Add new levels of comfort and control to your computing experience with the 2-Button PS/2 Optical Mouse from Dell?. It uses high-performance optical engine that captures data faster. Ease-of-use and better reliability are assured because there are no moving parts to wear out or collect dirt and dust. Featuring two buttons, this mouse is ideal for Internet enthusiasts and gamers looking for fast, accurate response. This product has been tested and validated on Dell ? systems to ensure it will work with your computer. It is supported by Dell ? Technical Support when used with a Dell system.