Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot?

Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot? m 2 gen 4 in gen 3 slot I know I'm replying to an old comment, but maybe someone else sees this I recently got a Gen 4 SSD while still having a Gen 3 motherboard m2 slot Best Prime Day Solid-State Drive Deals This Week* · Samsung 990 Pro 2TB NVMe Gen4 Solid-State Drive — $ · Crucial P3 Plus 2TB M

m2 slot As mentioned above, a single PCIe slot can have x1, x2, x4, x8, or x16 lanes For example, PCIe x8 refers to a Gen 4 expansion cardslot

m2 slot types 1x SSD slot , 1x SSD Combo (NVMe PCIe Gen3 1x 2280 NVMe Gen 3 slot + 1x 2280 Gen 4 ; 1x 2280 NVMe Gen slot) In fact I've even successfully used a x4 adapter advertised as PCIe to run a Gen 4 drive at full speed in a PCIe slot: WD