What is the purpose of the expansion slot?

What Is an Expansion Slot? An expansion slot is a hardware interface on a computer's motherboard that allows additional components to be added

A receptacle inside a computer or other electronic system that accepts a printed circuit board The number of slots determines future expansion See PC data

what is an m2 slot They give added capabilities to computer systems beyond the base specifications PCIe slots and cards An expansion card is an internal card

what slot machines payout the most often A hardware unit that connects to a computer and provides expansion slots and sometimes other capabilities Expansion chassis began to appear