HYBRID NETWORKS INC
SC 13G, 1998-02-13
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  Schedule 13G
                                 (Rule 13d-102)

             INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                             (Amendment No._______)*



                              Hybrid Networks, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    44860K102
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


*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
disclosures provided in a prior cover page.

The information required on 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).


                         (Continued on following pages)


                               Page 1 of 21 Pages
                       Exhibit Index Contained on Page 19

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                   Page 2 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel IV L.P. ("A IV")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         795,870 shares,  except that A IV Assoc.,  the general partner of A IV,
          BENEFICIALLY                       and Breyer,  Evnin,  Hill,  Klingenstein, Patterson,  Sednaoui, Swartz,
       OWNED BY EACH REPORTING               and  SFP,  the general partners of A IV  Assoc.,  may be deemed to have
             PERSON                          shared  voting power with respect to such shares.
              WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             See response to row 5
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             795,870 shares,  except that A IV Assoc.,  the general partner of A IV,
                                             and Breyer, Evnin, Hill, Klingenstein, Patterson, Sednaoui, Swartz, and
                                             SFP, the general partners of A IV Assoc.,  may be deemed to have shared
                                             dispositive power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             See response to row 7
- ----------- --------------------------------------------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       795,870
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   7.7%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO.  44860K102                                            13 G                   Page 3 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel Keiretsu L.P. ("AKTSU")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         16,511  shares,  except  that  AP&C,  the  general partner of AKTSU and
           BENEFICIALLY                      Breyer,  Evnin,  Hill,  Patterson, Sednaoui and Swartz, the officers of
     OWNED BY EACH REPORTING                 AP&C,  may be  deemed to have shared voting powers with respect to such
              PERSON                         shares.
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             See response to row 5
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             16,511  shares,  except  that AP&C,  the  general  partner of AKTSU and
                                             Breyer,  Evnin, Hill,  Patterson,  Sednaoui and Swartz, the officers of
                                             AP&C, may be deemed to have shared  dispositive  powers with respect to
                                             such shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             See response to row 7
- ----------- --------------------------------------------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       16,511
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   0.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                   Page 4 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel Investors '95 L.P. ("AI95")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         37,363  shares,   except  that  Breyer,   Evnin,  Hill,   Klingenstein,
           BENEFICIALLY                      Patterson,  Sednaoui and Swartz,  the general  partners of AI95, may be
     OWNED BY EACH REPORTING                 deemed to have shared voting power with respect to such shares.
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             See response to row 5.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             37,363  shares,   except  that  Breyer,   Evnin,  Hill,   Klingenstein,
                                             Patterson,  Sednaoui and Swartz,  the general  partners of AI95, may be
                                             deemed to have shared dispositive power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             See response to row 7.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       37,363
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   0.4%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                   Page 5 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Swartz Family Partnership L.P. ("SFP")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             795,870 shares, of which 795,870 are shares directly owned by A IV. SFP
                                             is a general  partner of A IV Assoc.,  the general partner of A IV, and
                                             may be deemed to have shared voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             795,870 shares, of which 795,870 are shares directly owned by A IV. SFP
                                             is a general  partner of A IV Assoc.,  the general partner of A IV, and
                                             may be deemed to have  shared  dispositive  power with  respect to such
                                             shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       795,870
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                           [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   7.7%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                   Page 6 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel IV Associates L.P. ("A IV Assoc.")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             795,870  shares,  of which 795,870 are shares directly owned by A IV. A
                                             IV  Assoc.  is the  general  partner  of A IV and may be deemed to have
                                             shared voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER 
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             795,870  shares,  of which 795,870 are shares directly owned by A IV. A
                                             IV  Assoc.  is the  general  partner  of A IV and may be deemed to have
                                             shared dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       795,870
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   7.7%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                   Page 7 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel Partners & Co. Inc. ("AP&C")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             16,511 shares, of which 16,511 shares are directly owned by AKTSU. AP&C
                                             is the general partner of AKTSU and may be deemed to have shared voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             16,511 shares, of which 16,511 shares are directly owned by AKTSU. AP&C
                                             is the general partner of AKTSU and may be deemed to have shared voting
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       16,511
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   0.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   CO
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                   Page 8 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     James W. Breyer ("Breyer")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511 are shares  directly  owned by  AKTSU,  and  37,363  are  shares
                                             directly  owned by AI95.  Breyer  may be deemed to have  shared  voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511 are shares  directly  owned by  AKTSU,  and  37,363  are  shares
                                             directly owned by AI95. Breyer may be deemed to have shared dispositive
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       849,744
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   8.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                   Page 9 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Luke B. Evnin ("Evnin")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511 are shares  directly  owned by  AKTSU,  and  37,363  are  shares
                                             directly owned by AI95. Evnin may be deemed to have shared voting power
                                             with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511 are shares  directly  owned by  AKTSU,  and  37,363  are  shares
                                             directly owned by AI95. Evnin may be deemed to have shared  dispositive
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       849,744
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   8.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                  Page 10 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Eugene D. Hill, III ("Hill")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly owned by AI95.  Hill may be deemed to have shared voting power
                                             with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly  owned by AI95.  Hill may be deemed to have shared  dispositve
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       849,744
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   8.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                  Page 11 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Paul H. Klingenstein ("Klingenstein")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             833,233 shares, of which 795,870 are shares directly owned by A IV, and
                                             37,363 are shares directly owned by AI95. Klingenstein may be deemed to
                                             have shared voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             833,233 shares, of which 795,870 are shares directly owned by A IV, and
                                             37,363 are shares directly owned by AI95. Klingenstein may be deemed to
                                             have shared dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       833,233
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   8.0%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                  Page 12 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Arthur C. Patterson ("Patterson")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         19,117 shares, of which  19,117 shares are directly owned by Ellmore C.
           BENEFICIALLY                      Patterson Partners  ("ECPP").  Patterson is the general partner of ECPP
     OWNED BY EACH REPORTING                 and  may  be  deemed to  have  sole voting  power with  respect to such
              PERSON                         shares.
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly  owned by AI95.  Patterson may be deemed to have shared voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             19,117 shares,  of which 19,117 shares are directly owned by Ellmore C.
                                             Patterson Partners  ("ECPP").  Patterson is the general partner of ECPP
                                             and may be deemed to have sole  dispositive  power with respect to such
                                             shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly  owned  by  AI95.  Patterson  may be  deemed  to  have  shared
                                             dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       868,861
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                           [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   8.4%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                  Page 13 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     G. Carter Sednaoui ("Sednaoui")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly  owned by AI95.  Sednaoui may be deemed to have shared  voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly  owned  by  AI95.  Sednaoui  may  be  deemed  to  have  shared
                                             dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       849,744
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   8.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>          <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 44860K102                                             13 G                  Page 14 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     James R. Swartz ("Swartz")
                     Tax ID Number:
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)   [ ]        (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly  owned by AI95.  Swartz  may be deemed to have  shared  voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             849,744  shares,  of which 795,870 are shares  directly  owned by A IV,
                                             16,511  are  shares  directly  owned by AKTSU,  and  37,363  are shares
                                             directly owned by AI95. Swartz may be deemed to have shared dispositive
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       849,744
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                           [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   8.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


