Razer BlackWidow Expert Mechanical Gaming Keyboard with 10 Key Rollover Built around Razer's award-winning Mechanical Switches designed from the ground up for hard-core gaming. The crisp, tactile feel, responsiveness and consistency deliver a unique unfair gaming advantage. Extreme Durability- Razer mechanical switches are rated up to 80 million keystrokes and come with a 2-year warranty. Fully programmable keys + 5 additional gaming keys with on-the-fly macro recording USB, 3.5mm headphone and microphone ports allow for easy cable routing Easy access media keys for convenient volume control and media playback 10 key rollover for extreme anti-ghosting