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.