Dell Inspiron 23 5348 & OptiPlex 9030 AIO Inverter Board, also identified by part numbers 5K7DT and 05K7DT, is a component designed for specific Dell all-in-one (AIO) desktop models. This inverter board is responsible for supplying power to the backlight of the LCD display panel, enabling it to produce the necessary illumination for the screen to be visible.