PCIe x8 Gen3 Quad Port Cable Adapter - One Stop Systems
ONE STOP SYSTEMS PCIe 3.0 x8 Dual-Port OSS-PCIE-HIB38-X8-DUAL
Amazon.com: ADT-LINK PCIe X8 to X8 Adapter Cable for Graphics Video Card PCI Express Extender PCIe X8 to PCIe X8 Slot Extension Cable for 1U 2U Server (80CM) : Electronics
P27F Series (x16/x8/x4/x1) Flexible x16 PCI Express Extender