lsusb - Sapphire AMD Radeon HD 6750
Bus 006 Device 002: ID 8087:8000 Intel Corp.
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 8087:8008 Intel Corp.
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 003: ID 1e7d:2c2e ROCCAT
Bus 001 Device 002: ID 046d:c316 Logitech, Inc. HID-Compliant Keyboard
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub