Hp z640 NVMe PCIe Crucial card on PCIe expansion car

The lower slot on the Asrock board is using one of the SATA lanes So you won't get any speed advantage PCIe pastedImage_ SATA 3 SSD

The card physically has an X4 interface, so it could be plugged into an X4, X8, or X16 slot It can still physically only access 4 lanes (else

m2 slot screw Kinda odd he spent nearly 4 minutes talking about the difference between Gen 3 and Gen 4

m2 expansion slot Biostar ; 1, 1 x AMD Socket AM4 CPU ; 2, 4 x DIMM DDR4-4933+ ; 3, 4 x SATA III Connectors ; 4, 1 x PCIe x4 Slots ; 5, 1 x PCIe x4 Slots