With a new lamp beads, better brightness, color temperature correction. The new LED constant current step-up board, supports 12-30V wide voltage input. 3 1 groups are free to crop! 15-24 inch universal versatile. Adjustable brightness. Driver board size:7x2cm Input:DC 12-30V size:355x4mm Colour:blue Material:Fiberglass panels Installation: If your monitor is using a inverter, then this kit replace the inveter to plug into the driver board ; If your monitor is a high-voltage integrated power supply board, then: the board energized, find 12V (capacitance), and then unplug the power supply,use a multimeter to find and 12V (capacitance) Disconnect original connecting the negative terminal, the board received three line: 12V, ON, GND, the 12v of the inverter connect with 12v positive electrode of hign-voltage intergrated power supply board,GND is connected with the negative electrode, ON connect with the ON / OFF. In simple terms, tThe original high voltage power supply is disconnected,instead of the inverter, In the original high-pressure front to take power. Package Contents: 2x 1x Driver board 1x cable Only the above package content, other products are not included. Note: Light 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.