Power Adapter Cable, 20-Pin Female to 24-Pin Male. Extend the length of your 24-pin power cable with this 3.95" extension. The female end will plug into your ATX power cable and the male end into your motherboard.This 24 pin extension is great for people who have power supplies that cannot reach the ATX connector on the motherboard. Bridge the gap between your PSU and your motherboard with this plug & Play 3.95 inch 24pin ATX power supply extension. This extension does what it's supposed to do and does it very well. With modern cases this is a big issue because cases use bottom mounting of the power supply or mount on the backside of the motherboard plate. With this extension you'll get additional length to extend that distance so that your PSU can be long enough to reach the ATX connector on the board.