The STC-VV001 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.