First the positive: Fits comfortably in your hand and the range is very good, the receiver at the back of the computer and a distance of 3 m works fine. but .... Driver prevents the automatic standby, though wake-up on USB is exhibited in the Bios. If you drive the computer manually in Standby, the mouse freezes be turned on again and off and on when you wake up before the cursor responds again. As mentioned in other reviews, very picky when it comes to the ground on which they can be traded. Next time sure another mouse!