Linux: Where the USB related files are

A few notes on where to find USB related kernel files on a Linux system (kernel 3.12.20 in my case) $ lsusb [ ... ] Bus 001 Device 059: ID 046d:c52b Logitech, Inc. Now find the position in the tree. It should be device 59 under bus number 1: $ lsusb -t [ ... ] [...]