/usbclasses/
drwxr-xr-x [up]
drwxr-xr-x group
drwxr-xr-x pictbridgeengine
drwxr-xr-x usbbasicpersonality
drwxr-xr-x usbmscpersonality
drwxr-xr-x usbobexclasscontroller
drwxr-xr-x usbphoneasmodem