BenQ ZOWIE EC1-A Mouse for e-Sports Features Ergonomic right-handed design for increased comfort Plug and Play (No drivers needed) 400 / 800 / 1600 / 3200 DPI adjustment Adjustable USB report rate 125 / 500 / 1000 Hz Perfect lift-off distance Operating system: Win2000/XP/VISTA/7/8; Mac OS X v10.2