For setting up Logitech Mouse M105 - Black AP, just plug the mouse into a USB port and it s ready to use. Absolutely no software or batteries required. You get a mouse you can count on with the high quality and reliability that have made Logitech the global leader for mouse. You ll enjoy smooth cursor control, precise tracking and easy text selection, thanks to high-definition optical tracking (1000 dpi). Your hand will be more comfortable with this than with your touchpad. It is designed to keep either hand happy. So you will feel comfortable, even after hours of use. This mouse comes with the quality and design tried and tested into more than a billion mice, more than any other manufacturer.