lsusb - test
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 011: ID 1687:3257 Kingmax Digital Inc.
Bus 001 Device 003: ID 413c:2107 Dell Computer Corp.
Bus 001 Device 004: ID 152e:2571 LG (HLDS)
Bus 001 Device 005: ID 0624:0248 Avocent Corp.
Bus 002 Device 003: ID 04b3:310d IBM Corp.
Bus 001 Device 006: ID 0624:0249 Avocent Corp.