0000950137-08-002853 Sample Contracts

MORGAN STANLEY & CO. INCORPORATED 1585 BROADWAY NEW YORK, NY 10036-8293 (212) 761-4000

Fixed Dollar Collared Accelerated Share Repurchase Transaction • February 27th, 2008 • Plexus Corp • Printed circuit boards

• Contract Type
  Fixed Dollar Collared Accelerated Share Repurchase Transaction
• Filed
  February 27th, 2008
• Company
  Plexus Corp
• Industry
  Printed circuit boards

The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the Transaction entered into between Morgan Stanley & Co. Incorporated (“MSCO”) and Plexus Corp. (the “Issuer”) on the Trade Date specified below (the “Transaction”). This confirmation constitutes a “Confirmation” as referred to in the ISDA Master Agreement specified below.

MORGAN STANLEY & CO. INCORPORATED 1585 BROADWAY NEW YORK, NY 10036-8293 (212) 761-4000

Fixed Dollar Accelerated Share Repurchase Transaction • February 27th, 2008 • Plexus Corp • Printed circuit boards

• Contract Type
  Fixed Dollar Accelerated Share Repurchase Transaction
• Filed
  February 27th, 2008
• Company
  Plexus Corp
• Industry
  Printed circuit boards

The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the Transaction entered into between Morgan Stanley & Co. Incorporated (“MSCO”) and Plexus Corp. (the “Issuer”) on the Trade Date specified below (the “Transaction”). This confirmation constitutes a “Confirmation” as referred to in the ISDA Master Agreement specified below.