Hello i got problem my USB disconect and conect few times per day happend randomly i use windows 8.1 pro x64 everything up to date, drivers for MB, nothing missing in device manager, so i try to disable in power options usb selective suspend setting and same thing happend, i got logitech g502 mouse and g110 keyboard, latest drivers, bios up to date 2012 version. Pls help!