An arrangement includes: a module insertable into a housing or removable from a housing; and a slide-in compartment for receiving the module. The module is reversibly removable from the slide-in compartment. At least one side wall and/or a compartment rear wall and/or a compartment base of the slide-in compartment in an inserted state of the module forms or form a side wall and/or rear wall and/or a base wall and/or a roof of at least one module.