Adaptec 2011 Annual Report Download - page 131

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Exhibit 23.1
CONSENT OF DELOITTE & TOUCHE LLP, INDEPENDENT
REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 333-44204, 333-34648, 33-86930, 33-90392, 33-96620,
33-97490, and 333-132447) and on Form S-8 (Nos. 333-45118, 333-40508, 333-44212, 33-41027, 33-80988, 33-94790, 333-142980, 333-13387, 333-13359,
333-13357, 333-56244, 333-48110, 333-35276, 333-34622, 333-94999, 333-92885, 333-87039, 333-55983, 333-55991, 333-34671, 333-81414, 333-102747,
333-133830, 333-115123, 333-128427, 333-152966, 333-159174, 333-171321, 333-171295, and 333-165153) of our reports dated February 28, 2012 relating
to the consolidated financial statements and financial statement schedules of PMC-Sierra Inc., and the effectiveness of internal control over financial reporting
appearing in this Annual Report on Form 10-K of PMC-Sierra Inc. for the year ended December 31, 2011.
/s/ Deloitte & Touche LLP
Vancouver, Canada
February 28, 2012