Amazon.com: Atneway, 4 Pin Molex to 6 Pin PCI Express PCIE Adapter Power Cables, 4 Pin Male to 6 Pin PCI Express PCIE Female Graphics Card Power Adapter Cable (1Pack18cm) : Electronics
4" 4 Pin Molex to 6 Pin PCI-Express PCIE Video Card Power Adapter Converter Cable - NWCA Inc.
Adapter 2x Molex/PCI-Express 8-pin AK-CA-29
StarTech.com 6in LP4 to 8 Pin PCI Express Video Card Power Cable Adapter - 8 pin internal power (M) - 4 pin ATX12V (M) - 15.2 cm - Convert a Standard LP4