are all m.2 slots the same
Check PCIe M.2 NVMe SSDs compatibility with your ...
Most of NVMe SSDs use the M.2 form factor, but not all M.2 slots support NVMe - some M.2 slots only support SATA-based SSDs, so it's better to check your motherboard’s manual to see which type of M.2 drives it supports.
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The slot that is the same on all three is the primary slot. Any additional slots are secondary and are intended to be used to hide other parts of the body as necessary.
Sự khác biệt giữa các loại khe cắm M2, kích thước và ...
My laptop has two M.2 slots -- one being a “M” key M.2 2280 and one “B” key M.2. The problem is I have two SSDs that are both "M" key.