The LED Backlight Advantage: High Brightness LED backlight up to 700 nits. Improved Dynamic Contrast Ratio up to 1000: 1. Improved Color Gamut for more Lifelike Images. High shock/Vibration resistant.Low Heat Generation.Environmental advantage. LED Backlight Lifespan: As they are a solid state semiconductor device, LED has a longer lifespan typically lasting over 100,000 hours. Being solid state devices, the LED will perform exactly as when they were manufactured as opposed to the CCFL which loses light output continuously over their life up to 50%. This kit is a direct replacement for Laptop screens that were originally equipped with a single CCFL backlight lamps. By upgrading to this high brightness LED backlight, the luminance of white could reach as high as 700 nits and the luminance contrast ratio could reach as high as 1000: 1. Now, you can experience lifelike images. LED strip: size: L/W/H: 533mm*4mm*2mm(super thiner ,easy to fit more panels),Can be cut by every 3 lamps as a group Support 15inch to 23inch: 15inch,17inch,19inch,19inch wide,20inch,22inch wide 23.6inch LED board: size: L/W: 7cm*2cm Dimmable, same function as before input: 9-30V colour: photo colour Material: plastic Attention: Do not provide technical support .You must know how to use it.If not, Think twice about your order.Thanks! Package Contents: 4 * LED board 8 * LED strips 4 * Cable