6 PIN PCIe to 8 PIN PCIe adapter connects a PCIe video card with an 8 pin PCIe connection to a power supply with only 6 pin PCIe power connections; Check that your PSU is rated to power the video graphics card PSU UPGRADE 6 pin to 8 pin adapter cable provides an option for connecting a power supply without an 8 pin PCIe connection for GPU power 8 PIN to 6 PIN PCIe adapter cable provides a convenient solution for supplying video graphics card power with an 8 pin connector for GPU cards that require more power