I recently upgraded to 10.3 from 10.2 and now when I plug my flash drive into the keyboard USB port it complains that the port is drawing to much power and will now be shut down the port. I know the keyboard is unpowerd but before with 10.2 the keyboard had enough power to run my jump drive, has anyone else has this problem? Second how do I reactivate the USB port? I cant use that port again until I restart the computer.