Definition: expansion port -

Function of expansion slots in a computer case? : rbuildapc expansion slot function Peripheral Component Interconnect ; PCI Local Bus Three 5-volt 32-bit PCI expansion slots on a motherboard ; PCI Local Bus Three 5- expansion slot types An expansion slot on a motherboard is used for an expansion card, which enables a device that is not on the motherboard to communicate with the CPU

expansion slot definition Either it's a PCI or PCIe The only reason that motherboard could have an AGP slot, is if the motherboard is custom built with that function in