A system and method for allocating bandwidth in a network node are described. The system includes an identification device configured to communicate identification information relating to an associated component, a reader device configured to substantially autonomously receive the identification information from the identification device, and means for identifying the locations of the identification devices. A plurality of second reference marks is placed on a second layer mask which is used to form the second layer pattern and in which one second reference mark is matched with a first reference mark having the same coordinates. The plug is removably insertable within the audio jack such that the battery of the separate electronic device is electrically connected to the input of the high impedance input amplifier.