What is an slot on a motherboard used for?

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

This PC has an slot It seems like NVMe And PC has a PCI The processor does not matter

m2 slot screw 2 slots at the same time On regular office and gaming PC motherboards, the slot closest to the CPU will most often be the one that has the highest

m2 expansion slot In order to connect to your PC, a conventional SSD often needs an slot slots are more uncommon than SATA slots, the conventional hard drive slots,