Why use a 20 pin connector? 20 Pin atx connectors help you link your power supply to your motherboard connections. Our 20pin ATX power supply extension cables let your power reach further for complicated PC builds. Buy a 20 pin to 20 pin atx adapter and p If you need to adapt your power connection in your computer, OutletPC has all the 20-pin to 20-pin power adapters for your needs! Choose from our selection of 20-pin to 20-pin power adapters to make your new computer build or upgrade work like a charm.