For notebook users who appreciate the enhanced comfort and precision a mouse offers over an integrated touchpad, the Logitech Mouse M115 offers plug-and-play simplicity in a compact, portable design. Just plug the mouse into a USB port to get started no software or batteries to install. Plus, the Logitech Mouse M115 features a compact, portable design that makes it easy to slip it into a bag and take with you; and optical tracking that enables responsive and smooth cursor control. 3 year warranty.