Instruction to connect the controller board to the LCD:1. Take away the old inverter and old LVDS cable from the LCD panel.2. Connect the new inverter and LVDS cable to your LCD panel.3. Connect controller board with PC by VGA cable.4. Input power of 12V,4A. ( Please don"t set the voltage jumper on the controller board wrongly, please don"t connect the lvds cable wrongly, wrong setting of the voltage and wrong connection of the lvds cable can get your lcd burnt, if you are not sure, please feel free to contact us before inputting power. )