The 36-position basic bandwidth (x1) version supports a single PCI Express Lane and can be used as a direct replacement for a conventional PCI connector in desktop PCs. The higher bandwidth 4-lane and 8-lane connectors are intended for server I/O applications.
The 164-lane position x16 connector provides twice the graphics bandwidth of AGP 8x in each direction and is the ideal replacement for the AGP (Accelerated Graphics Port) connector for graphics I/O. All connectors fully support PCI Express signal and power requirements, as well as the auxiliary signals at the interface between the system board and add-in card.