The most widely used kinds are AGP (Accelerated Graphics Port), PCI (Peripheral Component Interconnect), PCIe (PCI Express), and, more recently, M.2 and U. Two positions. Users must be avitor hackaware of the distinct features, bandwidth capacities, and intended applications of each type in order to determine which slot is most appropriate for them. For example, PCI slots were frequently utilized for a variety of peripherals in older systems, but because of its greater speed and adaptability, PCIe has emerged as the industry standard for contemporary devices.