Peripheral Component Interconnect (PCI)

pci slotWhat is a PCIe card? A PCIe card, also known as a PCI Express card, is an expansion card that connects to a computer's motherboard using a PCIe slot.Learn what a PCI slot is, how it works, and what devices can be plugged into it. Compare PCI slots with PCIe slots and other types of expansion slots, and find out how many