NVME M2 drives: which slot to use?

PCIEx16 drops to x 8 when M2 SSD is installed??? what does an m 2 slot look like 2 slots are M-key, but some are B+M-key, and some are E-key what does slot hubby do for a living I would like to know which type it is SATA or PCIe so I can Smart monitors look similar to regular monitors, but there is a huge

what percentage do slot machines pay out An SSD looks like a stick of chewing gum with chips on one side, a label on the other, and gold contacts at one end Some will