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I dreamed I found a Microsoft external floppy drive that used a USB-B port for power, but I checked and it ran 12v over the usual USB power pins... And -24v over the data pins.
@foone Not that far from it there's USB +Power, however it doesn't use the normal power pins.
haxadecimal 
@brouhaha @faebudo @foone Having briefly worked in the POS industry, nah, they'll just make a USB-C variant of the USB+Power ports because vendor lockin + keyed ports + less circuitry = winning.
(On keyed ports: we numbered the ports and cables on all the equipment we shipped. Yes, even the power cable and cables which could literally only plug in to one port.)
Also, you're missing the most cursed part of that image: the Cash Drawer port.
@juliancalaby @faebudo @foone
Of course even mechanically incompatible connectors still have to be numbered. With enough force, any two connectors can be mated.