Abstract: An electronic device includes a device housing. A monorail having a monorail body defining a first end and a second end separated from the first end along a major axis of the monorail body is mechanically coupled to a minor face of the device housing by a bridge member. A first electrical connector is positioned at the first end of the monorail body, while a second electrical connector positioned at the second end of the monorail body. The first electrical connector and the second electrical connector are of the same type. An attachment having a housing defining a monorail receiver with an aperture at a first end and a bounding wall at a second end includes an electrical connector situated within the monorail receiver at the bounding wall. The attachment can be coupled in two configurations to the monorail.