Motherboard Graphics Adapter 6 Pin to 8 Pin PCI Express to 2 x PCIe 8 (6+2) Pin Graphics Card PCI-e GPU VGA Y Splitter Hub Power Cable GPU to GPU 5 Pack :
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