pci slotLearn about the different types of slots on the motherboard, such as PCI, PCIe, PCI-X, AGP, ISA, EISA, VESA, RAM, AMR and CNR. Find out their purposes, features,PCIe is an interface standard for connecting hh-speed components to your PC. Learn about the different types, generations and features of PCIe slots and cards, from PCIe 1.0 to PCIe 6.0.