1. With power output indicator. 2. With module switch to turn off output 3. The output terminal can pass the maximum current. 4. With output protection fuse,four groups correspond to four road output. Each output channel has replaceable 5A fuse and corresponding ground connection with binding post easy to connect Provide quick access to the typical voltages needed including 3.3V, 5V, 12V and -12V. Compatible with the port: ATX (compatible with partial BTX type) The PIN number: 24 pin ; power indicator and power to control ideal to DIY low voltage power supply for developing physical computing projects (embedded systems) Colour:Blue Material:plastic Package Contents: 3 x ATX adapter board Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.