That's a reading of the standard I've not considered. That the wall wart accepts a USB A plug, with a micro USB on the other end. I don't get why they would sp

That's a reading of the standard I've not considered. That the wall wart accepts a USB A plug, with a micro USB on the other end. I don't get why they would specify the micro USB in that case, but they do. I still think the spec was intended to be USB A on one end, and Micro USB on the other. But that's entirely plausible without actually going back and reading it again..