Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 003: ID 1c4f:0002 SiGma Micro Keyboard TRACER Gamma Ivory Bus 002 Device 002: ID 046d:c52f Logitech, Inc. Unifying Receiver Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub