con masterizzatore collegato mi restituisce:

bus 005 device 001: id 1d6b:0001 linux foundation 1.1 root hub
bus 004 device 001: id 1d6b:0001 linux foundation 1.1 root hub
bus 003 device 001: id 1d6b:0001 linux foundation 1.1 root hub
bus 002 device 001: id 1d6b:0001 linux foundation 1.1 root hub
bus 001 device 004: id eb1a:2761 eMPIA technology inc eeepc 701 intergrated webcam
bus 001 device 003: id 0951:1606 kingston technology
bus 001 device 002: id 0411:0165 melco, inc
bus 001 device 001: id 1d6b:0002 linux foundation 2.0 root hub