Connector A : PCIe 6 Pin Female. Connector B : GPU 8 Pin Male.PCI Express power cable 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 SAVER video card to power supply cable provides an option for connecting a power supply without an 8 pin PCIe connection for GPU power 8 Pin PCIe to 6 Pin PCIe male to female adapter cable provides a convenient solution for supplying video graphics card power with an 8 pin connector for GPU cards that require more power