PCIEX16D03 | PCIe x16 to two PCIe x8 Slots Expansion Board | GPU Docking | GPUs Docking
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
All Types Of PCIe Slots Explained & Compared
Types of PCIe Slots/ PCle Lanes - ElectronicsHub
Can this configuration work on the PCIE slots? : r/pcmasterrace