O2Micro(R) Selects WANdisco for Sarbanes-Oxley Compliant Multi-Site Development.

PLEASANTON, Calif. & GEORGE TOWN, Grand Cayman -- O2Micro([R]) International Limited (NASDAQ([R]):OIIM)(SEHK:0457), a leading supplier of innovative power management, and security components and systems, today announced its selection of WANdisco's Sarbanes-Oxley (SOX) compliant Concurrent Versions System (CVS) to support their globally distributed development efforts.

In an ongoing effort to manage various regulatory costs, like SOX, O2Micro chose the services of WANdisco over other security options available for CVS that offer limited support and restricted audit reporting capabilities.

"The fact that WANdisco can address regulatory requirements imposed by SOX which are starting to impact software development organizations and intellectual property protection made a big difference for O2Micro," said Steve Krems, Information Technology Director at O2Micro. Mr. Krems adds, "With this implementation, we anticipate network performance improvement, and a reduction in development cycle time and risk of valuable intellectual property losses."

"We are delighted that O2Micro selected WANdisco to help protect some of its most important assets," said David Richards, President and CEO of WANdisco. "Securing source code that is developed on a worldwide basis is now an imperative for any public company."

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 5,766 patent claims granted, and over 7,000 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. All other trademarks are the property of their respective owners.

About WANdisco

Since 2001 WANdisco has set out to push the limits of what can be achieved with distributed systems deployed on a Wide Area Network (WAN). The result of these efforts is new technology that fundamentally changes the way distributed nodes, or servers, interact to provide unprecedented levels of reliability, availability and scalability (RAS) enabling the internet to realize its full potential. WANdisco has applied this technology to the development of its suite of multi-site SCM solutions for CVS, CVSNT, and Subversion. For the first time a development team can truly be spread-out across the world and work as one unit, in real-time.

Global 2000 companies rely on WANdisco's suite of SCM solutions for CVS, CVSNT and Subversion to enable them to distribute work based on where their talent is located, rather than on the basis of time-zone constraints. This results in dramatically reduced costs and significantly improved utilization of scarce resources, visit http://www.wandisco.com.

Statements made in this release that are not historical, including statements regarding O2Micro's or management's intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that may cause actual results to differ materially from those set forth in these statements. Factors that could cause actual results to differ materially include risks and uncertainties such as reduced demand for products of electronic equipment manufacturers which include O2Micro's products due to adverse economic conditions in general or specifically affecting O2Micro's markets, technical difficulties and delays in the developments process, and errors in the products. You are also referred to the Form F-1 in connection with the company's initial public offering in August 2000, Form F-3 in connection with the company's public offering in November 2001, and the annual reports on Form 20-F, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. The company assumes no obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise.