1 port MCIO 8i (74pin), high quality Amphenol SMT slot. ^^ PCIe 5.0 X8, Gen5, 85Ohm PCB, optimal traces. ^^ Lane mode needs to match your BIOS setting! This is NOT a PCIe switch. If both CPU & BIOS support bifurcated, this card can support below application: 2 Port NVMe SSD; PCIe X4X4 devices; PCIe X8 devices. Otherwise this card can only support PCIe link width of one device.
^^ Operating system support: Windows/ Free BSD/Linux/Redhat. ^^ With a low-profile bracket & a full-height bracket inside.