Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 0bda:0158 Realtek Semiconductor Corp. Mass Storage Device
Bus 001 Device 003: ID 064e:a116 Suyin Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub