The Express Power Extension Cable extends the reach of your ATX12V power supply PCIe power connector BY 30cm, making it easier to power your PCI Express based video card without having to stretch or add strain to the PCI Express power connector from the power supply. 
Extend your cable length from your Power Supply to your PCI Express graphics cardReduces strain and eliminates stress on the PCIe video card power supply connection 
Connector A 1 - PCI Express Power (8 pin) FemaleConnector B 1 - PCI Express Power (8 pin) Male