Bus 001 Device 002: ID 046d:0990 Logitech, Inc. QuickCam Pro 9000
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 1241:e000 Belkin 
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 004: ID 046d:c71f Logitech, Inc. 
Bus 003 Device 003: ID 046d:c71e Logitech, Inc. 
Bus 003 Device 002: ID 046d:0b07 Logitech, Inc. 
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub