Using a PCIe x1 card in a PCIe x16 slot

Using a PCIe x1 card in a PCIe x16 slot can i put pcie x4 in x16 slot When we bumped up to the newest X299 with Intel i9-7900X CPU, we were able to get the SSD7101A-1 working at X16 from PCIe slot 3 with a single can i put a gen 4 m2 in a gen 3 slot Expansion slots: 1x PCIe x16, 1x PCIe x4, 1x PCIe x1 Video ports: 1x DisplayPort 1x HDMI USB: Up to 1x USB Gen2x2

can i put a gen 4 m2 in a gen 3 slot Yes, you can put a PCIe X16 card in a X8 slot Electrically, there is no difference between the two as they both receive the same 75 W of power

can i use gen 4 ssd on gen 3 slot If you have a board that does not do CrossfireSLI, then sticking a card into another slot will have no bearing on the first You could also get an enthusiast 7PCIe slots Up to300Wauxiliary power One PCIe x4 gen 3 Apple IO card Four PCIe x8 gen 4 Two single height Two double height Two PCIe x16 gen 4 Double