1-2pcs PCI-E 6 Pin to dual 8 Pin (6+2)Power Splitter Cable for PCIE PCI Express

It's a good choice when you don't have enough PCIe ports for Graphic card and PCIe riser. Compatible with 6 Pin & 8 Pin Graphic Card (Waring ： it's NOT used for CPU 8pin) ，and PCIe riser. 6 PIN to 2 X 8 (6+2) PIN: One end is 8 Pin female port, the other end is 2 X 8(6+2) Pin male port.

eBay