root@xen-servidor:~# xm usb-list debian-prueba
Idx BE  state usb-ver  BE-path
0   0   1     USB2.0  /local/domain/0/backend/vusb/13/0
port 1: 1-3
port 2: 1-2 [ID 0402:5661 ALi Corp. Audio Player]
port 3:
port 4:
port 5:
port 6:
port 7:
port 8:
port 9:
port 10: