Comfortable for any user, this corded USB mouse has a symmetrical design for both right- and left-handed people. The Kensington mouse-in-a-box is corded and has a USB interface for easy connectivity. Comfortable, rounded shape for right-handed or left-handed users. USB plug and play on both PCs and Macs. Optical sensor for reliable mouse control without cleaning. Scroll wheel to speed through long documents and web pages. Guaranteed dependability with extended 5-year warranty.