Genius GX-Gaming Imperator Pro Expert Gaming Keyboard with Backlit Illumination (GX-GAMING IMPERATOR PRO) Full speed professional gaming keyboard Brightness switch: Four levels of light brightness 33%/66%/100%/ OFF Full color 16M RGB for backlight Two USB ports for USB peripherals Six programmable macro keys - assign up to 18 macros On board memory chip prevents command bottleneck Palm rest for superb gaming comfort