Abstract: A Gen3 PCIe Riser consisting of four PCIe x16 slots, a PCIe switch, external power, a remote programming interface, and a PCIe edge connector. The PCIe switch is programmed to allow any PCIe device installed in a PCIe slot to communicate directly through the switch with another PCIe device installed in another PCIe slot on the Riser without using the processing power of a Central Processing Unit thereby increasing system efficiency. In alternative embodiments, two Gen3 PCIe Risers are cross-connected to allow for more direct communication between any PCIe devices installed in the system. External power is connected when the PCIe devices require more power than available from a standard PCIe slot. The external programming interface allows for the configuration of the PCIe switch to be modified to meet system demands.