Microsoft Sidewinder X5 9-Button USB Gaming Laser Scroll Mouse w/Up to 2000 DPI, 3 DPI Settings & Macro Support Microsoft Sidewinder X5 9-Button USB Gaming Laser Scroll Mouse General Features: Black color USB interface Designed for right-handed use Avago-based laser technology Five (5) programmable buttons Wide rubber scroll wheel Two (2) vertical thumb button studs On-the-fly DPI switching 2000, 800, 400 DPI resolutions Dynamically adpatable 7080 frames per second