R720 PCIe Limit?

Optimal PCIe Bifurcation Configuration

PCI Express slots on the motherboard can be wider then the number of lanes connected For example a motherboard can have x8 slot with only x1

pcie 4 slot A single-slot graphics card is about 18mm in width and comes with a single bracket Single-slot graphics cards also come in low profile form

pcie slot cover PCI Express slots on the motherboard can be wider then the number of lanes connected For example a motherboard can have x8 slot with only x1