Razer Blackwidow Ultimate 2016 Mechanical Gaming Keyboard Keyboard Interface: USB Design Style: Gaming Mechanical Keyboard: Yes Key Switch Type: Razer Green Backlit: Yes Operating System Supported: Windows 10 / Windows 8 / Windows 7 / Mac OS X (v10.8 - 10.11) 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.
