Install PCIe cards in your Mac Pro

Motherboards with a good number of PCIe slots pcie slot length PCIe slots are used to connect graphics cards, sound cards, other interface cards and some pcie 40 in pcie 30 slot Two single-wide full-length x8 gen4 slots One single-wide half-length x4 gen3 slot preconfigured with the Apple IO card The Apple Thunderbolt

pcie slot x16 1) Mechanical Lane requirement: the type of PCIe slot required by the card “x8 x16”