EXHIBIT 10.27a

LETTER AMENDMENT AND WAIVER

Dated as of November 21, 2006

To the banks, financial institutions

      and other institutional lenders

      (collectively, the “Lenders”)

      parties to the Credit Agreement

      referred to below and to Citicorp

      USA, Inc., as administrative agent,

      (the “Agent”) for the Lenders

Ladies and Gentlemen:

We refer to the Five Year Credit Agreement dated as of May 11, 2005 (the “Credit
Agreement”) among Jabil Circuit, Inc. (the “Borrower”), the Agent and the other
parties thereto. Capitalized terms not otherwise defined in this Letter
Amendment and Waiver (this “Letter Amendment”) have the same meanings as
specified in the Credit Agreement.

1. Amendment to Credit Agreement. It is hereby agreed by you and us that
Section 5.02(d) of the Credit Agreement is, effective as of the date of this
Letter Amendment, hereby amended as follows:

(a) Subsection(v) is amended in full to read as follows:

(v) Debt incurred or assumed or acquired by Subsidiaries of the Company
organized under the laws of any country other than the United States of America
or a State thereof aggregating for all such Subsidiaries of not more than the
sum of $200,000,000 plus an amount, not to exceed $450,000,000, incurred by any
Taiwanese Subsidiary of the Company in connection with the acquisition of Taiwan
Green Point Enterprises Limited.

(b) Subsection (x) is amended by adding to the end thereof the word “and”.

(c) A new subsection (xi) is added immediately after Subsection (x) to read as
follows:

(xi) Debt of a Person at the time such Person is merged into or consolidated
with any Subsidiary of the Company or becomes a Subsidiary of the Company;
provided that such Debt was not created in contemplation of such merger,
consolidation or acquisition.

2. Waiver. We hereby request that you waive, subject to the provisions hereof,
solely for the period commencing on the date hereof through February 2, 2007
(the “Extended Delivery Date”), the requirements of Section 5.01(i)(i) and
(ii) of the Credit Agreement.

On the Extended Delivery Date, if the Borrower shall not have delivered the
information required to be delivered pursuant to Section 5.01(i)(i) and (ii) of
the Credit Agreement in respect of the fiscal quarter ended November 31, 2006
and the fiscal year ended August 31, 2006, respectively, the

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waiver contained herein shall terminate without any further action by the Agent
and the Lenders, it shall be an Event of Default under Section 6.01(c) and the
Agent and the Lenders shall have all of the rights and remedies afforded to them
under the Credit Agreement and the Notes with respect to any such Event of
Default, as though no waiver had been granted by them hereunder.

3. Effectiveness, Etc. This Letter Amendment shall become effective as of the
date first above written when, and only when, the Agent shall have received
counterparts of this Letter Amendment executed by the undersigned and the
Required Lenders or, as to any of the Lenders, advice satisfactory to the Agent
that such Lender has executed this Letter Amendment. This Letter Amendment is
subject to the provisions of Section 9.01 of the Credit Agreement.

On and after the effectiveness of this Letter Amendment, each reference in the
Credit Agreement to “this Agreement”, “hereunder”, “hereof” or words of like
import referring to the Credit Agreement, and each reference in the Notes to
“the Credit Agreement”, “thereunder”, “thereof” or words of like import
referring to the Credit Agreement, shall mean and be a reference to the Credit
Agreement, as amended by this Letter Amendment.

The Credit Agreement and the Notes, as specifically amended by this Letter
Amendment, are and shall continue to be in full force and effect and are hereby
in all respects ratified and confirmed. The execution, delivery and
effectiveness of this Letter Amendment shall not, except as expressly provided
herein, operate as a waiver of any right, power or remedy of any Lender or the
Agent under the Credit Agreement, nor constitute a waiver of any provision of
the Credit Agreement.

If you agree to the terms and provisions hereof, please evidence such agreement
by executing and returning at least two counterparts of this Letter Amendment to
Susan L. Hobart, Shearman & Sterling LLP, 599 Lexington Avenue, New York, New
York 10022.

This Letter Amendment may be executed in any number of counterparts and by
different parties hereto in separate counterparts, each of which when so
executed shall be deemed to be an original and all of which taken together shall
constitute one and the same agreement. Delivery of an executed counterpart of a
signature page to this Letter Amendment by telecopier shall be effective as
delivery of a manually executed counterpart of this Letter Amendment.

This Letter Amendment shall be governed by, and construed in accordance with,
the laws of the State of New York.

 

Very truly yours, JABIL CIRCUIT, INC. By  

Sergio Cadvid

Title:   Treasurer

 

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Agreed as of the date first above written:

 

CITICORP USA, INC., as Agent and as a Lender By  

/s/ Julio Ojea Quintana

Title:   Director

 

JPMORGAN CHASE BANK, N.A. By  

/s/ Brian McDougal

Title:   Vice President

 

ABN AMRO BANK N.V. By  

/s/Frances O’R. Logan

Title:   Managing Director By  

/s/ Chris Lo

Title:   Assistant Vice President

 

THE ROYAL BANK OF SCOTLAND PLC By  

/s/ Eddie Dec

Title:   Senior Vice President

 

SUNTRUST BANK By  

/s/ Andrew S. Lee

Title:   Vice President

 

BNP PARIBAS By  

/s/ Mathew Harvey

Title:   Managing Director By  

/s/ Stuart Darby

Title:   Vice President

 

ROYAL BANK OF CANADA By  

/s/ Suzanne Kaicher

Title:   Attorney-in-Fact

 

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BANK OF AMERICA, N.A.

By

 

/s/ Sugeet Manchanda Madan

Title:

 

Senior Vice President

 

MIZUHO CORPORATE BANK, LTD. By  

/s/ Bertram Tang

Title:   Senior Vice President & Team Leader

 

U.S. BANK, NATIONAL ASSOCIATION By  

/s/ Frances W. Josephic

Title:   Vice President

 

COMERICA BANK By  

/s/ Gerald R. Finney, Jr.

Title:   Vice President

 

CREDIT SUISSE, acting through its Cayman Islands Branch By  

/s/ Thomas R. Cantello

Title:   Vice President By  

/s/ Denise L. Alvarez

Title:   Associate

 

UBS LOAN FINANCE LLC By  

/s/ Richard L. Tavrow

Title:   Director By  

/s/ Irja R. Otsa

Title:   Associate Director

 

HSBC BANK USA, N.A. By  

/s/ Deborah Allen

Title:   Senior Vice President

 

WELLS FARGO BANK, N.A. By  

/s/ Kevin R. Leer

Title:   Vice President

 

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SUMITOMO MITSUI BANKING CORPORATION By  

/s/ Shigeru Tsuru

Title:   Joint General Manager

 

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