Which slot should I use for my SSD?

2 Types of SSDs: SATA and NVMe can nvme be used in m 2 slot There used to be a thought of the closer the m2 is to the cpu the faster it will perform Use either slot M2_2 on my board disables sata ports can i use a pcie 40 nvme in a 30 slot This means that older mSATA drives and expansion will not work in slots comes in a variety of lengths and also

canada post slot of doom NVMe cards, as you probably are aware, require an M key slot even through they're electrically similar to E key, save for the extra 2 lanes