lsusb - Test-ramspeed-X220
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 006: ID 04f2:b217 Chicony Electronics Co., Ltd Lenovo Integrated Camera (0.3MP)
Bus 001 Device 007: ID 0483:5018 STMicroelectronics
Bus 001 Device 008: ID 15d9:0a4c Trust International B.V. USB+PS/2 Optical Mouse
Bus 001 Device 009: ID 8087:0a5d Intel Corp.
Bus 001 Device 005: ID 17ef:100a Lenovo ThinkPad Mini Dock Plus Series 3
Bus 001 Device 003: ID 147e:2016 Upek Biometric Touchchip/Touchstrip Fingerprint Sensor
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub