lsusb
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 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 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 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 05ac:1006 Apple, Inc. Hub in Aluminum Keyboard
Bus 002 Device 003: ID 05ac:8502 Apple, Inc. Built-in iSight
Bus 003 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 005 Device 004: ID 04b8:0005 Seiko Epson Corp. Printer
Bus 007 Device 002: ID 05ac:8242 Apple, Inc. IR Receiver [built-in]
Bus 001 Device 004: ID 05ac:0221 Apple, Inc. Aluminum Keyboard (ISO)
Bus 003 Device 003: ID 05ac:820f Apple, Inc. Bluetooth HCI
Bus 003 Device 006: ID 045e:077b Microsoft Corp.
matbos@pc8:~$