What are PCIe x1 Slots Used For? - PC Guide 101
NVMe drives can generally be used in M.2 slots, but it is important to ensure compatibility with the specific M.2 slot on your motherboard.
Adding NVMe PCIe M.2 SSD into PCI-E X1 Slot - Storage Devices ...
On a motherboard with the x570 chipset, all of the M.2 slots (connected to CPU and motherboard chipset) would conform to the PCIe v4.0 and thus support the 4th Gen NVMe SSDs to their max potential.
pci express - PCIe Gen3 x4 SSD disk combatible on PCIe x8 old ...
For the most part, installing a PCIe NVMe SSD into the M.2 slot on an Intel motherboard will result in you obtaining full speed thanks to the fact that where ...