Vitesse Semiconductor (VTSS) SC 13D/A VITESSE SEMICONDUCTOR / Raging Capital Management ownership change

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. 6)1

Vitesse Semiconductor Corporation

(Name of Issuer)

Common Stock, $0.01 par value

(Title of Class of Securities)

928497 30 4

(CUSIP Number)

STEVE WOLOSKY, ESQ.

OLSHAN FROME WOLOSKY LLP

Park Avenue Tower

65 East 55th Street

New York, New York 10022

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

January 15, 2013

(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 x.

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. 928497 30 4

1	NAME OF REPORTING PERSON Raging Capital Master Fund, Ltd.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) x   (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 CAYMAN ISLANDS
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 6,491,127*
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 6,491,127*
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,491,127*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 17.6%*
14	TYPE OF REPORTING PERSON CO

* Does not include shares of Common Stock underlying 8.00% Convertible Second Lien Debentures due 2014.  See Item 5.

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CUSIP NO. 928497 30 4

1	NAME OF REPORTING PERSON Raging Capital Management, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) x   (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 6,491,127*
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 6,491,127*
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,491,127*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 17.6%*
14	TYPE OF REPORTING PERSON OO

* Does not include shares of Common Stock underlying 8.00% Convertible Second Lien Debentures due 2014.  See Item 5.

3

CUSIP NO. 928497 30 4

1	NAME OF REPORTING PERSON William C. Martin
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) x   (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 6,491,127*
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 6,491,127*
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,491,127*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 17.6%*
14	TYPE OF REPORTING PERSON IN

* Does not include shares of Common Stock underlying 8.00% Convertible Second Lien Debentures due 2014.  See Item 5.

4

CUSIP NO. 928497 30 4

1	NAME OF REPORTING PERSON Paul K. McWilliams
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) x   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS PF
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 3,656
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 3,656
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,656
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

5

CUSIP NO. 928497 30 4

1	NAME OF REPORTING PERSON Kenneth H. Traub
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) x   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS
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 - 0 -
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON - 0 -
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
14	TYPE OF REPORTING PERSON IN

6

CUSIP NO. 928497 30 4

The following constitutes Amendment No. 6 to the Schedule 13D filed by the undersigned (“Amendment No. 6”).  This Amendment No. 6 amends the Schedule 13D as specifically set forth herein.

Item 2. Identity and Background.

Item 2 is hereby amended to add the following:

As discussed below, Raging Capital has withdrawn its letter to the Issuer, dated November 20, 2012, nominating Paul K. McWilliams and Kenneth H. Traub for election to the Board of Directors of the Issuer (the “Board”) at the Issuer’s 2013 annual meeting of stockholders (the “Annual Meeting”).  Accordingly, Messrs. McWilliams and Traub are no longer members of a Section 13(d) group with the other Reporting Persons and shall cease to be Reporting Persons immediately after the filing of this Amendment No. 6.  The remaining Reporting Persons will continue filing as a group statements on Schedule 13D with respect to their beneficial ownership of securities of the Issuer to the extent required by applicable law.

Item 4. Purpose of Transaction.

Item 4 is hereby amended to add the following:

On January 15, 2013, the Issuer filed with the Securities and Exchange Commission its proxy statement with respect to the Annual Meeting identifying Kenneth H. Traub as a member of management’s slate of director candidates up for election at the Annual Meeting.  As a result, Raging Capital has withdrawn its letter to the Issuer, dated November 20, 2012, nominating Kenneth H. Traub and Paul K. McWilliams for election to the Board at the Annual Meeting.

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 36,869,855 Shares outstanding as of January 11, 2013, which is the total number of Shares outstanding as reported in the Issuer’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on January 15, 2013.

As of the close of business on January 16, 2013, Raging Master directly owned 6,491,127 Shares, constituting approximately 17.6% of the Shares outstanding.  By virtue of their relationships with Raging Master discussed in further detail in Item 2, each of Raging Capital and William C. Martin may be deemed to beneficially own the Shares directly owned by Raging Master.

As of the close of business on January 16, 2013, Raging Master directly owned an aggregate of $6,492,000 principal amount of the Debentures.  Such Debentures are convertible into an aggregate of 1,442,666 Shares, provided, however, that a holder of Debentures will only be entitled to exercise its conversion rights to the extent (and only to the extent) that the receipt of Shares upon exercise of the conversion right would not cause such holder (including its affiliates) to become, directly or indirectly, a “beneficial owner” (within the meaning of Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder) of more than 9.99% of the Shares outstanding at such time.  Raging Master currently directly owns in excess of 9.99% of the Shares outstanding.

7

CUSIP NO. 928497 30 4

As of the close of business on January 16, 2013, Paul K. McWilliams owned 3,656 Shares, constituting less than 1% of the Shares outstanding.

As of the close of business on January 16, 2013, Kenneth H. Traub did not own any Shares.

The filing of this Schedule 13D shall not be deemed an admission that Raging Master, Raging Capital and Mr. Martin are, for purposes of Section 13(d) of the Exchange Act, the beneficial owners of any securities of the Issuer he or it does not directly own.  Each of Raging Master, Raging Capital and Mr. Martin specifically disclaims beneficial ownership of the securities of the Issuer reported herein that he or it does not directly own.

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

Item 6 is hereby amended to add the following:

The Reporting Persons have terminated the Joint Filing and Solicitation Agreement dated November 20, 2012.

On January 17, 2013, Raging Master, Raging Capital and Mr. Martin entered into a Joint Filing Agreement in which they agreed to the joint filing on behalf of each of them of statements on Schedule 13D with respect to the securities of the Issuer.  A copy of this agreement is attached as an exhibit hereto and is incorporated herein by reference.

Other than as described 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 Agreement by and among Raging Capital Master Fund, Ltd., Raging Capital Management, LLC and William C. Martin, dated January 17, 2013.

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CUSIP NO. 928497 30 4

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:  January 17, 2013	Raging Capital Master Fund, Ltd.
	By:	Raging Capital Management, LLC Investment Manager
	By:	/s/ Frederick C. Wasch
		Name:	Frederick C. Wasch
		Title:	Chief Financial Officer

Raging Capital Management, LLC
By:	/s/ Frederick C. Wasch
	Name:	Frederick C. Wasch
	Title:	Chief Financial Officer

/s/ Frederick C. Wasch

Frederick C. Wasch as attorney-in-fact for William C. Martin

/s/ Paul K. McWilliams

Paul K. McWilliams

/s/ Kenneth H. Traub

Kenneth H. Traub

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