------------------
                                                    Thomas S. Roberts

                                                           *
                                                    ---------------------
                                                    Joseph F. Trustey

                                                           *
                                                    ---------------------
                                                    Kevin P. Mohan


                                                           *
                                                    ---------------------
                                                    Peter Y. Chung



                                           *By:     /s/ Thomas F. Farb
                                                    ---------------------
                                                    Thomas F. Farb
                                                    Attorney-in-Fact


* Pursuant to Powers of Attorney on file with the Commission, which Powers of
Attorney are incorporated herein by reference. Copies of such Powers of Attorney
are attached hereto as Exhibit 2.
                       ---------

                              Page 27 of 39 Pages


                                                                       EXHIBIT 2
                                                                       ---------

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that each person whose signature
appears below hereby constitutes and appoints each and any of E. Roe Stamps, IV,
Stephen G. Woodsum, Gregory M. Avis, Walter G. Kortschak and Thomas F. Farb his
true and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him and in his name, place and stead, in any and all
capacities (until revoked in writing) to sign any and all instruments,
certificates and documents required to be executed on behalf of himself
individually or on behalf of each or any of Summit Ventures, L.P., SP (1984),
L.P. (f/k/a Summit Partners, L.P.), Stamps, Woodsum & Co., Summit Partners'
Holdings, L.P., Summit Ventures II, L.P., Summit Partners II, L.P., Stamps,
Woodsum & Co. II, SV Eurofund C.V., SV International, L.P., Summit Investors,
L.P., Summit Investors II, L.P., Summit Investors III, L.P., Summit Ventures
III, L.P., Summit Partners III, L.P., Stamps, Woodsum & Co. III, Summit Ventures
IV, L.P., Summit Partners IV, L.P., Stamps, Woodsum & Co., IV, Summit
Subordinated Debt Fund, L.P., Summit Partners SD, L.P., Summit E-Tek Holdings,
LLC, SW Management Corp., Summit Partners, L.P., Summit Master Company, LLC,
Summit Subordinated Debt Fund II, L.P., Summit Partners SD II, LLC, Summit
Ventures V, L.P., Summit Partners V, L.P., Summit Partners, LLC, Summit V
Advisors Fund, L.P., Summit V Advisors Fund (QP), L.P. and Summit V Companion
Fund, L.P., pursuant to sections 13 and 16 of the Securities Exchange Act of
1934, as amended (the "Exchange Act"), and any and all regulations promulgated
thereunder, and to file the same, with all exhibits thereto, and any other
documents in connection therewith, with the Securities and Exchange Commission,
and with any other entity when and if such is mandated by the Exchange Act or by
the By-laws of the National Association of Securities Dealers, granting unto
said attorney-in-fact and agent full power and authority to do and perform each
and every act and thing requisite and necessary fully to all intents and
purposes as she might or could do in person thereby ratifying and confirming all
that said attorney-in-fact and agent, or her substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.


                               Page 28 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                 /s/ E. Roe Stamps, IV
                                                 -----------------------------
                                                 E. Roe Stamps, IV

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came E. Roe
Stamps, IV, known to me to be the person described and who executed the
foregoing instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------


                              Page 29 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                 /s/ Stephen G. Woodsum
                                                 -----------------------------
                                                 Stephen G. Woodsum

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came Stephen G.
Woodsum, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------


                              Page 30 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                 /s/ Martin J. Mannion
                                                 -----------------------------
                                                 Martin J. Mannion

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came Martin J.
Mannion, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]


                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------

                              Page 31 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
8th day of February, 2000.

                                                 /s/ Gregory M. Avis
                                                 -----------------------------
                                                 Gregory M. Avis

State of California                         )
                                            ) ss:
County of Santa Clara                       )

         On this 8th day of February, 2000, before me personally came Gregory M.
Avis, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------


                              Page 32 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                  /s/ Thomas S. Roberts
                                                 -----------------------------
                                                 Thomas S. Roberts

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came Thomas S.
Roberts, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------

                              Page 33 of 39 Pages

<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                 /s/ Bruce R. Evans
                                                 -----------------------------
                                                 Bruce R. Evans

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came Bruce R.
Evans, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]


                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------


                              Page 34 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
8th day of February, 2000.

                                                 /s/ Walter G. Kortschak
                                                 -----------------------------
                                                 Walter G. Kortschak

State of California                 )
                                    ) ss:
County of Santa Clara               )

         On this 8th day of February, 2000, before me personally came Walter G.
Kortschak, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------

                              Page 35 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                 /s/ Joseph F. Trustey
                                                 -----------------------------
                                                 Joseph F. Trustey

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came Joseph F.
Trustey, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------

                              Page 36 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                 /s/ Kevin P. Mohan
                                                 -----------------------------
                                                 Kevin P. Mohan

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came Kevin P.
Mohan, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------

                              Page 37 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
8th day of February, 2000.

                                                 /s/ Peter Y. Chung
                                                 -----------------------------
                                                 Peter Y. Chung

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 8th day of February, 2000, before me personally came Peter Y.
Chung, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------



                              Page 38 of 39 Pages
<PAGE>


         IN WITNESS WHEREOF, this Power of Attorney has been signed as of the
7th day of February, 2000.

                                                 /s/ Thomas F. Farb
                                                 -----------------------------
                                                 Thomas F. Farb

Commonwealth of Massachusetts       )
                                    ) ss:
County of Suffolk                   )

         On this 7th day of February, 2000, before me personally came Thomas F.
Farb, known to me to be the person described and who executed the foregoing
instrument that he acknowledged that he executed the same.

[Notary Seal]

                                                  /s/ Cynthia R. Freedman
                                                 -----------------------------
                                                 Notary Public

                                                 My Commission expires:
                                                 October 20, 2000
                                                 -----------------------------

                              Page 39 of 39 Pages


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