Razer DeathAdder Ergonomic PC Gaming Mouse(RZ01-00840100-R3U1) Hand Orientation: Right Hand Maximum dpi: 6400 dpi Operating System Supported: Windows 8/ Windows 7 / Windows Vista / Windows XP (32-bit) System Requirement: PC / Mac with USB port. Internet connection (for driver installation). At least 35MB of hard disk space. Razer Synapse 2.0 account registration (requiring a valid e-mail address), software download, license agreement acceptance, and internet connection is required to use full feature set of product and to receive updates.