Case hard connection structure based on VPX rear IO board

According to the case hard connection structure based on the VPX rear IO board provided by the utility model, the rear IO board of the exchange slot position is used as an adapter board, and a specialadapter slot position for internal interconnection is not designed, so that the number of modules installed in a limited space is increased, and the problems of unstable connection stability, poor impedance continuity and difficult installation and maintenance caused by a cable interconnection mode can also be avoided; a modular design is adopted, so that the installation difficulty is reduced; alarge number of network differential signals which need to be externally connected are directly led out from the rear IO board and are not subjected to any wiring processing on the backboard, so thatthe quality of the provided network signals is better; flexibly designing the size of the rear IO board according to the size of the equipment to complete internal interconnection; a standard VPX connector is used for hard con