Kensington 72356 mouse-in-a-box wired optical mouse, black wired mouse provides reliable, optical mouse performance with a convenient, optical sensor and dependable scroll wheel. Optical sensor does not require cleaning and easily moves your cursor where it needs to go. Scroll wheel speeds through long documents and web pages. Plug-and-play lets it work with your computer, right out of the box. Simply plug into your usb port. Mouse is compatible with windows 7, vista, xp, and mac os x or later. Mouse works well with right-handed or left-handed users.