Abstract: An electrical component support structure which supports both standard-conforming and non-standard-conforming electrical components has fixed support structure which supports movable intermediate support structure to which electronic components conforming to a predefined width standards are mounted. The intermediate support structure can be located at a number of locations within the fixed support structure to provide for various arrangements of conforming electronic components and can be configured to support components conforming to more than one predefined standard Electronic components not conforming to a predefined standard are supported on shelves mounted to the fixed support structure, which shelves can be mounted in a number of positions. The conforming telecommunication component includes a mounting panel having first and second vertical edges and panel mounting holes located adjacent each of the first and second vertical side edges.