Kensington Mouse-in-a-Box and Keyboard Wired USB Desktop Set (K72436AM) Reliable plug-and-play operation with wired USB connection; Compatible with Windows 8 Spill-proof keyboard resists coffee, water, soda and other liquids Comfortable mouse with contoured shape works for either hand, three-button operation with middle button scroll wheel Sealed membrane lets liquids run through without damaging electronics High-definition optical sensor