what are m.2 slots: Checking SSD Compatibility with Your Motherboard. M.2 expansion slots: what is socket 1, Key A and how many sl... ... . Will upgrading your computer's RAM boost its speed?.
Important features for a new "normal" consumer board these days are M.
2 slots for PCIe storage because inferior 2.5"/SATA drives are now more expensive than superior M.2 NVMe drives.