Kensington's Orbit Wireless Mobile Trackball Mouse is a stellar, smooth, wireless means of navigating through programs, web pages, documents, and the like on your Windows or Mac computer. This mouse features a center-ball design that allows you to fluidly glide along while working on your computer. In addition, this mouse is designed to work with either left or right-handed users and utilizes a storable, nano USB receiver for establishing a wireless connection with your computer. Simply plug the receiver into a USB port on your computer and the mouse will wirelessly connect via the 2.4 GHz band. The mouse is plug-and-play so you can begin using it out of the box without first having to install drivers. In addition, TrackballWorks software is included so that you can tailor the mouse's settings to your liking.