Logitech-ę Mouse M90 gives you just the basics for comfortable, reliable control of your computer. It‘«÷s built by Logitech‘«Ųthe mouse experts‘«Ųand comes with the quality we‘«÷ve built into more than a billion mice. There‘«÷s no software to install. And since it‘«÷s corded, you can just plug the cable into a USB port and use it right away. The full-size, ambidextrous shape means your hand will rest comfortably, while high-definition optical tracking (1000 dpi) means you‘«÷ll get responsive, smooth cursor control for precise tracking and easy text selection.