Right-handed comfort, plug-and-play The Kensington Pro Fit ™ Full-Size Mouse USB/PS2 has an ergonomic, right-handed shape with a soft rubber grip for all-day comfort. It features a high-definition optical sensor with a pointer speed quick-select button for enhanced productivity. It has the plug-and-play reliability of a wired USB or PS2 connection. And it is built to last with a limited lifetime warranty. - Ergonomic, right-handed shape with soft rubber grip - Pointer speed quick-select button - Forward/back buttons - High-definition optical sensor (up to 2400 DPI) for responsive control - USB/PS2 adapter for flexibility - Plug and Play - no drivers required - Scroll wheel with middle button - Built to last with a limited lifetime warranty