SC 13D/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 14)1

Adaptec, Inc.

(Name of Issuer)

Common Stock, par value $0.001

(Title of Class of Securities)

00651F108

(CUSIP Number)

Warren G. Lichtenstein

Steel Partners II, L.P.

590 Madison Avenue, 32nd Floor

New York, New York 10022

(212) 520-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

September 4, 2009

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨.

Note:  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See § 240.13d-7 for other parties to whom copies are to be sent.

_______________

1              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).

CUSIP NO. 00651F108

1	NAME OF REPORTING PERSON STEEL PARTNERS II, L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS WC
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 13,160,669
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 13,160,669
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,160,669
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.0%
14	TYPE OF REPORTING PERSON PN

2

CUSIP NO. 00651F108

1	NAME OF REPORTING PERSON STEEL PARTNERS HOLDINGS L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 13,160,669
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 13,160,669
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,160,669
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.0%
14	TYPE OF REPORTING PERSON PN

3

CUSIP NO. 00651F108

1	NAME OF REPORTING PERSON STEEL PARTNERS LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 13,160,669
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 13,160,669
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,160,669
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.0%
14	TYPE OF REPORTING PERSON OO

4

CUSIP NO. 00651F108

1	NAME OF REPORTING PERSON STEEL PARTNERS II GP LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 13,160,669
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 13,160,669
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,160,669
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.0%
14	TYPE OF REPORTING PERSON OO

5

CUSIP NO. 00651F108

1	NAME OF REPORTING PERSON WARREN G. LICHTENSTEIN
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 13,160,669
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 13,160,669
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,160,669
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.0%
14	TYPE OF REPORTING PERSON IN

6

CUSIP NO. 00651F108

1	NAME OF REPORTING PERSON JACK L. HOWARD
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 18,750 *
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 18,750 *
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 18,750 *
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) LESS THAN 1%
14	TYPE OF REPORTING PERSON IN

* Represents 6,250 Shares underlying a Restricted Stock Award that vest within 60 days of the date hereof and 12,500 Shares underlying Non-Qualified Stock Options that are exercisable within 60 days of the date hereof.

7

CUSIP NO. 00651F108

1	NAME OF REPORTING PERSON JOHN J. QUICKE
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 18,750 *
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 18,750 *
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 18,750 *
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) LESS THAN 1%
14	TYPE OF REPORTING PERSON IN

* Represents 6,250 Shares underlying a Restricted Stock Award that vest within 60 days of the date hereof and 12,500 Shares underlying Non-Qualified Stock Options that are exercisable within 60 days of the date hereof.

8

CUSIP NO. 00651F108

The following constitutes Amendment No. 14 to the Schedule 13D filed by the undersigned (“Amendment No. 14”).  This Amendment No. 14 amends the Schedule 13D as specifically set forth.

Item 3. Source and Amount of Funds or Other Consideration.

Item 3 is hereby amended and restated to read as follows:

The aggregate purchase price of the 13,160,669 Shares owned by Steel Partners II is approximately $43,855,698, including brokerage commissions.  The Shares owned by Steel Partners II were acquired with partnership funds.

The Shares beneficially owned by Messrs. Howard and Quicke were awarded to them in their capacities as directors of the Issuer.

Steel Partners II effects purchases of securities primarily through margin accounts maintained for it with prime brokers, which may extend margin credit to it as and when required to open or carry positions in the margin accounts, subject to applicable federal margin regulations, stock exchange rules and the prime brokers’ credit policies.  In such instances, the positions held in the margin accounts are pledged as collateral security for the repayment of debit balances in the accounts.

Item 4. Purpose of Transaction

Item 4 is hereby amended to add the following:

On September 4, 2009, Steel Partners II filed with the Securities and Exchange Commission a preliminary consent solicitation statement (the “Consent Statement”) in connection with its anticipated solicitation of written consents from the stockholders of the Issuer to consent to the following actions without a stockholders’ meeting, as authorized by the Delaware General Corporation Law:

·   Repeal any provision of the Issuer’s Amended and Restated Bylaws (the “Bylaws”) in effect at the time this proposal becomes effective that was not included in the Bylaws that became effective on May 6, 2009 and were filed with the Securities and Exchange Commission on May 12, 2009;

·   Remove without cause Subramanian “Sundi” Sundaresh and Robert J. Loarie as directors of the Issuer and any other person or persons elected or appointed to the Board of Directors of the Issuer (the “Board”) prior to the effective date of this proposal; and

·   Amend Section 2.1 of the Bylaws as set forth on Schedule I to the Consent Statement of Steel Partners II, to fix the number of directors serving on the Board at seven (7).

