O2Micro SifoWorks M520 Receives ICSA Labs IPSec Certification

O2Micro(R) International Limited (Nasdaq:OIIM), a
leading supplier of innovative power management and security
components and systems for the Computer, Consumer, Industrial, and
Communications markets, today announced its SifoWorks M520 Version
2.01.06, internet security gateway appliance product, has passed the
1.0D criteria for ICSA Labs IPSec Product Certification and may use
the ICSA Lab Certification logo on its SifoWorks model M520, Version
2.01.06.
   The SifoWorks M520 IPSec VPN-Firewall product is based on a
proprietary ASIC and achieves a wide range of high performance
security functions at wire speed. The SifoWorks M520 contains a rich
set of security applications that operate with minimal latency,
including deep content detection and filtering, URL blocking and VoIP
H.323 blocking.
   The SifoWorks M520 is well suited for medium and large (small and
medium) scale enterprises, universities, systems integrators and OEMs.
Product information on the SifoWorks M520 is available at
http://o2security.com. In addition, O2Micro has strong FAE technical
support worldwide to assist customers.
   Mark Zimmerman, ICSA Labs IPSec/Cryptography Technology Program
Manager, said, "We greatly value the technical knowledge of O2Micro
during these tests. The O2Micro product was the first ever to pass all
1.0D logging requirements without any deficiencies."
   "The ICSA Labs certification of SifoWorks M520 is a milestone for
O2Micro becoming a recognized leading supplier of internet security
system solutions," said Sterling Du, O2Micro CEO and Chairman.

   About O2Micro

   Founded in April 1995, O2Micro develops and markets innovative
power management, and security components and systems for the
Computer, Consumer, Industrial, and Communications markets. Products
include Intelligent Lighting, Battery Management, Power Management,
SmartCardBus(R) and Security products, such as VPN/Firewall system
solutions.
   O2Micro International maintains an extensive portfolio of
intellectual property with 3,465 patent claims granted, and over 5,000
more pending. The company maintains offices worldwide. Additional
company and product information can be found on the company website at
www.o2micro.com.

   O2Micro, the O2Micro logo, SmartCardBus and combinations thereof
are registered trademarks of O2Micro.