Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 046d:082b Logitech, Inc. Webcam C170
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 046d:0a1f Logitech, Inc. G930
Bus 001 Device 003: ID 1e7d:2cb0 ROCCAT 
Bus 001 Device 002: ID 046a:0106 Cherry GmbH R-300 Wireless Mouse Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub