Another example of mini-AB is the TI-84 series. Two calculators can be directly connected but a USB A-A cable is verboten by the spec (although I sometimes see them nonetheless), so TI put an AB port on the calculator and sold a mini-A to mini-B cable. It is somewhat confusing to users that a cable with two different ends was nonetheless completely transposable.
I'm not sure of this at all but I sort of doubt the TI-84 used spec compliant OTG, because in general the USB implementation on that calculator was very weird and unreliable and gave the feeling that they were doing something uncouth like bit-banging and not quite fast enough. I remember it routinely taking multiple attempts to get something to transfer successfully.
I'm not sure of this at all but I sort of doubt the TI-84 used spec compliant OTG, because in general the USB implementation on that calculator was very weird and unreliable and gave the feeling that they were doing something uncouth like bit-banging and not quite fast enough. I remember it routinely taking multiple attempts to get something to transfer successfully.