What is an slot on a motherboard used for?

2 specification actually includes 12 key IDs on the module card and socket interface, but most are not yet in use, and by and large most expansion cards,

Socket converter module NGFF type M-Key to host PCIe-NVMe SATA 80 mm SATA Ideal for connecting hard drives HDD or SDD to an connection socket

m2 slot screw Generally speaking a B+M key does not work in a M key slot You must use a B+M female slot However, you can plug b or m key into

m24 slot SSDs come in various sizes and shapes, but the most common types of slots are M key and B+M key While both