Amazon.com: StarTech.com 6in LP4 to 6 Pin PCI Express Video Card Power Cable Adapter - Power adapter - 4 pin internal power (M) to 6 pin PCIe power (M) - 6 in - LP4PCIEXADAP : Electronics
Amazon.com: OwlTree PCI-e 6 Pin Male to Molex 4 Pin 1 to 4X Molex Power Supply Cable Port Multiplier for Corsair Modular RMX Series RM1000x RM850x RM750X RM650x RM550x : Electronics