02MICRO ANNOUNCES FIRST QUARTER RELEASE AND CONFERENCE CALL SCHEDULE CHANGE

Date1-May-2006
O2Micro(R) First Quarter Release and Conference Call Schedule Change Monday May 1, 8:30 am ET GEORGE TOWN, Grand Cayman--(BUSINESS WIRE)--May 1, 2006--O2Micro® International Limited (NASDAQ:OIIM - News; SEHK:0457 - News), a leading supplier of innovative power management, and security components and systems for the Computer, Consumer, Industrial, and Communications markets, will announce its financial results for the first quarter ended March 31, 2006 after the market closes on Wednesday, May 3, 2006. The press release will be followed by a conference call at 2:00 p.m. PDT, 5:00 p.m. EDT, and 5:00 a.m. (May 4, 2006) Hong Kong time. You may participate using the following dial-in information.
In the US and CANADA:               888-802-2239, pass code #2347111
In HONG KONG:                       800-965-503, pass code #2347111
Other INTERNATIONAL participants:   913-312-1269, pass code #2347111
A replay of the call will be available by phone until May 10th using the following dial-in information.
In the US and CANADA:               888-203-1112, pass code #2347111
In HONG KONG:                       800-908-709, pass code #2347111
Other INTERNATIONAL participants:   719-457-0820, pass code #2347111
A live simulcast will also be available on the company website at www.o2micro.com, and an online replay will be available on the website for one week. 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® and Security products, such as VPN/Firewall system solutions. O2Micro International maintains an extensive portfolio of intellectual property with 4,615 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. Contact: O2Micro Mitchell Benus, 408-987-5920 ext. 8888 mitchell.benus@o2micro.com -------------------------------------------------------------------------------- Source: O2Micro International Limited