Light effect mode: 1.Luminous characteristics: LED color backlight, more cool at night. 2. The keyboard backlight function is controlled as follows: FN+ESC button for light switching off function. 3. Can be configured into different kinds of language versions according to customer needs. 4. The keyboard supports running on Win 2000, Win XP, Win ME, Vista, Win7, Win8, Androed, Linux, Apple and other operating systems. FN combination function: Support multimedia function keys, the operation is as follows: (1).FN+F1 button: music player (2).FN+F2 key: volume decrement (3).FN+F3 button: increased decrement (4).FN+F4 button: mute (5).FN+F5 key: pause Product parameters: Name: One-handed gaming keyboard Product model: V100 Product interface: USB 2.0 Press the number of keys: 35 keys Key life: 20 million times Product line length: 1.6m Flash ROM: 32 bytes EEPROM: Built-in 2K bytes Operating voltage : VDD = 3.3V - 5.5V Working current: 100mA Ambient temperature: - 40C - + 85C Programming temperature: 0C - + 85C Product net weight: 350g Product size: 26*18*4cm Package Weight:415g Package Size:26*19*4cm Precautions If the keyboard does not work properly, check if the computer's PS/2 or USB. connector is normal or the keyboard cable is broken. Avoid using the mouse and keyboard in an environment with strong sunlight, overheating or severe dust.