Naki World Inc Slim Gaming Keyboard Black Compact Size Backlight Slim USB Gaming Keyboard Allow FPS (First PersonShooting) gamers to press 11 keys simultaneously.Orange LED backlight with ON/OFF switch for gamers to use at night. Compact size with number pad; space saving. Ultra Slim Keycap 3 LED indicator: Num Lock Caps Lock Scroll Lock SYSTEM: MicrosoftWindows 9ME, 2000, XP, Vista ? OS.