Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 046d:c03f Logitech, Inc. UltraX Optical Mouse
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 2304:0208 Pinnacle Systems, Inc. [hex] Studio PCTV USB2
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 058f:6363 Alcor Micro Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub