lsusb - ut-1920x1080-20150308
Bus 004 Device 089: ID 045e:0040 Microsoft Corp. Wheel Mouse Optical
Bus 004 Device 088: ID 0461:0010 Primax Electronics, Ltd HP Keyboard
Bus 004 Device 087: ID 413c:2513 Dell Computer Corp. internal USB Hub of E-Port Replicator
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 004: ID 0c45:648b Microdia Integrated Webcam
Bus 003 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 003 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
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 010: ID 046d:0a04 Logitech, Inc. V20 portable speakers (USB powered)
Bus 001 Device 009: ID 413c:2513 Dell Computer Corp. internal USB Hub of E-Port Replicator
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub