4 Replies Latest reply: Aug 31, 2013 8:37 AM by Allan Eckert
Fidelity Level 1 Level 1 (25 points)

Hi, does anyone know how the whole "extra current" thing works on the USB ports on a 2012 Macbook Pro? I'm trying to get the additional current draw to power a device that normally runs off a separate 12v line (but needs minimal current - likely ~ 8-12w). Is it available by default or is there some sort of signal sent by other apple devices? Am I going to short out my mac trying to run the device through a step-up converter?