Exhibit 10.03

Third Amendment to
Adaptec, Inc. Savings and Retirement Plan

        THIS THIRD AMENDMENT to the Adaptec, Inc. Savings and Retirement Plan,
originally effective January 1, 1986 and most recently restated in its entirety
January 1, 1997, as amended (the "Plan"), is adopted effective as of March 28,
2005:

        The Plan is hereby amended as follows:

1.     Section 8.4(b) is amended to add the following sentence:

        "Effective for distributions on or after March 28, 2005, if a
Participant's vested Account balance at the time of distribution does not exceed
$1,000, the Participant's Account balance shall be distributed in a single lump
sum payment as soon as practicable after termination; such distribution may be
made without the Participant's consent."

Except as modified by this Amendment, all the terms and provisions of the Plan,
as previously amended, shall remain in full force and effect.

Executed this 1st day of February, 2005.

    ADAPTEC, INC. SAVINGS AND
RETIREMENT PLAN ADMINISTRATIVE
COMMITTEE
 
 
By:
 
/s/  KERSTIN AIELLO      

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

 
 
Title:
 
Benefits Manager

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

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