For completeness, I plugged the mouse back into the hub and listed USB devices: $ lsusb Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 011 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 010 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 002: ID 03f0:0e2a Hewlett-Packard Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 009 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 008 Device 002: ID 0764:0501 Cyber Power System, Inc. CP1500 AVR UPS Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 003: ID 2109:0813 Bus 003 Device 002: ID 2109:0813 Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 006: ID 046d:c245 Logitech, Inc. G400 Optical Mouse Bus 002 Device 004: ID 045e:00db Microsoft Corp. Natural Ergonomic Keyboard 4000 V1.0 Bus 002 Device 003: ID 2109:2813 Bus 002 Device 002: ID 2109:2813 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub So it is seen, it just doesn't work.