The benchtop power board kit was created to provide quick access to the typical voltages needed when developing physical computing projects (embedded systems). With power light and power switch. Provide quick access to the typical voltages needed including 3.3V, 5V, 12V and -12V Each output channel has replaceable 5A fuse and corresponding ground connection with binding post easy to connect On-board standard 24pin ATX port, power indicator and power switch easy to control ideal to DIY low voltage power supply for developing physical computing projects (embedded systems),If the power supply is a 20PIN port, when the other port is not 24PIN, the socket is inserted from the dot mark on the circuit board Compatible port: ATX (compatible with some BTX types) Number of PINs: 24pin switch: yes Number of output groups: four groups of different voltages +12V to GND +12V is positive GNG is negative voltage DC12V +12V to GND GND is positive -12V is negative voltage DC12V +12V to -12V +12V is positive -12V is negative voltage DC24V Note: -12V cannot be loaded, it is just a logic point provided by the motherboard, usually only about 300MA Different batches may cause differences in label printing, which will not affect the use Colour:Photo Color Material:plastic Package Contents: 1 x Desktop Power ATX Adapter Board 1 x Case 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.