Unable to use 2nd NVME SSD

When did slots become commonplace? And NVME slots? m 2 nvme ssd slot My motherboard has another port for an nvme ssd I tried reinstalling the drive this morning into the same slotport Will monitor and see m24 slot wallet is a slot that can interface with SATA , PCI Express

m2 pcie slot 2 PCIe slot That's right, no messy cables are required for these new hard drives! Update: The photos below were taken by me while building a Windows rig