PowerDsine and Sifos Partner to Develop IEEE802.3at High-Power Power over Ethernet Solutions; Enabling Flexible Design of PSE's

PowerDsine (Nasdaq: PDSN) and Sifos today announced that
the two companies will collaborate to deliver solutions that assist
customers to quickly design and verify Power over Ethernet (PoE)
solutions capable of delivering up to 56W of power. This collaboration
will ensure that implementers of pre-standard High-Power PoE
technology solutions will have available both chipset solutions and
the means of testing such solutions, thus reducing time to market.
   Additionally, the planned collaboration will continue so that as
the standardization activities of the IEEE802.3at committee evolve,
both companies will adapt their solutions in accordance with the new
requirements of the standard and help customers launch products in a
quick and timely manner.
   "With several customers' adoption of PowerDsine's new High-Power
PoE solution based on our PD83000 micro-controller, the ability to
test pre-standard High Power over Ethernet became important," said
Igal Rotem, CEO of PowerDsine. "Sifos' flexible PSA test equipment
allows customers to implement testing patterns according to the latest
updates based on the continued work of the IEEE802.3at task force."
   "Sifos is pleased to be working with PowerDsine, an expert in
Power over Ethernet. We are able to gain access to the information,
expertise, and tools that can help us offer the best possible test
solutions to our customers going forward," said David Lucia, CEO of
Sifos.
   The collaboration between PowerDsine and Sifos is important as it
will likely facilitate the deployment of high power applications in a
simpler and more cost effective manner with High-Power Power over
Ethernet as the IEEE802.3at standard evolves.

   About Power over Ethernet Technology

   PoE is a technology for wired Ethernet, the most widely installed
local area network technology in use today. PoE allows the electrical
power necessary for the operation of each end-device to be carried by
data cables rather than by separate power cords. It minimizes the
number of wires that must be used in order to install the network,
resulting in lower cost, less downtime, easier maintenance and greater
installation flexibility.

   About PowerDsine

   PowerDsine Ltd. (NASDAQ:PDSN) designs, develops and supplies
integrated circuits, modules and systems that enable the
implementation of Power over Ethernet in local area networks,
providing the capability to deliver and manage electrical power over
data network cables. PowerDsine offers integrated products and system
solutions to communications equipment manufacturers in the telecom and
datacom industries who incorporate them into, or bundle them with
their products. PowerDsine is a founding, contributing and active
member of the IEEE 802.3af and 802.3at Task Forces. For more
information, please visit http://www.powerdsine.com

   About Sifos

   Sifos Technologies (www.sifos.com) is a privately held
corporation, founded in 2003, and is located in Tewksbury, Mass. near
Boston. Sifos Technologies is the leader in DOCSIS (cable modems,
set-top boxes, cable modem head ends) and PoE test equipment.

   Forward Looking Statements

   Statements made in this press release that are not historical
facts, including statements regarding our expectations of future
events or our future financial performance, are forward-looking
statements made pursuant to the safe harbor provisions of the Private
Securities Litigation Reform Act of 1995. These forward-looking
statements are not guarantees of future performance and are subject to
risks, uncertainties and assumptions about PowerDsine and the matters
covered in this release. You should not place undue reliance on these
statements. Actual events or results may differ materially. Many
factors may cause our actual results to differ materially from any
forward looking statement, including acceptance of new products, costs
relating to such products and other factors detailed in PowerDsine's
filings with the Securities and Exchange Commission, including its
Registration Statement on Form F-1 and its annual report on Form 20-F.
The forward- looking statements are made as of this date and
PowerDsine does not undertake any obligation to update any
forward-looking statements, whether as a result of new information,
future events or otherwise.

   PowerDsine is a registered trademark of PowerDsine Ltd. All other
trade names are the property of their respective owners.