CORRECTION -- O2Micro Schedules First Quarter Release and Conference Call

Mar 28, 2011

GEORGE TOWN, Grand Cayman, March 28, 2011 (GLOBE NEWSWIRE) -- O2Micro® International Limited (Nasdaq:OIIM) will announce its financial results for the first quarter, ended March 31, 2011, on Wednesday, May 4, 2011.

The press release will be followed by a conference call at 7:00 a.m. PDT, 10:00 a.m. EDT. You may participate using the following dial-in information.

In the US and CANADA: 888-857-6929, passcode #9500009
INTERNATIONAL participants: 719-325-2313, passcode #9500009

A replay of the call will be available by phone until May 11th using the following dial-in information.

In the US and CANADA: 888-203-1112, passcode #9500009
INTERNATIONAL participants: 719-457-0820, passcode #9500009

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 e-commerce components for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management, and SmartCardBus®.

O2Micro International maintains an extensive portfolio of intellectual property with 15,621 patent claims granted, and over 16,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.

The O2Micro International Limited logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=6567

O2Micro, the O2Micro logo, SmartCardBus, and combinations thereof are registered trademarks of O2Micro. All other trademarks are the property of their respective owners.

CONTACT: Gary E. Abbott

         Director of Investor Relations, O2Micro

         Phone: 408.987.5920, x8888

         Email: gary.abbott@o2micro.com