said by broccoli:
Why not get it straight from the horse's mouth?
USB Implementers Forum documents
All the technical details about USB, and then some.
It's only after going through the official docs that I realized so many supposedly USB-compliant products are really out of spec.
While this is great for a very indepth understanding, it's far too in depth for what I am looking for which was just a simple Visual Reference key. It certainly should not be overlooked for someone looking to insure that they are spec compliant, however, that is way out side of what I needed for my purposes.--
Life is a giant fish bowl... There is no way out but up..