Unisphere Networks and Plexus Form Strategic Manufacturing Partnership

Outsourced Product Realization Services Facilitate Networking Company's

Ability to Keep Pace with Increased Demand for IP Solutions



Apr 25, 2001, 01:00 ET from Plexus Corp.

    NEENAH, Wis., April 25 /PRNewswire/ -- Plexus Corp. (Nasdaq:   PLXS)
 announced today that they have entered into a strategic manufacturing
 relationship with Unisphere Networks, Inc.  Plexus is a leading provider of
 product development, design, manufacturing and testing services to the
 electronics industry.  Unisphere is a leading provider of IP infrastructure
 that enables broadband data and voice services.  The companies have agreed
 that Unisphere will employ the global power of Plexus' worldwide
 manufacturing, testing, fulfillment and sustaining services.
     "Increased customer demand for our IP data product lines is driving our
 need to scale manufacturing operations," explained Carl Simone, Unisphere
 Networks' vice president of manufacturing operations.  "We selected Plexus for
 their manufacturing and technical expertise.  They will play a valuable role
 in supporting our growth."
     "We are very pleased Unisphere has selected Plexus as one of its strategic
 manufacturing partners," said John Nussbaum, president and chief executive
 officer of Plexus Corp.  "We look forward to growing our relationship with
 this key customer."
 
     About Unisphere Networks
     Unisphere Networks, Inc, is a provider of data and voice platforms for
 service providers.  Unisphere's edge routing switch, service mediation switch,
 and network and service management solutions help service providers create and
 deliver innovative IP solutions.  Unisphere Networks also offers service
 providers technical expertise and professional services in order to deploy and
 maintain next-generation networking solutions.  For more information, please
 visit Unisphere Networks at http://www.unispherenetworks.com .
 
     About Plexus
     Headquartered in Neenah, Wis., Plexus provides product realization
 services to original equipment manufacturers (OEMs) in the networking/datacom,
 medical, industrial and computer industries.  Plexus offers engineering and
 product development, New Product Introduction (NPI), prototyping, material
 procurement and management, assembly, testing, manufacturing, final system box
 build, fulfillment and sustaining services.  Further information about Plexus
 can be found on its website at http://www.plexus.com .
 
     Safe Harbor
     The statements contained in this release which are not historical facts
 (such as statements in the future tense and statements including "believe,"
 "expect,"  "intend," "anticipate" and similar concepts) are forwarding-looking
 statements that involve risks and uncertainties, including, but not limited to
 material cost fluctuations and the adequate availability of components and
 related parts for production, the effect of start-up costs of new programs,
 the effect of economic conditions, the success of products utilizing the
 technology in the marketplace, the costs associated with research and
 development, and other risks detailed in the Companies' Securities and
 Exchange Commission filings.
 
     CONTACT: Public Relations, Lara Willard of Unisphere Networks,
 978-589-0130, or lwillard@unispherenetworks.com , or Corporate Marketing, Mary
 Beth Daun of Plexus Corp., 920-751-3555, or MaryBeth.Daun@plexus.com
 
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SOURCE Plexus Corp.
    NEENAH, Wis., April 25 /PRNewswire/ -- Plexus Corp. (Nasdaq:   PLXS)
 announced today that they have entered into a strategic manufacturing
 relationship with Unisphere Networks, Inc.  Plexus is a leading provider of
 product development, design, manufacturing and testing services to the
 electronics industry.  Unisphere is a leading provider of IP infrastructure
 that enables broadband data and voice services.  The companies have agreed
 that Unisphere will employ the global power of Plexus' worldwide
 manufacturing, testing, fulfillment and sustaining services.
     "Increased customer demand for our IP data product lines is driving our
 need to scale manufacturing operations," explained Carl Simone, Unisphere
 Networks' vice president of manufacturing operations.  "We selected Plexus for
 their manufacturing and technical expertise.  They will play a valuable role
 in supporting our growth."
     "We are very pleased Unisphere has selected Plexus as one of its strategic
 manufacturing partners," said John Nussbaum, president and chief executive
 officer of Plexus Corp.  "We look forward to growing our relationship with
 this key customer."
 
     About Unisphere Networks
     Unisphere Networks, Inc, is a provider of data and voice platforms for
 service providers.  Unisphere's edge routing switch, service mediation switch,
 and network and service management solutions help service providers create and
 deliver innovative IP solutions.  Unisphere Networks also offers service
 providers technical expertise and professional services in order to deploy and
 maintain next-generation networking solutions.  For more information, please
 visit Unisphere Networks at http://www.unispherenetworks.com .
 
     About Plexus
     Headquartered in Neenah, Wis., Plexus provides product realization
 services to original equipment manufacturers (OEMs) in the networking/datacom,
 medical, industrial and computer industries.  Plexus offers engineering and
 product development, New Product Introduction (NPI), prototyping, material
 procurement and management, assembly, testing, manufacturing, final system box
 build, fulfillment and sustaining services.  Further information about Plexus
 can be found on its website at http://www.plexus.com .
 
     Safe Harbor
     The statements contained in this release which are not historical facts
 (such as statements in the future tense and statements including "believe,"
 "expect,"  "intend," "anticipate" and similar concepts) are forwarding-looking
 statements that involve risks and uncertainties, including, but not limited to
 material cost fluctuations and the adequate availability of components and
 related parts for production, the effect of start-up costs of new programs,
 the effect of economic conditions, the success of products utilizing the
 technology in the marketplace, the costs associated with research and
 development, and other risks detailed in the Companies' Securities and
 Exchange Commission filings.
 
     CONTACT: Public Relations, Lara Willard of Unisphere Networks,
 978-589-0130, or lwillard@unispherenetworks.com , or Corporate Marketing, Mary
 Beth Daun of Plexus Corp., 920-751-3555, or MaryBeth.Daun@plexus.com
 
                     MAKE YOUR OPINION COUNT -  Click Here
                http://tbutton.prnewswire.com/prn/11690X44536133
 
 SOURCE  Plexus Corp.