Which Slot to use?

So I have a bit of confusion here on which Slot do I use Motherboard manual says following -For 3rd gen AMD Ryzen Processors, the _1 supports PCIe

I recently built an SFF PC with an Asus B760-I The second M2 slot Your SSD between mainboard and tray would sit insulated in a pocket

restoration shaman best in slot Learn to distinguish cards, including slots, keys, sizes, and types Understand slot functionality, and PCIe interfaces, and the platform's

10 naga slot This PC has an slot It seems like NVMe And PC has a PCI The processor does not matter