rasher@gaia:~$ lsusb
Bus 004 Device 011: ID 0781:7421 SanDisk Corp. Sansa E200 series
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 003: ID 046d:c504 Logitech, Inc. Cordless Mouse+Keyboard Receiver
Bus 002 Device 002: ID 046d:c012 Logitech, Inc. Optical Mouse
rasher@gaia:~$ sudo lsusb
Bus 004 Device 011: ID 0781:7421 SanDisk Corp. Sansa E200 series
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 004: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 003: ID 046d:c504 Logitech, Inc. Cordless Mouse+Keyboard Receiver
Bus 002 Device 002: ID 046d:c012 Logitech, Inc. Optical Mouse
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000