An interface component for insertion in a certain-sized connection box placed for another component such as a switch or other electrical mechanism. The interface component may bring in new capabilities plus maintain the capabilities of the removed component. The box need not be removed, or if the boxed is removed the structure or space encompassing the box need not be enlarged. Further, no new wiring is necessarily needed. This placement or substitution may be particularly applicable to rooms of hotels, motels, and other similar facilities. Neither time nor expense of redoing structure to hold a larger box or provide more space or wiring is needed. In many cases, there is not adequate space to add components for providing additional capabilities to a room.