The invention provides an interface device. The interface device is used for being connected with a connector. The device comprises an interface hole and a plurality of conductive units arranged in the interface hole in an array mode. Each conductive unit is telescopically arranged in the depth direction of the interface hole. When the connector is inserted, one part of the conductive units are pushed into the interface hole by the connector. Meanwhile, another part of the conductive units are correspondingly inserted into the connecting jacks of the connector, while the rest conductive unitsare kept in the initial state to form a support for the connector. The system further comprises a judging unit. The judging unit judges the type of the connector according to the position informationof the conductive units inserted into the conductor. Meanwhile, the judging unit distributes signals to conductive units inserted into the conductor according to the type of the connector. Due to theadoption of the above technical scheme, the interface device can be adapted to various types of connectors at the same time. Therefore, the number of external interfaces required to be configured by the same device is greatly reduced. In addition, due to the fact that various interface types are unified, the production cost is reduced.