Here is 1 driver compatible with USB\VID_0AC8&PID_3420&MI_00.
This is Device ID of Lenovo EasyCamera.
Category:Notebooks
Manufacturer:Lenovo
Hardware:3000 N500
Software name:Bison/Chicony Camera Driver
Version:6.32.714.7
File Size:10.38Mb (10882800 bytes)
Released:18 Nov 2008
System:Windows VistaWindows XP
Description:Bison/Chicony Camera Driver for Windows Vista 32-bit and Windows XPDownload Lenovo 3000 N500 Bison/Chicony Camera Driver 6.32.714.7