brand new and high quality Product Interface: ATX24PIN power When the main power plug in to the interface is detected,Manual switch is invalid,Need to unplug the test line, a manual switch machine to work properly. Product Usage: Now that the computer useful for the dual power, in order to make the connected equipment and the main power switch synchronous machine, this adapter plate can also help you, you can achieve more than double the power supply switch simultaneously. Product Features: A: As long as enough power interface can be implemented on 2 or more while the power switch. B: high-performance low-power transistor circuits. C: When the synchronization is not required, you can manually switch the sub power. D: with power indication LED lights up when the sub-power start. E: with big 4PIN output, with wire, can transfer a variety of power supply interface, full use of the power efficiency. Size:(L*for W)10.20*4.80cm/4.02"*1.89" cable length:20.00cm/7.87" Quantity:1Set