Steel Partners II reserves the right to take any other actions it deems appropriate to protect its rights as a stockholder of the Issuer.

On September 4, 2009, Steel Partners II delivered a letter to the Issuer requesting to inspect a complete list of the Issuer’s stockholders and other corporate records as permitted by applicable state law (the “Stockholder List Demand Letter”).  The purpose of the Stockholder List Demand Letter is to enable Steel Partners II to communicate with the Issuer’s stockholders in connection with a consent solicitation Steel Partners II is preparing to undertake.

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CUSIP NO. 00651F108

On September 4, 2009, Jack L. Howard, in his capacity as a director of the Issuer, delivered a letter to the Issuer requesting to inspect certain books and records of the Issuer under applicable state law.  

Item 5. Interest in Securities of the Issuer.

Item 5(a) is hereby amended and restated to read as follows:

(a)           The aggregate percentage of Shares reported owned by each person named herein is based upon 119,981,983 Shares outstanding, which is the total number of Shares outstanding as of July 30, 2009 as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on August 5, 2009.

As of the close of business on September 8, 2009, Steel Partners II owned directly 13,160,669 Shares, constituting approximately 11.0% of the Shares outstanding.  By virtue of their relationships with Steel Partners II discussed in further detail in Item 2, each of Steel Holdings, Partners LLC, Steel Partners GP and Warren G. Lichtenstein may be deemed to beneficially own the Shares owned by Steel Partners II.

As of the close of business on September 8, 2009, Jack L. Howard beneficially owned 6,250 Shares underlying a Restricted Stock Award that vest within 60 days of the date hereof and beneficially owned an additional 9,375 Shares underlying Non-Qualified Stock Options that are exercisable within 60 days of the date hereof, constituting in the aggregate less than 1% of the Shares outstanding.  As of the close of business on September 8, 2009, John J. Quicke beneficially owned 6,250 Shares underlying a Restricted Stock Award that vest within 60 days of the date hereof and beneficially owned an additional 9,375 Shares underlying Non-Qualified Stock Options that are exercisable within 60 days of the date hereof, constituting in the aggregate less than 1% of the Shares outstanding.

Each Reporting Person, as a member of a “group” with the other Reporting Persons for purposes of Rule 13d-5(b)(1) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), may be deemed to beneficially own the Shares owned by the other Reporting Persons.

Item 5(c) is hereby amended to add the following:

(c)           Schedule A annexed hereto lists all transactions in the Shares by the Reporting Persons since the filing of Amendment No. 13 to the Schedule 13D.  All of such transactions were effected in the open market.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

Item 6 is hereby amended to add the following:

On September 9, 2009, the Reporting Persons entered into a Joint Filing and Solicitation Agreement in which, among other things, (a) the parties agreed to the joint filing on behalf of each of them of statements on Schedule 13D with respect to the securities of the Issuer, (b) the parties agreed to solicit proxies or written consents with respect to the Proposals and to take all other action necessary or advisable to achieve the foregoing (the “Solicitation”), and (c) Steel Partners II agreed to bear all expenses incurred in connection with the Reporting Persons’ activities, including approved expenses incurred by any of the parties in connection with the Solicitation, subject to certain limitations.  A copy of the Joint Filing and Solicitation Agreement is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

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CUSIP NO. 00651F108

On September 4, 2009, Steel Partners II entered into a Purchase Trading Plan Agreement (the “Agreement”) with Mutual Securities, Inc., a registered broker-dealer, for the purpose of establishing a trading plan to effect purchases of Shares of the Issuer in compliance with all applicable laws, including, without limitation, Section 10(b) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, including, but not limited to, Rule 10b5-1.  A copy of the Agreement is attached hereto as Exhibit 99.2 and is incorporated herein by reference.

Except as set forth herein, there are no contracts, arrangements, understandings or relationships among the Reporting Persons, or between the Reporting Persons and any other person, with respect to the securities of the Issuer.

Item 7. Material to be Filed as Exhibits.

Item 7 is hereby amended to add the following exhibit:

99.1   Joint Filing and Solicitation Agreement by and among Steel Partners II, L.P., Steel Partners Holdings L.P., Steel Partners LLC, Steel Partners II GP LLC, Warren G. Lichtenstein, Jack L. Howard and John J. Quicke, dated September 9, 2009.

