Ok, I'm struggling here. I've tried plugging in a kindle fire and a nokia lumia 928 into my surface through USB and it won't recognize either of them. both of them will charge when they are plugged into the surface but the surface doesn't seem to do anything with them I check device manager and they do not come up when plugged in. I did plug the Kindle and the Lumia into my laptop to make sure that the cord worked. (laptop is win 7 which I'm more familiar with) and My laptop was able to see the kindle and the Lumia without a problem. Something is up with the surface where Its not loading the drivers for either when they are plugged in. I also plugged in a USB thumb drive to the surface and it loaded up like a charm. So anyone have any other ideas on why both the kindle and Lumia are not wanting to sync up with the Surface?