20 MMO-tuned buttons: Includes unique 12-button thumb panel designed for quick, no-look navigation. The low-friction polytetrafluoroethylene feet eliminate friction on nearly any surface for smoother motions, precise cursor movements and improved accuracy G-shift ring-finger button: Instantly double the number of actions you can perform with every button Built for comfort: Sculpted shape and tuned buttons reduce click fatigue during marathon multiplayer sessions. G8-cycle modes Total personalization: Set it up your way with customizable thumb panel lighting colors, DPI levels or button assignments. Do not use a USB hub Made for PC gaming: Compatible with Windows Vista, Windows 7 and Windows 8