Originally Posted by panache45
I may be wrong, but don't the different types have different-shaped plugs and receptacles?
No... there are several different-shaped plugs, but I don't think that has anything to do with the speed rating of the cable, it's just a question of picking the best one out of a few standard (or non-standard) USB ends makes sense for what the host device being plugged into is. At least, that's what I'm assuming... I have a bunch of cables that came with USB 1.0/1.1 devices that have exactly the same plug shapes as devices that definitely take advantage of USB 2.0 , particularly mini B and full B shaped plugs. A plugs (the ones that go into the computer end) are all a standard shape, of course.
There are cables that go directly into custom cradles, or cables that are firmly attached to the device like my card reader, of course. Probably the most unusual cable I have is the one that goes into my otis audiobook player... the plug on that one is considerably smaller than a mini B, though sort of the same general shape. a micro B maybe??