Windows 8.1, surface pro I have been using usb since purchasing this pro a couple weeks ago. No issues at all. now the surface wont recognize any of my usb 2.0 devices. I used a microsoft wireless mouse (wireless notebook optical mouse 2000) for the first time the other day, so hard to say if that was the time the rest stopped working or not. after trying all other usb devices, and seeing they are not recognized when I plug them in... the last one, the mouse, is the only one the surface recognizes. I am in remote northen vietnam right now... using GPS to navigate and I need to be able to plug my garmin in... good timing for this! Any help???