Evoluent Vertical Mouse 2 Right Handed Right Handed Optical Mouse USB Connection Windows XP & Newer automatically install mouse drivers The Evoluent VerticalMouse 2 supports your hand in a fully upright handshake position that eliminates the forearm twisting required by ordinary mice. Once you experience the superior comfort, you will never go back to ordinary mice 5 buttons Windows without a driver: left click (top), right click (middle), back (bottom), middle click (wheel), forward (thumb).