[2 TABLE OF CONTENTS PART I Item 1. Identity of Directors, Senior Management and Advisors [5] Item 2. Offer Statistics and Expected Timetable [5] Item 3. Key Information [5] Item 4. Information on the Company [14] Item 4A. Unresolved Staff Comments [22] Item 5. Operating and Financial Review and Prospects] [2 Significant Subsidiaries of O 2 2 2 2 2 2 2 2 International Asset Holding Company, a Cayman Islands company] [CERTIFICATION I, Sterling Du, certify that: 1. 2 I have reviewed this annual report on Form 20-F of O 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made,] [CERTIFICATION I, Perry Kuo, certify that: 1. O 2 Micro I have reviewed this annual report on Form 20-F of 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were] [2 O CERTIFICATION 2 (1) (2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated. Sterling Du Chief Executive Officer Perry Kuo Chief Financial Officer and Principal Accounting Officer] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 2 We consent to the incorporation by reference in Registration Statement Nos. 333-12670, 333-12672, 333-98425, 333-101452, 333-107975, 333-116596, 333-132251, 333-153436, and 333-162489 on Form S-8 of our reports dated April 25, 2012 relating to the consolidated financial statements of O Deloitte & Touche Taipei, Taiwan Republic of China April 25, 2012]

[2 TABLE OFNTENTS PART I Item 1. Identity of Directors, Senior Management andvisors [5] Item 2. Offer Statistics and Expected Timetable [5] Item 3. Key Information [5] Item 4. Information on thempany [14] Item 4A. Unresolved Staffmments [22] Item 5. Operating and Financial Review and Prospects [22]] [2 Significant Subsidiaries of O 2 2 2 2 2 2 2 2 Internationalsetmpany, ayman Islandsmpany exh_81.htm 2 EX-8.1] [CERTIFICATION I, Sterling Du, certify that: 1. 2 I have reviewed this annual report on Form 20-F of O 2. Based on my knowledge, this report does notntain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which] [CERTIFICATION I, Perry Kuo, certify that: 1. O 2 Micro I have reviewed this annual report on Form 20-F of 2. Based on my knowledge, this report does notntain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under] [2 O CERTIFICATION 2 (1) (2) the informationntained in the Report fairly presents, inl material respects, the financialndition and results of operations of thempany at thetes and for the periods indicated. Sterling Du Chief Executive Officer Perry Kuo Chief Financial Officer and Principal Accounting Officer exh_13.htm] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 2 Wensent to theorporation by reference in Registration Statement Nos. 333-12670, 333-12672, 333-98425, 333-101452, 333-107975, 333-116596, 333-132251, 333-153436, and 333-162489 on Form S-8 of our reportsted April 25, 2012 relating to thensolidated financial statements of O Deloitte & Touche Taipei, Taiwan]