Zippy BL-741 USB V.2.0 512 Color Gradation Illuminated Backlight Keyboard Slim and Innovative Look. ZIPPY Patented Precision Scissor-key Structure for the Key Module. Make user type comfortable and enjoy a quiet keystroke. Patented (Applying) LED Structure. Supreme brightness and less power consumption. Ergonomic Design with A Pair of Rubber-padded Foot Stands.