                                                                   Page 15 of 21

ITEM 1(a).        NAME OF ISSUER:

                  Hybrid Networks, Inc.

ITEM 1(b).        ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  10161 Bubb Road
                  Cupertino, CA 95014-4167

ITEM 2(a).        NAME OF PERSONS FILING:

                  This  Statement  is filed by Accel  IV L.P.  ("A  IV"),  Accel
Keiretsu L.P. ("AKTSU"),  Accel Investors '95 L.P. ("AI95"), Accel IV Associates
L.P.  ("A IV  Assoc."),  Accel  Partners  & Co.  Inc.  ("AP&C"),  Swartz  Family
Partnership L.P. (SFP"),  James W. Breyer  ("Breyer"),  Luke B. Evnin ("Evnin"),
Eugene D. Hill, III ("Hill"), Paul H. Klingenstein  ("Klingenstein"),  Arthur C.
Patterson  ("Patterson"),  G. Carter Sednaoui  ("Sednaoui")  and James R. Swartz
("Swartz").  The foregoing entities and individuals are collectively referred to
as the "Reporting Persons."

ITEM 2(b).        ADDRESS OF PRINCIPAL BUSINESS OFFICE, OR, IF NONE, RESIDENCE:

                  The address of the principal  business  office for each of the
Reporting Persons is:

                  428 University Avenue
                  Palo Alto, CA  94301

ITEM 2(c)         CITIZENSHIP:

                  A IV, AKTSU,  AI95, A IV Assoc.  and SFP are Delaware  Limited
                  Partnerships,  AP&C is a Deleware S  Corporation,  and Breyer,
                  Evnin, Hill, Klingenstein,  Patterson, Sednaoui and Swartz are
                  United States citizens.

