lsusb - complex
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 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 0644:0200 TEAC Corp. All-In-One Multi-Card Reader CA200/B/S
Bus 003 Device 002: ID 0ac8:303b Z-Star Microelectronics Corp. ZC0303 Webcam
Bus 003 Device 003: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser
Bus 004 Device 002: ID 058f:9254 Alcor Micro Corp. Hub
Bus 004 Device 003: ID 10d5:55a2 Uni Class Technology Co., Ltd 2Port KVMSwitcher