99.2   Purchase Trading Plan Agreement by and between Steel Partners II, L.P. and Mutual Securities, Inc., dated September 4, 2009.

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CUSIP NO. 00651F108

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated:  September 9, 2009	STEEL PARTNERS II, L.P.
	By:		Steel Partners II GP LLC General Partner
	By:	/s/ Sanford Antignas
		Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Managing Member

STEEL PARTNERS HOLDINGS L.P.
By:		Steel Partners II GP LLC General Partner
By:	/s/ Sanford Antignas
	Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Managing Member

STEEL PARTNERS LLC
By:	/s/ Sanford Antignas
	Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Manager

STEEL PARTNERS II GP LLC
By:	/s/ Sanford Antignas
	Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Managing Member

/s/ Sanford Antignas

SANFORD ANTIGNAS

as Attorney-In-Fact for Warren G. Lichtenstein

12

CUSIP NO. 00651F108

/s/ Jack L. Howard

JACK L. HOWARD

/s/ John J. Quicke

JOHN J. QUICKE

13

CUSIP NO. 00651F108

SCHEDULE A

Transactions in the Shares Since the Filing of Amendment No. 13 to the Schedule 13D

Class of Security Securities Purchased Price ($) Date of Purchase

STEEL PARTNERS II, L.P.

Common Stock	56,713	2.8164	08/06/09
Common Stock	200,000	2.8150	08/06/09
Common Stock	130,000	2.8148	08/06/09
Common Stock	100,000	2.8500	08/07/09
Common Stock	30,100	2.8434	08/10/09
Common Stock	50,000	2.8700	08/11/09
Common Stock	13,750	2.8500	08/11/09
Common Stock	477,100	3.0299	09/08/09
Common Stock	400,000	3.0350	09/08/09
Common Stock	100,000	3.0300	09/08/09

STEEL PARTNERS HOLDINGS L.P.

None

STEEL PARTNERS LLC

None

STEEL PARTNERS II GP LLC

None

WARREN G. LICHTENSTEIN

None

JACK L. HOWARD

None

JOHN J. QUICKE

None

14

EX-99.1

Exhibit 99.1

JOINT FILING AND SOLICITATION AGREEMENT

WHEREAS, certain of the undersigned are stockholders, direct or beneficial, of Adaptec, Inc., a Delaware corporation (“Adaptec”);

WHEREAS, Steel Partners II, L.P., a Delaware limited partnership (“Steel Partners II”), Steel Partners Holdings L.P., a Delaware limited partnership (“Steel Holdings”), Steel Partners LLC, a Delaware limited liability company (“Partners LLC”), Steel Partners II GP LLC, a Delaware limited liability company (“Steel Partners GP”), Warren G. Lichtenstein, Jack L. Howard and John J. Quicke wish to form a group for the purpose of soliciting proxies or written consents to remove two directors from the Board of Directors of Adaptec (the “Board”) without cause and any person elected or appointed to the Board to fill any vacancy on the Board or any newly-created directorships prior to the effectiveness of the such proposal (the “Removal Proposal”) and for the purpose of taking all other action necessary to achieve the foregoing.

NOW, IT IS AGREED, this 9th day of September 2009 by the parties hereto:

1.           In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, each of the undersigned (collectively, the “Group”) agrees to the joint filing on behalf of each of them of statements on Schedule 13D with respect to the securities of Adaptec.  Each member of the Group shall be responsible for the accuracy and completeness of his/its own disclosure therein, and is not responsible for the accuracy and completeness of the information concerning the other members, unless such member knows or has reason to know that such information is inaccurate.

2.           So long as this agreement is in effect, each of the undersigned shall provide written notice to Olshan Grundman Frome Rosenzweig & Wolosky LLP (“Olshan”) of (i) any of their purchases or sales of securities of Adaptec; or (ii) any securities of Adaptec over which they acquire or dispose of beneficial ownership.  Notice shall be given no later than 24 hours after each such transaction.

3.           Each of the undersigned agrees to solicit written consents or proxies to remove two directors from the Board pursuant to the Removal Proposal and to take all other action necessary or advisable to achieve the foregoing (the “Solicitation”).

4.           Steel agrees to bear all expenses incurred in connection with the Group’s activities, including expenses incurred by any of the parties in the Solicitation.  Notwithstanding  the foregoing, Steel shall not be required to reimburse any party for (i) out-of-pocket expenses  incurred by a party in the aggregate in excess of $250 without Steel’s prior written approval; (ii) the value of the time of any party; (iii) legal fees incurred without Steel’s prior written approval;  or (iv) the costs of any counsel, other than Olshan, employed in connection with any pending or  threatened litigation without Steel’s prior written approval.

5.           The relationship of the parties hereto shall be limited to carrying on the business of the Group in accordance with the terms of this Agreement.  Such relationship shall be construed and deemed to be for the sole and limited purpose of carrying on such business as described herein.  Nothing herein shall be construed to authorize any party to act as an agent for any other party, or to create a joint venture or partnership, or to constitute an indemnification.  Nothing herein shall restrict any party’s right to purchase or sell securities of Adaptec, as he/it deems appropriate, in his/its sole discretion, provided that all such sales are made in compliance with all applicable securities laws.

6.           This Agreement may be executed in counterparts, each of which shall be deemed an original and all of which, taken together, shall constitute one and the same instrument, which may be sufficiently evidenced by one counterpart.

7.           In the event of any dispute arising out of the provisions of this Agreement, the parties hereto consent and submit to the exclusive jurisdiction of the Federal and State Courts in the State of New York.

8.           Any party hereto may terminate his obligations under this Agreement at any time on 24 hours’ written notice to all other parties, with a copy by fax to Steven Wolosky at Olshan, Fax No. (212) 451-2222.

9.           Each party acknowledges that Olshan shall act as counsel for both the Group and Steel.

2

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed as of the day and year first above written.

STEEL PARTNERS II, L.P.
By:		Steel Partners II GP LLC General Partner
By:	/s/ Sanford Antignas
	Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Managing Member

STEEL PARTNERS HOLDINGS L.P.
By:		Steel Partners II GP LLC General Partner
By:	/s/ Sanford Antignas
	Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Managing Member

STEEL PARTNERS LLC
By:	/s/ Sanford Antignas
	Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Manager

STEEL PARTNERS II GP LLC
By:	/s/ Sanford Antignas
	Sanford Antignas as Attorney-In-Fact for Warren G. Lichtenstein, Managing Member

/s/ Sanford Antignas

SANFORD ANTIGNAS

as Attorney-In-Fact for Warren G. Lichtenstein

/s/ Jack L. Howard

JACK L. HOWARD

/s/ John J. Quicke

JOHN J. QUICKE

EX-99.2

Exhibit 99.2

PURCHASE TRADING PLAN AGREEMENT

WHEREAS, Steel Partners II, L.P., a Delaware limited partnership (the “Purchaser”) desires to purchase, from time to time, certain shares (the “Shares”) of Common Stock, par value $.001 per share (the “Common Stock”), of Adaptec, Inc., a Delaware corporation (the “Company”).

WHEREAS, Jack Howard and John Quicke, each an employee of an affiliate of the Purchaser, are directors of the Company, and therefore, although on the date hereof they are not in possession of material nonpublic information about the Company, they may become aware of material nonpublic information about the Company in the future.

WHEREAS, the Purchaser desires to enter into this agreement for the purpose of establishing a trading plan to make purchases of Shares in compliance with all applicable laws, including, but not limited to, Section 10(b) of the Securities Exchange Act of 1934, as amended (the “1934 Act”), and the rules and regulations promulgated thereunder, including, but not limited to, Rule 10b5-1.  References herein to this “Agreement” refer to this agreement and specifically include the trading plan described herein.

NOW, IT IS AGREED, as of this 4th day of September, 2009 by the Purchaser and Mutual Securities, Inc. (the “Broker”) as follows:

Section 1.                      Terms of Purchase.

(a) The Purchaser desires that the Broker effect purchases of the Shares on its behalf in accordance with trading requirements adopted by the Purchaser and to be delivered in writing to the Broker by separate letter (the “Initial Trading Instructions”).  The Initial Trading Instructions shall take effect no earlier than ten (10) days following the date hereof.

(b) In furtherance of Section 1(a) hereof, the Purchaser directs the Broker to purchase, in customary brokerage transactions, the Shares, for the Purchaser's account or accounts, in the Broker's sole discretion as to execution and timing, subject to the condition that as of the time of any purchase of Shares, any individual employee of the Broker making the Broker's investment decisions on behalf of the Purchaser shall not be in possession of or aware of material nonpublic information relating to the Company's business, operations or prospects or the value of the Common Stock (“Material Nonpublic Information”).

(c) Notwithstanding the foregoing, the Broker shall not purchase Shares at any time when the Broker, in its sole discretion, shall have determined that such purchase would violate applicable law, including, without limitation, Section 10(b) of the 1934 Act and the rules and regulations promulgated thereunder and Section 5 of the Securities Act of 1933, as amended (the “1933 Act”).

(d) The Purchaser agrees that, during the term of this Agreement, it shall not exercise any subsequent influence over how, when or whether to effect purchases of the Shares, except that the Purchaser may amend this Agreement as set forth in Section 3 hereof.  Each of the Purchaser and the Broker agrees that it will not discuss with the other the Company's business, operations or prospects or any other information likely to be related to the value of the Shares or likely to influence a decision to purchase the Shares.  Notwithstanding the preceding sentence, with the approval of counsel to the Broker, the Purchaser may communicate with Broker personnel who are not responsible for, and have no ability to influence, the execution of the trading plan set forth in this Agreement.

Section 2.                      Representations, Warranties and Covenants.

(a) The Purchaser represents, warrants and covenants to the Broker as follows:

(i) The Purchaser is not, as of the date hereof, aware of or in possession of Material Nonpublic Information.

(ii) During the term of this Agreement, the Purchaser will not engage, and will not cause others to engage on behalf of the Purchaser, in any transactions (other than (x) purchases of Shares pursuant to this Agreement, or (y) exercises of stock options issued pursuant to the Company's stock option plans; provided that the Purchaser complies with Rule 16b-3 under the 1934 Act in connection with any such exercise and the related securities)involving any security into which the Common Stock is convertible or any other related security or derivative, including, without limitation, corresponding or hedging transactions with respect to the Common Stock.  The Purchaser also agrees not to enter into any binding contract with respect to any transactions described in the preceding sentence.

(iii) The Purchaser will at all times, in connection with the performance of this Agreement, comply with all applicable laws, including, without limitation, Section 16 of the 1934 Act and the rules and regulations promulgated thereunder.

(iv) The Purchaser agrees to provide such additional information and to execute such additional documents or instruments as may be reasonably requested by the Company or the Broker in connection with the performance of this Agreement and to confirm compliance with applicable law.

(v) The Company has approved the form of this Agreement.

(vi) This Agreement constitutes the legal, valid and binding obligation of the Purchaser enforceable against the Purchaser in accordance with its terms, except as the enforceability thereof may be limited by applicable bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium and other laws affecting the enforceability of creditors' rights and general principles of equity, and as rights to indemnity hereunder may be limited by applicable law.  The Shares are not subject to any liens, security interests or other impediments to transfer, nor is there any litigation, arbitration or other proceeding pending, or to the Purchaser's knowledge threatened, that would prevent or interfere with the purchase of the Shares under this Agreement.

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(b) The Broker represents, warrants and covenants to the Purchaser as follows:

(i) The Broker has implemented reasonable policies and procedures, taking into consideration the nature of the Broker's business, to ensure that individuals making investment decisions will not violate the laws prohibiting trading on the basis of Material Nonpublic Information.  These policies and procedures include those that restrict any purchase or sale, or cause any purchase or sale, of any security as to which the Broker has Material Nonpublic Information, as well as those that prevent such individuals from becoming aware of or in possession of such Material Nonpublic Information.

(ii) In connection with all purchases of Shares, the Broker shall deliver to the Purchaser by facsimile or electronic mail, no later than the close of business on the date such transaction is effected, all information necessary (to the extent that the Broker possesses such information) for the Purchaser to make all required Form 4 and 5 filings, as required by Section 16(a) of the 1934 Act with regard to purchases made pursuant to this Agreement.

(iii) This Agreement constitutes the legal, valid and binding obligation of the Broker enforceable against the Broker in accordance with its terms, except as the enforceability thereof may be limited by applicable bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium and other laws affecting the enforceability of creditors' rights and general principles of equity, and as rights to indemnity hereunder may be limited by applicable law.

