This part is a kind of semiconductor called MX8732A.

Function of this product has USB/PS2 Single Chip Optical Mouse Sensor.

Manufacturers : LIZE Electronic

Image and pinout :

Some of the text within the PDF file :

Shenzhen LIZE Electronic Technology Co., Ltd SPECIFICATION MX8732A USB/PS2 Single Chip Optical Mouse Sensor VERSION 1.1 PDF 文件使用 "FinePrint pdfFactory Pro" 试用版本创建 www.fineprint.com.cn Tel:86-755-8835 3502/03/04 Website:http://www.lizhiic.com Fax:86-755-8835 3509 MX8732A U+P Single Chip Optical Mouse Sensor TABLE OF CONTENTS 1. General Description 3 2. Features... 3 3. Pin Assignment... 4 4. Absolute Maximum Rating [ ... ]

MX8732A PDF Datasheet Download