Dell Optical USB Wheelmouse

Dell Optical USB Wheelmouse ... records motion more precisely than a traditional mouse. Ease-of-use and better reliability are assured because there are no moving parts to wear out or collect dirt and dust, so the mouse always stays precise. The optical sensor replaces the need for a mouse ball allowing it to work on more surfaces than ever. No mouse pad is needed to operate this component. This product has been tested and validated on Dell systems to ensure it will work with your computer.