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EXHIBIT 3.8

CERTIFICATE OF AMENDMENT

OF


CERTIFICATE OF INCORPORATION


OF


QLOGIC CORPORATION


a Delaware Corporation


(Pursuant to Section 242 of the General
Corporation Law of the State of Delaware)


QLogic Corporation, a corporation organized and
existing under and by virtue of the General Corporation Law
of the State of Delaware (the Corporation), through
its duly authorized officer and by authority of its Board of
Directors, does hereby certify:

(1) In accordance with the provisions of
Section 242 of the General Corporation Law of the State of
Delaware, at a meeting of the Board of Directors of the
Corporation held on June 21, 2000, a resolution was duly
adopted setting forth a proposed amendment to the Certificate of
Incorporation of the Corporation, declaring said amendment to be
advisable and directing that said amendment be submitted to the
stockholders of the Corporation for consideration thereof at the
next annual meeting of the stockholders. The resolution setting
forth the proposed amendment is as follows:



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| | NOW, THEREFORE, BE IT RESOLVED, that the second
    sentence of the first paragraph of ARTICLE IV: Authorized
    Capital Stock, of this Corporations Certificate of
    Incorporation be amended and restated to read in its entirety as
    follows:



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| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | The amount of total authorized capital
    stock of the corporation is 501,000,000 shares, divided into
    500,000,000 shares of Common Stock, par value $0.001 per share,
    and 1,000,000 shares of Preferred Stock, par value $0.001 per
    share.

(2) That thereafter, pursuant to resolution of
its Board of Directors, in accordance with Section 242 of the
General Corporation Law of the State of Delaware, the
Corporations stockholders approved the foregoing amendment
by the necessary number of shares of capital stock of the
corporation, as required by statute and by the Certificate of
Incorporation, at the annual meeting of stockholders held
September 18, 2000, which was held upon notice in accordance
with Section 222 of the General Corporation Law of the State of
Delaware.

(3) That said amendment was duly adopted in
accordance with the provisions of Section 242 of the General
Corporation Law of the State of Delaware.

IN WITNESS WHEREOF, the Corporation has caused
this Certificate of Amendment of Certificate of Incorporation to
be signed by Thomas R. Anderson, its duly authorized officer,
this 28th day of September, 2000.



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| | ------------------
| | QLOGIC CORPORATION



| |                                                       
| | ------------------------------------------------------
| | By:               
            
/s/ Thomas R. Anderson

| |                                               
| | ----------------------------------------------
| |                                               
| | Thomas R. Anderson,                           
| | Vice President and Chief Financial
    Officer