lsusb - test
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 004: ID 1770:ff00
Bus 003 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 003 Device 006: ID 0cf3:3004 Atheros Communications, Inc.
Bus 003 Device 002: ID 1058:1021 Western Digital Technologies, Inc. Elements 2TB
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub