expansion slots on motherboard: What are PCIe Slots and Their Uses? - Beginners Guide. PC/104 - Wikipedia. 5 Methods on How to Tell If a PCIe Slot is Bad: Step-By-Step.
PCI Express uses physical
slots to interconnect the expansion cards to the motherboard. The common
PCI Express slots we see on motherboards are PCIe x1, PCIe x4, PCIe x8, and PCIe x16.
Under the general terms, PCI Express is used for the representation of the
expansion slots on the motherboard of your computing device – whether PC or Laptop.
The 'x16' on the expansion slots is the number of PCIe channels on that
slot...however the motherboard will also have a maximum number of channels to allocate ...