Sonnet Announces Three New Gigabit Ethernet Network Adapter Cards

IRVINE, CA– May 8, 2008–Sonnet Technologies, a leader in upgrades and
useful accessories for Apple Mac desktop and notebook computers, announces
the immediate availability of the Presto Gigabit Pro PCI network adapter
card, the Presto Gigabit PCIe Pro PCI Express network adapter card, and the
Presto Gigabit Ethernet Pro ExpressCard/34 network adapter card. These
Sonnet Gigabit Ethernet cards expand or add Gigabit Ethernet connectivity
in any compatible computer, and offer enhanced performance through support
for link aggregation with onboard Ethernet ports, and jumbo packet data
transfers.

Presto Gigabit Pro network adapter cards deliver enhanced networking
support in compatible computers and offer gigabit speeds over common CAT-5
cabling, so costly cable replacement is unnecessary to support the higher
performance. These Sonnet cards are simple to configure and offer
plug-and-play installation in Macintosh computers. Presto Gigabit Pro
network adapter cards’ 1000/100/10BaseT auto-negotiation and full/half
duplex communication support allow them to be used in most networks.

Presto Gigabit Pro Compatibility
— Power Macintosh G3 All-in-one, Blue & White, Desktop, Minitower, Server
— Power Mac G4 (all models except Cube)
— Power Mac G5 (with PCI or PCI-X slots ONLY)
— Xserve G4
— PC with PCI slots
— Mac OS OS X Version 10.4+
— Windows Vista
— Windows Server 2003
— Windows XP with SP2

Presto Gigabit PCIe Pro Compatibility
— Mac Pro
— Power Mac G5 (with PCI Express slots)
— Xserve (with PCI Express slots)
— PC with PCI Express slot
— Mac OS X Version 10.5.2+
— Windows Vista
— Windows Server 2003
— Windows XP with SP2

Presto Gigabit Ethernet Pro ExpressCard/34 Compatibility
— MacBook Pro
— PC notebook computer with ExpressCard slot
— Mac OS X Version 10.5.2+
— Windows Vista
— Windows XP with SP2

Pricing and Availability

Presto Gigabit Pro (part number GE1000LA) is available now for the retail
price of USD $99.95.

Presto Gigabit PCIe Pro (part number GE1000LA-E) is available now for the
retail price of USD $99.95.

Presto Gigabit Ethernet Pro ExpressCard/34 (part number GE1000LA-E34) is
available now for the retail price of USD $79.95.
For information on Presto Gigabit Pro, visit the Sonnet web site at:
(http://www.sonnettech.com/product/prestogigpro.html)

For information on Presto Gigabit PCIe Pro, visit the Sonnet web site at:
(http://www.sonnettech.com/product/prestogigpciepro.html)

For information on Presto Gigabit Ethernet Pro ExpressCard/34, visit the
Sonnet web site at:
(http://www.sonnettech.com/product/prestogigproec34.html)

About Sonnet Technologies, Inc.

Sonnet Technologies is a leading supplier of upgrade cards,
high-performance disk solutions and other accessories for Apple Macintosh
computers. Founded in 1986, Sonnet commemorates twenty-one years making
Macintosh upgrades. To locate an authorized reseller or purchase product,
visit the Sonnet Technologies web site at (http://www.sonnettech.com).