2 sets of light bars: 1 set of white light bar and 1 set of blue light bar Installation: If your monitor uses an inverter, this kit replaces the inverter to connect to the driver; If your monitor is a high-voltage integrated power supply, then: the board is powered, find 12V (capacitance) and then unplug the power supply, use a multimeter to find and 12V (capacitance) Disconnect the connection to the negative terminal, the board received three lines: 12V, ON, GND, 12V for the inverter connects with 12V positive electrode for high-voltage integrated power supply, GND is connected with the negative electrode, ON connects with ON/OFF. Simply put, the high-voltage power supply is disconnected, instead of the inverter, in the high-pressure front to take power. Long life, designed for monitors with a lifespan of 100,000 hours. Easy to install, use double-sided tape to attach to the LCD screen slot or paste elsewhere With new imported lamps, better brightness, color temperature correction. The new program LED constant current boost board supports 12–30V wide voltage input. 3 1 groups are free to crop 15–24 inch universal versatile. Adjustable brightness. Cross-flow board specifications: 7cm x 2cm (length x width) Constant flow board, also known as pressure plate Light bar specifications: 535mm x 4mm x 2mm (L x W x H) Input voltage: 10V ~ 30V wide voltage + DC 12–30V This product is the display light bar, high brightness, can not see directly LED particles close, high-density arrangement of imported light LED chip Color: White + blue Material: Fiberglass panels Package Contents: 4 x LED light bar 1 x adjustable constant current boost board 1 x 4P cable 1 x driver board 1 x 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 +/- 1–3 cm.