Classic charming blue LED backlight: customize multiple illuminated light effects with static and dynamic, supports about 20 kinds backlight modes, press Fn + Ins/ Home/ PgUp/ Del/ End/ PgDn/ ScrLK to switch , FN + / control backlight brightness, FN + -_ / =+ control backlight speed. Full anti-ghosting keyboard: all 87 keys are no conflict, allow multiple keys to work simultaneously with high speed for a reliable connection, have 12 multimedia keyboard, great for gamer, typist, programmer, writer etc. Extensive Compatibility: This Mechanical keyboards use USB 2.0 connector making it compatible with Windows (2000, XP, ME, Vista, 7, 8), Linux and Mac, plug and play, no drivers or software required. Mechanical Keyboard with Blue Switch: pressing the switch makes loud click sound, crisp paragraph feeling, excellent input feeling, strong mechanical feeling and long service life, providing precise tactile feedback for gaming and typing Classic black mash up 75% layout,