Razer Taipan eSports Edition - Evil Geniuses Mouse Grip Style: Adjustable Maximum dpi: 8200 dpi Hand Orientation: Both Hands Operating System Supported: Windows 10 / Windows 8 / Windows 7 / Mac OS X (v10.8 - 10.11) System Requirement: PC / Mac with USB portInternet connection100MB of free hard disk spaceRazer Synapse 2.0 registration (requiring a valid e-mail), software download, license acceptance, and internet connection needed to activate full features of product and for software updates. After activation, full features are available in optional offline mode.