robinson@family-desktop:~$ VBoxManage list usbhost
VirtualBox Command Line Management Interface Version 1.5.6
(C) 2005-2008 innotek GmbH
All rights reserved.

Host USB Devices:

UUID:               37a04b82-7788-40e7-518a-75be08f2a67b
VendorId:           0x0781 (0781)
ProductId:          0x7423 (7423)
Revision:           205.228 (205228)
Manufacturer:       SanDisk
Product:            SanDisk Sansa e250
SerialNumber:       64FEE3026199B4870000000000000000
Address:            /proc/bus/usb/005/054
Current State:      Unavailable

robinson@family-desktop:~$ ls -l /proc/bus/usb/005/054
crwxrwxrwx 1 root root 189, 565 2008-04-19 17:48 /proc/bus/usb/005/054
robinson@family-desktop:~$