Bus 002 Device 002: ID 046d:c042 Logitech, Inc. 
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 006: ID 1058:0901 Western Digital Technologies, Inc. MyBook External HDD
Bus 001 Device 005: ID 058f:6377 Alcor Micro Corp. Multimedia Card Reader
Bus 001 Device 004: ID 1058:1001 Western Digital Technologies, Inc. External Hard Disk
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub