The Pro Fit Wired Washable Mouse, with its waterproof, easy-clean, rugged design, is ideal for maintaining a hygienic surface and cleaning up drips and spills, without sacrificing performance. Comfortable for use with either hand, the wired USB connection delivers reliable performance without the need for batteries. Plug-and-play, so there's no software to download and install. A perfect companion to the Kensington Pro Fit Wired Washable Keyboard (SKU# K64407US). Do not immerse the USB connector.