HT82M25X 3/5-Key USB+PS/2 Optical Mouse Controller.
HT82M25X - 3/5-Key USB+PS/2 Optical Mouse Controller
HT82M25X 3/5-Key USB+PS/2 Optical Mouse Controller Features · Operating voltage: 4.4V~5.25V · Compatible with Microsoft Windows 2000 and · USB transce.