ITEM 2(d).        TITLE OF CLASS OF SECURITIES:

                  Common Stock

ITEM 2(e).        CUSIP NUMBER:

                  CUSIP # 44860K102

ITEM 3.           Not Applicable



<PAGE>


                                                                   Page 16 of 21

ITEM 4.           OWNERSHIP:

                  The following information with respect to the ownership of the
                  Common  Stock  of  the  issuer  by  the  persons  filing  this
                  Statement is provided as of December 31, 1997:

                     (a)   Amount beneficially owned:

                           See Row 9 of cover page for each Reporting Person.

                     (b)   Percent of Class:

                           See Row 11 of cover page for each Reporting Person.

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

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

                                       See  Row  5  of   cover   page  for  each
                                       Reporting Person.

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

                                       See  Row  6  of   cover   page  for  each
                                       Reporting Person.

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

                                       See  Row  7  of   cover   page  for  each
                                       Reporting Person.

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

                                       See  Row  8  of   cover   page  for  each
                                       Reporting Person.

<PAGE>


                                                                   Page 17 of 21

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:

                                    Under certain circumstances set forth in the
                  limited partnership agreements of A IV, A IV Assoc., AKTSU and
                  AI95,  the  general  and  limited  partners  of  each  of such
                  entities may be deemed to have the right to receive  dividends
                  from, or the proceeds  from,  the sale of shares of the issuer
                  owned by each such fund.


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

ITEM 9.           NOTICE OF DISSOLUTION OF GROUP:

                  Not applicable

ITEM 10.          CERTIFICATION:

                  Not applicable



<PAGE>


                                                                   Page 18 of 21



                                    SIGNATURE

                  After  reasonable  inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  statement is true,
complete and correct.

Dated:  February 13, 1998




Entities:
                Accel IV L.P.
                Accel Keiretsu L.P.
                Accel Investors '95 L.P.
                Accel IV Associates L.P.
                Accel Partners & Co. Inc.
                Swartz Family Partnership L.P.     By:   /s/ G. Carter Sednaoui
                                                         -----------------------
                                                             G. Carter Sednaoui,
                                                             Attorney-in-fact
                                                             for above-listed 
                                                             entities

Individuals:
                James W. Breyer
                Luke B. Evnin
                Eugene D. Hill, III
                Paul H. Klingenstein
                Arthur C. Patterson
                G. Carter Sednaoui
                James R. Swartz                    By:   /s/ G. Carter Sednaoui 
                                                         -----------------------
                                                             G. Carter Sednaoui,
                                                             Individually and as
                                                             Attorney-in-fact   
                                                             for above-listed   
                                                             entities           
<PAGE>                                             


                                                                   Page 19 of 21

                                  EXHIBIT INDEX



                                                                      Found on
                                                                   Sequentially
Exhibit                                                            Numbered Page

Exhibit A:  Agreement of Joint Filing                                   20

Exhibit B:  Reference to G. Carter Sednaoui as Attorney-in-Fact         21



<PAGE>


                                                                   Page 20 of 21

                                    EXHIBIT A

                            Agreement of Joint Filing

The  undersigned  hereby  agree  that a single  Schedule  13G (or any  amendment
thereto) relating to the Common Stock of Hybrid Networks, Inc. shall be filed on
behalf of each of the  undersigned  and that this Agreement shall be filed as an
exhibit to such Schedule 13G. Dated: February 13, 1998


Entities:
              Accel IV L.P.
              Accel Keiretsu L.P.
              Accel Investors '95 L.P.
              Accel IV Associates L.P.
              Accel Partners & Co. Inc.
              Swartz Family Partnership L.P.       By:   /s/ G. Carter Sednaoui 
                                                         -----------------------
                                                             G. Carter Sednaoui,
                                                             Attorney-in-fact   
Individuals:                                                 for above-listed   
              James W. Breyer                                entities           
              Luke B. Evnin                        
              Eugene D. Hill, III
              Paul H. Klingenstein
              Arthur C. Patterson
              G. Carter Sednaoui
              James R. Swartz                      By:   /s/ G. Carter Sednaoui 
                                                         -----------------------
                                                             G. Carter Sednaoui,
                                                             Individually and as
                                                             Attorney-in-fact   
                                                             for above-listed   
                                                             entities           
<PAGE>                                             


                                                                   Page 21 of 21

                                    EXHIBIT B

               REFERENCE TO G. CARTER SEDNAOUI AS ATTORNEY-IN-FACT



                  G.  Carter  Sednaoui  has signed  the  enclosed  documents  as
Attorney-In-Fact.  Note that copies of the  applicable  Power of  Attorneys  are
already on file with the appropriate agencies.




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