Comfort and reliability are critical in any office environment. And the Kensington Pro Fit® USB Wired Mid-Size Mouse delivers both. The mid-sized right-handed design feels great in the hand while the wired plug-and-play connectivity delivers high reliability and zero setup. PC and Mac compatible. Mid-size, right-handed design for lasting comfort. Dedicated forward and back buttons. Designed to withstand drops and spills. USB connection delivers instant plug and play use. Compatible with Windows® 8. Period of Warranty 3 years.