Wired mouse features a three-button/scroll wheel setup that offers nearly silent clicking when you need to get work done and don’t want to disturb anyone in a quiet environment. A high-definition optical sensor provides reliable and responsive control when you’re navigating. The comfortable, contoured shaping feels great for either right-handed or left-handed users. It offers plug-and-play installation with a standard USB wired connection. Connector/Port/Interface: USB 2.0; Left/Right Hand Use: Left/Right; Mouse Technology: Optical; Wired/Wireless: Wired.