Multi-Award Winning Razer Mechanical Switches Designed specifically for gaming, the Razer Mechanical Switch actuates at an optimal distance, giving you speed & responsiveness like never before. The Razer Mechanical Switch has been lauded as the new standard for all mechanical gaming keyboards since its introduction. Engineered for Durability No matter how intense your gaming marathons get, each Razer Mechanical Switch is engineered to withstand up to 60 million keystrokes, so you’ll enjoy the Razer advantage for longer. Individually backlit keys with dynamic lighting effects The all-new Razer Black Widow Ultimate features individually programmable backlit keys along with dynamic lighting effects all set easily through Razer Synapse. Technical Specs Razer Mechanical Switches with 45g actuation force 60 million keystroke life span Individually backlit keys with Dynamic lighting effects Razer Synapse enabled 10 key roll-over anti-ghosting Fully programmable keys with on-the-fly macro recording Gaming mode option Audio-out/mic-in jacks USB (Universal Serial Bus) pass-through 1000 Hz Ultrapolling Braided fiber cable System Requirements PC or Mac with a free USB (Universal Serial Bus) port Windows 10 / Windows 8 / Windows 7 / Mac OS X (v 10.8-10.11) Internet connection 100 MB of hard disk space