Abstract: The present invention discloses a multi-function interface card. The multi-function interface card comprises a central processor mounted on a PCB (printed circuits board). A communication module is coupled to the central processor. An arbitrator is coupled to the central processor. An interface is coupled to the arbitrator to act as I/O for exchanging signal between the multi-function interface card and an external device. A plurality of switches are included, wherein each one of the plurality of switches is coupled to the arbitrator respectively. A plurality of controllers are included, wherein each one of the plurality of controllers is coupled to corresponding one of the plurality of switches respectively. The arbitrator is capable of recognizing a configuration access from an input signal received by the arbitrator and to determine which one switch of the plurality of switches is turned off thereby allowing the corresponding function controller to respond to the data access.