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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-Q/A

(Mark One)

   X     Quarterly report pursuant to Section 13 or 15(d) of the Securities
  ---    Exchange Act of 1934

For the quarterly period ended December 29, 1995 or

         Transition report pursuant to Section 13 or 15(d) of the Securities
  ---    Exchange Act of 1934

For the transition period from ______ to _______

Commission file number 0-15071

                                  ADAPTEC, INC.
             (Exact name of registrant as specified in its charter)

            CALIFORNIA                              94-2748530  
            (State of Incorporation)            (I.R.S. Employer
                                                Identification No.)

           691 S. MILPITAS BLVD., MILPITAS, CALIFORNIA        95035 
            (Address of principal executive offices)        (Zip Code)

     Registrant's telephone number, including area code   (408) 945-8600

                                       N/A
            (Former name, former address and former fiscal year, if
            changed since last report)

      Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

                      Yes  X       No 
                          ---         ---
      The number of shares outstanding of common stock as of January 19, 1996
was 52,562,638.

This document consists of 4 pages, excluding exhibits, of which this is page 1.

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                                TABLE OF CONTENTS


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Part II. Other Information

         Item 6.  Exhibits and Reports on Form 8-K                                                               3


Signatures                                                                                                       4
    




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Part II.             OTHER INFORMATION

Item 6.              Exhibits and Reports on Form 8-K


                     EXHIBIT
                     NUMBER               DESCRIPTION
                     -------              -----------
                                    
                     10.1*                Option Agreement I Between Adaptec Manufacturing
                                          (S)Pte. Ltd. and Taiwan Semiconductor Manufacturing
                                          Co., Ltd. dated October 23, 1995

                     10.2*                Option Agreement II Between Adaptec Manufacturing
                                          (S)Pte. Ltd. and Taiwan Semiconductor Manufacturing
                                          Co., Ltd. dated October 23, 1995

                     27**                 Financial Data Schedule



             *The Company has requested confidential treatment for portions of
              these agreements.

            **Previously filed.
  
              No Reports on Form 8-K were filed during the quarter.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                       ADAPTEC, INC.
                                       -----------------------------------------
                                       Registrant

                                       \s\PAUL G. HANSEN
                                       -----------------------------------------
                                       Paul G. Hansen, Vice-President, Finance
                                       and Chief Financial Officer
                                       (Principal Financial Officer),
                                       Assistant Secretary

Date:  November 5, 1996

                                       \s\ANDREW J. BROWN
                                       -----------------------------------------
                                       Andrew J. Brown, Corporate Controller
                                       (Principal Accounting Officer)

Date:  November 5, 1996

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