PCI EXPRESS POWER CABLE adapter connects a PCIe video card with an 8 pin connector to a power supply with two spare L4 Molex power connections; Check that your PSU is rated to power the video graphics card PSU UPGRADE SAVER power cable provides an option for a power supply without a PCIe connection for GPU power; Dual Molex connectors are designed to connect to separate rails on different Molex daisy chains to power a PCIe video graphics card from an older PSU 8 PIN PCIe to DUAL MOLEX female to male cable provides a convenient solution for video graphics card power with two Molex connectors for GPU cards that require more power