3 ms·Why would you use 5v and not 120?by deelowe 10y agoWhy would you use 5v and not 120?pyre 10y agoThe original USB1.0/1.1 (and 2.0?) specs are for 0.5A @ 5v.deelowe 10y agoOf course, but I don't understand why usb specs are relevant.