What is an slot on a motherboard used for?

If it's used on the PCIe motherboard interface, the Ultra M2 SSD can even support up to 16GBs bandwidth As the new Ultra slot

Thus the need to check your Mobo Specs on lanes Generally the OS Drive in the first Slot I was thinking about the

m2 slot 2-SSDs per mit dem Mainboard und haben so direkten Zugriff auf die PCIe-Lanes der Hauptplatine Diese PCIe-Lanes sind die Autobahn des Mainboards

m2 vs nvme slot SSD drives supported in the slots? They are basically the same slot for them, then it is compatible??? Because from what I've