Jelly Comb Phantom Knight X9 2400 DPI 6 Buttons Optical Gaming Mouse for PC High-precision optical sensor for responsiveness and stability, easily adjust sensitivity between 800/1200/1600/2400 DPI Ergonomically designed, long-term use without fatigue. Premium quality, comfortable and stable. Compatible with Windows XP/Vista/7/8/Mac OSX and Linux Plug-and-play - Installs In Seconds, wired USB connection is compatible with USB 2.0/3.0