Unfortunately, I have the problem that the touch panel is not illuminated when booting the computer. By switching off and plug the USB plug the Tochpad lights up again. By re-start the PC can light the touch pad again, but it does not have, then only helps unseating and seating. This procedure is annoying in the long run. I've read of similar incidents in the reviews. The question is whether these keyboards have only the problem or simply all and can live with the owners. I can therefore definitely not live and should be so again tomorrow, I will send the keyboard back! That would be a shame, because otherwise the keyboard is really succeeded.