motherboard m2 slot

1 x NVMe M. bar 777 slot 2 Slot expansion card = PCIe x4 slot on motherboard 2 x NVMe M 2 slot expansion card = PCIe x8 slot on motherboard 4 x NVMe M 2 slot expansion card = PCIe x16 slot on motherboard Note that on the majority of the motherboards, the x4 and x8 slots have a physical dimension of an x16 slot