I recently purchased an open box Asus P8P67 board and have been experiencing problems with my USB devices. At random times (idle, light load, gaming), my USB devices seem to be freezing. It seems like the power is getting cut off or something since the lights on my keyboard and mouse aren't lit when they freeze. I have updated my bios to 1850 and still have this problem. Anyone know a solution to this before I request for RMA?