PCIe NVMe SSD on PCIe slot-Worth it?

A variety of PCIe and PCIe RAID adapters are available OCP slot with PCIe Gen 4 x16 interface ; Additional PCIe

NVMe SSD which is a PCIe Gen x4, NVMe interface My TUF GAMING Z690-PLUS WIFI D4 mobo I think only has PCIe x4 slots would I be able to

nvme vs m2 slot difference It looks like there are different PCIe specs Dell's slot can be used for Intel Optane memory or for a bootable SSD apparently PCIe now

nvme slot vs m2 Da kann Slot 1 PCIe und und Slot 2 nur PCIe PCIe Nvme SSD wie anbinden?