Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Ryland Kyle
   2. Issuer Name and Ticker or Trading Symbol
POWER ONE INC [PWER] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
2775 SAND HILL ROAD, SUITE 100		 3. Date of Earliest Transaction (Month/Day/Year)
07/25/2013
(Street)

MENLO PARK, CA 94025		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, par value $0.001 per share 07/25/2013   J   25,775,108 D $ 6.35 (1) 0 I See Footnote (2)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Series C Jr Convert Pref Stock, par value $0.001 per share $ 1.35 07/25/2013   J     24,713.6042 11/10/2011   (3) Common Stock, par value $0.001 per share 18,306,373 $ 4,703.7 (4) 0 I See Footnote (2)
Warrant (right to buy Common Stock) $ 1.33 07/25/2013   J     8,628,941 08/08/2010 05/08/2016 Common Stock, par value $0.001 per share 8,628,941 $ 5.02 (5) 0 I See Footnote (2)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Ryland Kyle
2775 SAND HILL ROAD, SUITE 100
MENLO PARK, CA 94025		   X      

Signatures

 /s/ Kyle T. Ryland   07/26/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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).
(1) Each share of common stock, par value $0.001 per share (the "Common Stock"), of Power-One, Inc. (the "Issuer") was disposed of upon consummation of the merger (the "Merger") contemplated by that certain Agreement and Plan of Merger by and among ABB Ltd, Verdi Acquisition Corporation ("Verdi"), and the Issuer, dated April 21, 2013 (the "Merger Agreement") for the right to receive $6.35 in cash without interest. Pursuant to the Merger Agreement, the Issuer merged with and into Verdi, with the Issuer continuing as the surviving entity and becoming a subsidiary of ABB Ltd.
(2) These securities are directly owned by Silver Lake Sumeru Fund, L.P. ("SLSF"). Silver Lake Technology Associates Sumeru, L.P. ("SLT LP") is the sole general partner of SLSF, and SLTA Sumeru (GP), L.L.C. ("SLTA") is the sole general partner of SLT LP. Mr. Ryland is a member of the investment committee of SLTA and has an indirect financial interest in SLSF; accordingly, Mr. Ryland may be deemed to have an indirect pecuniary interest in the securities owned by SLSF under Rule 16a-1(a)(2) promulgated under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). However, pursuant to Rule 16a-1(a)(4) promulgated under the Exchange Act, Mr. Ryland disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.
(3) The Series C Junior Convertible Preferred Stock, par value $0.001 per share, of the Issuer (the "Series C Preferred Stock") has no expiration date.
(4) Each share of Series C Preferred Stock was disposed of upon consummation of the Merger for the right to receive approximately $4,703.70 in cash per share without interest.
(5) This warrant was disposed of upon consummation of the Merger for the right to receive $43,317,283.82 in cash, representing the product of (i) the excess of $6.35 over the exercise price per share of such warrant and (ii) the number of shares of Common Stock underlying such warrant.

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