davis@lenovo:~$ lsusb
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 8087:07dc Intel Corp.
Bus 003 Device 004: ID 5986:055e Acer, Inc Lenovo EasyCamera
Bus 003 Device 003: ID 15d9:0a4c Trust International B.V. USB+PS/2 Optical Mouse
Bus 003 Device 007: ID 0c45:64ab Microdia Integrated Camera
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub