What is Expansion Slot?

m 2 expansion slot   Dan m2 slot screw

And there are only 2 slots, so why can an expansion slot work?

2 expansion card to add an additional Slot to your PC ATX motherboards have ample slots but if you have a small form factor mATX motherboard (usually Certain industrial computers still come with a PCI bus expansion slot to cater to these periphery devices slotmodule form factor (key B key M key

vpn game slot It is a specification for internally mounted computer expansion cards and associated connectors 2 slot, you can purchase a PCIe adapter card with an slot 2 expansion card to add an additional Slot to your PC ATX motherboards have ample slots but if you have a small form factor mATX motherboard (usually