what can I say? The same problem as my Vorrezensenten. The mouse is not detected at startup. Repeated plugging and unplugging the USB connector until the mouse is detected times and responding. Too bad, I liked the mouse very well, visually, because it nunmal blue lights and the handling it was great too. She was very good in my hand. Since I have another Gespürr by an accident at work in his right hand and the fingers are slightly verkrüpelt me was very important. All buttons were easy to reach and also the reaction of the mouse was quickly and satisfactorily. Only this eternal plugging and unplugging, which does not go flat. for I have no time for it and it was also too expensive. I have a heavy heart again to send back. Too bad that the manufacturer obviously until today could not fix: /
