I generally try to avoid Amazon as much as I can these days. Unless I know some supplier only really sells through Amazon I try and buy directly or use another retailer. Far too hard to tell if I'm buying something legit or not.
Once upon a time (more than 5 years ago), I bought a small Bluetooth USB on Amazon that also required some manual work before I was able to stick it into a normal USB port... it was very slightly more massive and careful filing took care of it.
One would expect that there is nothing more standard than USB-A. Nope. There is an exception for every rule.
