The difference between PCIe x1, x4, x8, x16 and x32

pcie 8x slot   Dan pcie slot qrelease

In the case of the OP's MOBO, the blue PCI-e slot on the top is assigned x16 The two little slots under it are x1 each The black slot is x4,

Btw, I'm pretty sure it's on the correct slot and I do not have any NVMe on the M2_1 slot or any at all for that matter  On PCIe X1, X4 and X16 slots, the first 18 pins are all wired the same, so as long as the PCI-Express card fits in the PCI-Express slot, it

guns and roses slot In the case of the OP's MOBO, the blue PCI-e slot on the top is assigned x16 The two little slots under it are x1 each The black slot is x4, It means it's a physical x16 slot and will take any size PCIe card, but it's only wired to x8