What Should to Do With Extra PCIe Slots?

All consumer boards only have a single electrical x16 slot Some of the more expensive boards have the ability to bifurcate to two

Thunderbolt 3 Host Connection · 1 x PCIe x16 Expansion Slot · Supports Full-Size, Double Wide GPU · 650W Power Supply

pciex16 slot configuration expansion slots found on a computer's motherboard However, a PCIe card slotted into a PCIe slot will run at the lowest denomination

pcie slot configuration gen1 gen2 gen3 The PCIx2 + PCIex2 Expansion Box is is designed to expand two extra PCI and PCIe slots from the PCI Express card slot of your Desktop, Workstation, or Server