One of the easiest mistakes to make when building or upgrading a PC is assuming that every M.2 slot on a motherboard is basically the same. After all, they all look nearly identical and take the same "gum stick-shaped" drives. Motherboard marketing pages love to list "4 x M.2" as though that number alone tells the whole story, but in practice, these slots can behave very differently.
You could have a perfectly healthy, high-end that performs well below expectations simply because
