Maximum support 1800W power supply. Ounce Copper PCB, solid capacitor filter, 21 of 2 x 3 Pin ATX output. Suitable for a variety of server power supply bare board accessories, you can also choose adding 21pcs output wires. The LED voltage display can display the voltage of the main PSU in real time. The floppy drive 4PIN is connected to the main power supply and can be switched on and off synchronously. Press the white button to turn on the power switch. (There are toggle switches and buttons for selection) When the power cord is plugged in and the power switch is pressed, the three-color light LED flashes, and the LED display shows the voltage.