You could look at 'lsusb -v' for that device and then look at these fields: (e.g., from a "transceiver" device for a wireless kbd/mouse) iManufacturer 1 Dell Computer Corp iProduct 2 Dell Universal Receiver iSerial 0 You should see iManufacturer and iProduct set to 0.
iManufacturer 0 iProduct 1 USB OPTICAL MOUSE
