Overview Utilizing the latest optical sensing technology, the HP USB (Universal Serial Bus) Optical Scroll Mouse records precise motion over a variety of surfaces without a mouse pad. Features &8226; Optical tracking
- Reduce sticking & constant cleaning with optical tracking
- a system that works through light with less moving parts for greater durability than ball-based mice. &8226; Users benefit from a smooth, contoured shape that fits both hands
- & a wheel that functions as a third button. &8226; The optical sensor within the HP USB (Universal Serial Bus) Optical Scroll Mouse employs a scan rate of 800dpi & enables crisp motion without a mouse pad, ball or roller.