lsusb on my Linux (Ubuntu) machine and here is my result:
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 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 003: ID 413c:2005 Dell Computer Corp. RT7D50 Keyboard Bus 001 Device 004: ID 413c:3016 Dell Computer Corp. Optical 5-Button Wheel Mouse Bus 001 Device 005: ID 03f0:a007 Hewlett-Packard
The last 3 entries are my USB keyboard, mouse, and headphones which makes sense since I have them physically plugged into the computer. I am confused on what the
Linux Foundation 2.0 root hub and the
Intel Corp. Integrated Rate Matching Hub is.
I also am wondering why some of the entries are listed twice and what the difference is between 'Bus' and 'Device'. Some of the entries are on bus 001 while others are on bus 002.