Section 3.                      Amendments.  This Agreement (including the Initial Trading Instructions) may not be amended by the parties hereto, except as follows: The parties hereto may amend the provisions of this Agreement (including the Initial Trading Instructions) upon notice to the Company; provided that at the time of such amendment, the Purchaser was not in possession of or aware of Material Nonpublic Information and only upon the written consent of the Company's General Counsel (or his/her designee).  Any modification by the Purchaser will be made in good faith and not as part of a scheme to evade the prohibitions of Rule 10b5-1. The amended Agreement or amended Initial Trading Instructions, as the case may be, shall not take effect until thirty (30) days after the amendment is adopted.  During the thirty (30) day period between the adoption date of the amendment and the effective date of the amendment, the unmodified Agreement or Initial Trading Instructions, as the case may be, will remain in effect.

Section 4.                      Termination.  This Agreement shall terminate upon the earlier to occur of the following:

(a) The close of business on January 1, 2010; or

(b) The Broker purchases the maximum number of Shares allowable under the Initial Trading Instructions, as may be amended as provided in Section 3 hereof; or

(c) The Agreement is terminated by either party immediately upon receipt of written notice to the other party; provided, however, that with respect to any termination by the Purchaser pursuant to this Section 4(c) at the time of such termination, such termination was made in good faith and not as part of a scheme to evade the prohibitions of Rule 10b5-1; or

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(d) Any purchase effected pursuant to this Agreement that violates (or in the opinion of counsel to the Company or the Broker is likely to violate) Section 16 of the 1934 Act, any other provision of the Federal securities laws or regulations adopted by the U.S. Securities and Exchange Commission thereunder, or any other applicable Federal or State law or regulation; or

(e) The Purchaser materially breaches its obligations under this Agreement; or

(f) The Purchaser and/or the Company enter into a contract that prevents or materially restricts purchases by the Purchaser under this Agreement.

If the Agreement is terminated pursuant to Sections 4(c), (d), (e) or (f) and a new purchase trading plan agreement with respect to purchases of the Common Stock is entered into with the Broker or any other person, the Purchaser hereby agrees that the new purchase trading plan will not take effect until thirty (30)days after the termination of this Agreement.

Section 5.                      Indemnification and Limitation on Liability; No Tax, Accounting or Legal Advice.

(a) The Purchaser agrees to indemnify and hold harmless the Broker (and its directors, officers, employees and affiliates) from and against all claims, liabilities, losses, damages and expenses (including reasonable attorneys' fees and costs) arising out of or attributable to:  (i) any material breach by the Purchaser of this Agreement (including the Purchaser's representations and warranties), (ii) any violation by the Purchaser of applicable laws or regulations and (iii) any action taken by the Broker in good faith and without negligence pursuant to this Agreement.  This indemnification will survive the termination of this Agreement.

(b) Notwithstanding any other provision herein, the Broker will not be liable to the Purchaser for:  (i) special, indirect, punitive, exemplary, or consequential damages, or incidental losses or damages of any kind, including but not limited to lost profits, lost savings, and loss of use of facility or equipment, regardless of whether arising from breach of contract, warranty, tort, strict liability or otherwise, and even if advised of the possibility of such losses or damages or if such losses or damages could have been reasonably foreseen, or (ii) any failure to perform or for any delay in performance that results from a cause or circumstance that is beyond its reasonable control, including but not limited to failure of electronic or mechanical equipment, strikes, failure of common carrier or utility systems, severe weather, market disruptions or other causes commonly known as “acts of God.”

(c) The Purchaser acknowledges and agrees that the Broker has not provided the Purchaser with any tax, accounting or legal advice with respect to this Agreement.

Section 6.                      Governing Law. This Agreement (including the Initial Trading Instructions) will be governed by, and construed in accordance with, the laws of the State of New York,without regard to such State's conflict of laws rules.

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Section 7.                      Entire Agreement.  This Agreement (including the Initial Trading Instructions) constitutes the entire agreement between the parties hereto with respect to the subject matter hereof, and supersedes any previous or contemporaneous agreements, understandings, proposals or promises with respect thereto, whether written or oral.

Section 8.                      Assignment.  This Agreement and each party's rights and obligations hereunder may not be assigned or delegated without the written permission of the other party and shall inure to the benefit of each party's successors and permitted assigns, whether by merger, consolidation or otherwise.

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IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed and delivered as of the date first above written.

STEEL PARTNERS  II, L.P.
By:	STEEL PARTNERS II GP LLC
	its General Partner
By:	/s/ Sanford Antignas
Name:	Sanford Antignas
Title:	Chief Operating Officer
MUTUAL SECURITIES, INC.
By:	/s/ Mitchell C. Voss
Name:	Mitchell C. Voss
Title:	President

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