Bus 002 Device 002: ID 8087:8000 Intel Corp. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 023: ID 0bc2:2320 Seagate RSS LLC USB 3.0 bridge [Portable Expansion Drive]
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 090c:037c Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) 
Bus 003 Device 003: ID 093a:2521 Pixart Imaging, Inc. 
Bus 003 Device 002: ID 04f2:0402 Chicony Electronics Co., Ltd Genius LuxeMate i200 Keyboard
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub