Connect a standard 6-pin PCI Express power connection on the Power Supply to 8-pin ATI and NVidia video cards. 6 inches PCI Express 6 pin to 8 pin Power Adapter Cable. An economic solution that saves you from upgrading your power supply. Connect a standard 6-pin PCI Express power connection provided by the computer power supply to ATI and NVidia video cards that require an 8 pin power connection The PCI Express 6 pin to 8 pin power adapter cable lets you connect a standard 6-pin PCI Express power connection provided by the computer power supply to ATI and NVidia video cards that require an 8 pin power connection. A cost-effective solution, the PCIe 6 pin to 8 pin power adapter eliminates the expense of upgrading a computer power supply for the sake of compatibility with a newer video card.