>>15
You're STILL not reading my earlier post - I suggested having multiple pins in the standard connector for multiple voltages (just four or five voltages and common ground), and device manufacturers just connect the appropriate pins in the charging/power socket on their device to select the voltage(s) required for the application. If there was a standard for low-power DC power connectors, device manufacturers would design their stuff to comply with it. It wouldn't cost any more per socket than a handful of the current AC adapters we all have cluttering our homes, and you'd only need a few (one per room). But, like I say, just a pipe-dream (or would that be a wire-dream?).