What is PCIe (Peripheral Component Interconnect Express)?
P27F Series (x16/x8/x4/x1) Flexible x16 PCI Express Extender
PCIe 3.0 x8 vs. x16: Does It Impact GPU Performance? - YouTube
Can this configuration work on the PCIE slots? : r/pcmasterrace
PCIEX16E-844S | PCIe x16 edge connector to one PCIe x8 and two PCIe x4 Slots riser cable | x16 to x8 and x4 PCIe bifurcation riser cable | PCIEX16E-844S
PCIe 3.0 x8 vs. x16: Does It Impact GPU Performance? - YouTube