Silent clicking for quiet environments, ambidextrous, contoured shape for either right-handed or left-handed users, high-definition optical sensor, three Button/Scroll Wheel setup, plug & Play installation with reliable, wired USB connection, Compatible with Windows 8. 1, 8, 7 and Mac OS X. Claim a free Leitz Z1000 Air Purifier when you spend over 100 on selected Kensington & Leitz Ergonomic products until 30th September 2023 Terms & Conditions apply, to claim please register online here. The Wired ValuMouse features a three-button/scroll wheel setup that offers 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 and the comfortable, contoured shaping feels great for either right-handed or left-handed users. It offers Plug & Play installation with a standard USB wired connection.