[_xzxj]

I'm not sure why this person listed so much hardware, I've done some USB protocol reversing using a TotalPhase Beagle 480. I think I probably could have done something in software, but the nice thing is the TotalPhase software is a lot like Wireshark -- which I was already familiar with. I wasn't totally familiar with hacking around USB so it made learning how USB worked much easier instead of me just pulling data off the wire and trying to start from scratch.

[jack12]

With the software-only approach (e.g. usbmon), the interface is even more like Wireshark :) https://wiki.wireshark.org/CaptureSetup/USB