With new lamp beads, better brightness, color temperature correction. The new program 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: 7 x 2 cm Input: DC 12-30V LED strip size: 355 x 4 mm Color: Blue Material: Fiberglass panels Installation: If your monitor uses an inverter, this kit replaces the inverter to connect to the driver board; If your monitor is a high-voltage integrated power supply board, then: the board is powered on, find 12V (capacitance), Then disconnect the power supply, use a multimeter to find and 12V (capacitance) Disconnect the original connection the negative terminal, the board received three lines: 12V, ON, GND, 12V of the inverter is connected to the 12V positive electrode of the high-voltage integrated power supply On the board, the ground (GND) is connected to the negative terminal, while the ON terminal is connected to the ON/OFF terminal. In other words, the original high-voltage power supply is disconnected, instead of the inverter, and the original high-voltage terminal is powered. Package contents: 2 x LED strips, 1 x driver board, 1 x cable. Only the above package content; other products are not included. Note: The actual color of the item may differ slightly from the picture due to the difference in light and screen setting. An error margin of 1 to 3 cm is possible.