Having previously with 2 different mice not so good experiences (both in the price segment between 5 and 10) had made in the year, I now wanted to buy a "slightly better" mouse. So I ended at Microsoft - and I was not disappointed. The mouse is modestly furnished and has no frills - but who needs something like this. Two buttons and a scroll wheel are sufficient for me. Installation under Windows 7 without any problem. Plug in and off you go. Additional driver installation or any settings through the Control Panel is not necessary. So far I could not identify any negative points on the device, so 5 stars.