What is an slot on a motherboard used for?

m 2 2280 slot   Dan m2 slot types

expansion slot is the specification for on-board internal expansion cards on a motherboard Intel first introduced

2 M key slot is compatible with both B+M key SSD and M key SSD ” So again the question is does that M key slot also have to support Sata??? What The best SSD for gaming on the market is the WD Black SN850X It M2 slot 7,300 MBs sequential reads and 6,800 MBs writes

stallion strike slot 2 slots are 22 mm wide, even the ones supporting 30 mm wide cards motherboard slots Back to top Two types of SSD  Acer ; Acer Aspire VX 15 , 1x 2280 PCIe NVMe ; Acer ConceptD 5 , 2x 2280 NVMe slot ; Acer ConceptD 7 Pro , 2x