2 Pcs Led Backlight Strip Kit: 1 Pcs 450mm & 1 Pcs 290mm For 1 monitor, 1 kit is enough. And so on. Make the monitor be brighter and now you can experience lifelike images. LED backlight strip sets can update for LCD monitor and the light can be dimmable. This LED backlight strip kit is a direct replacement for LCD Laptop screens that were originally equipped with a single CCFL backlight lamps inverter. Specifications: Light Color: White LED Board Input: 9-25V material: plastic White: LED Strip Size: 450mm*3mm*2mm / 17.7 inch * 0.12 inch * 0.08 inch (appr.) LED Board Size: 7cm*2cm*0.5cm / 2.75 inch * 0.79 inch * 0.20 inch (appr.) color: White Support: 20 inch Monitor LED board: Size: L*W*H:6.8cm*1cm*0.5cm Dimable, same function as before. Input,9-25V. Black: Support: 7 inch 9 inch 10 inch, 11 inch, 12 inch, 12 inch wide, 13 inch, 14 inch, 14 inch wide Monitor LED lamp bead: 75PCS LED(model:3014) LED Strip Size: 290mm*2mm*2mm / 11.4 inch * 0.08 inch * 0.08 inch(appr.) LED Board Size: 6.8cm*1cm*0.5cm / 2.68 inch * 0.39 inch * 0.20 inch (appr.) Colour: Black Package Contents: 1 * 290mm 57 led backlight LED strip 2 * 450mm led backlight LED strip 2 * Circuit board 2 * Power Cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.