lsusb

scott@main:~$ lsusb
Bus 009 Device 005: ID 10d5:55a2 Uni Class Technology Co., Ltd 2Port KVMSwitcher
Bus 009 Device 004: ID 1d57:fa60 Xenta
Bus 009 Device 003: ID 1a2c:3d43 China Resource Semico Co., Ltd
Bus 009 Device 002: ID 058f:9254 Alcor Micro Corp. Hub
Bus 009 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 003: ID 058f:6364 Alcor Micro Corp. AU6477 Card Reader Controller
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 002: ID 051d:0002 American Power Conversion Uninterruptible Power Supply
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 1415:2000 Nam Tai E&E Products Ltd. or OmniVision Technologies, Inc. Sony Playstation Eye
Bus 003 Device 004: ID 8888:a201
Bus 003 Device 002: ID 04cc:1521 ST-Ericsson USB 2.0 Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 007: ID 1058:1130 Western Digital Technologies, Inc. My Book Essential (WDBACW)
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 1058:070b Western Digital Technologies, Inc. My Passport Elite (WDBAAC)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
scott@main:~$