What is an slot on a motherboard used for?

What is an slot on a motherboard used for? m 2 ssd motherboard slot , I'll go step by step on how to add an to an occupied one-slot setup Product Links m2 pcie 40 in 30 slot The z390 Aorus Master comes with three slots, one M2M, one M2A, and one M2P, if i buy two Samsung Evo 970 NVME SSD cards,

m2 pcie 40 in 30 slot 2 PCIe drive is only compatible with the slot on the motherboard The slot supports different cards However, the SATA SSDs can use both

m2 sata slot motherboard Do not overtighten the screw insert the SSD Reassemble your system After the SSD is securely seated in the slot, put your computer back 2 PCIe drive is only compatible with the slot on the motherboard The slot supports different cards However, the SATA SSDs can use both