A method of refurbishing a robotic surgical arm that has an interface pin for communicating with a control system and is electrically connected through a conductor to a memory device for storing data associated with the robotic surgical arm, the method includes providing a circuit having a first interface and a second interface. The circuit recognizes at least one request from the first interface and the circuit responds directly to the at least one of the requests over the first interface. The circuit forwards at least one other request from the first interface to the second interface and the circuit forwards a response thereof from second interface back to the first interface. The method includes disconnecting the conductor and inserting the circuit such that the first interface is electrically interfaced to the interface pin and the second interface is electrically interfaced to the memory device.
