SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Steel Partners II Master Fund L.P. (Last) (First) (Middle) MORGAN STANLEY FUND SERVICES LTD CRICKET SQ FL2 BOUNDARY HALL HUTCHINS DR (Street) BOX 2681 GRAND CAYMAN KY1-1111 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 12/28/2007	3. Issuer Name and Ticker or Trading Symbol ADAPTEC INC [ ADPT ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, $.001 Par Value	18,159,884	I(1)(2)	By Steel Partners II, L.P.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* Steel Partners II Master Fund L.P. (Last) (First) (Middle) MORGAN STANLEY FUND SERVICES LTD CRICKET SQ FL2 BOUNDARY HALL HUTCHINS DR (Street) BOX 2681 GRAND CAYMAN KY1-1111 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Steel Partners LLC (Last) (First) (Middle) 590 MADISON AVENUE 32ND FLOOR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. This Form 3 is being filed due to a reorganization of Steel Partners II, L.P. ("Steel Partners II") and its affiliates, as a result of which Steel Partners II Master Fund L.P. ("Steel Master") and Steel Partners LLC ("Partners LLC") may now be deemed to beneficially own securities of the Issuer owned by Steel Partners II. The securities reported in this Form 3 are owned directly by Steel Partners II, and owned indirectly by Steel Master by virtue of it being the sole limited partner of Steel Partners II and by Partners LLC by virtue of it being the investment manager of Steel Partners II. The securities reported in this Form 3 continue to be owned indirectly by Steel Partners II GP LLC (formerly Steel Partners, L.L.C.) and Warren Lichtenstein, each of whom previously jointly filed with Steel Partners II Section 16 filings with respect to securities of the Issuer owned directly by Steel Partners II.

2. Steel Master and Partners LLC disclaim beneficial ownership of the securities owned by Steel Partners II except to the extent of their pecuniary interest therein.

Remarks:

	By: Steel Partners II Master Fund L.P., By: Steel Partners II GP LLC, General Partner, By: /s/ Lauren Isenman, as Attorney In Fact for Warren G. Lichtenstein, Managing Member	12/31/2007
	By: Steel Partners LLC, By: /s/ Lauren Isenman, as Attorney In Fact for Warren G. Lichtenstein, Manager	12/31/2007
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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