Features: German original Cherry MX mechanical switches Partitioning show personality backlit light effect,and a total of nine stalls with backlight off,you can freely adjust for LED intensity Section 1 FPS local light:ESC/WASD/Left SHIFT/Left CTRL/Space bar Section 2 FPS local light:ESC/1234/QWER/ASDF/Space bar Section 3 60 percent local light:ESC/Primary keys Section 4 80 percent local light:84 keys Increasing the power-off and memory function,it can record the keyboard backlight settings before shutdown state. Dual IC process chip design,memory storage more powerful,function More stable New production process improvement backlit keycaps, feel better, beautiful and practical, while more wear-resistant and durable Compatible system: Windows 2000/XP/Vista/Windows 7 Notice : It is NOT fully compatible with Mac,it is fully compatible with Windows. Function Key Combination: Fn + F1 = Open "My computer" Fn + F2 = Open default web browser Fn + F3 = Open Calculator Fn + F4 = Open default media player Fn + F5 = Open last song Fn + F6 = Open next song Fn + F7 = Play/Pause Fn + F8 = Stop Fn + F9 = Mute Fn + F10 = voice lower Fn + F11 = voice louder Fn + F12 = Lock Win Fn + Up = Backlight brighter Fn + Down = Backlight dimmer Fn + Left = Partition combination switch Fn + Right = Breathing light combination switch Package Content: 1x New KeyCool 84 Keys Backlit Mechanical Gaming keyboard Cherry MX Blue switches Blue LED 1x Key puller 1x USB cable 1x USB to PS/2 adapter 5x Keyboard clasps 1x Anti-dust cover