lsusb - test complex system
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 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 002 Device 002: ID 0458:0063 KYE Systems Corp. (Mouse Systems)
Bus 003 Device 002: ID 046d:c214 Logitech, Inc. ATK3 (Attack III Joystick)
Bus 003 Device 003: ID 05fe:0011 Chic Technology Corp. Browser Mouse