Razer Diamondback Chroma RGB Laser Gaming Mouse Maximum dpi: 16000 dpi Operating System Supported: Windows 10 / Windows 8 / Windows 7 / Mac OS X (v10.8 - 10.10) System Requirement: PC or Mac with a free USB port Internet connection 100 MB of hard disk space Razer Synapse 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
