Add comfort and control to your computing experience with MS111 USB Optical Mouse from Dell™. The high-performance optical engine captures small movement inputs with ease. 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 alike with fast and accurate responses. This product has been tested and validated on Dell systems. It is supported by Dell Technical Support when used with a Dell system., High-performance, reliable optical engine with faster, more accurate response Designed to maximize your comfort and productivity Features three easy to use buttons including scroll wheel