USB\VID_0421&PID_0640 drivers

Drivers /  USB /  VID_0421 /  PID_0640

Hardware IDs

Modems

USB\VID_0421&PID_0640&MI_00

Ports (COM/LPT/Serial)

USB\VID_0421&PID_0640&MI_02
USB\VID_0421&PID_0640&MI_07

Universal Serial Bus controllers

USB\VID_0421&PID_0640&MI_04