We 'lectronics types tend to think of that as ~ ya get a new piece o'equipment and see if it does what you want. After a while you (maybe remove the handles? maybe not) stick it in a square hole and screw it to the rack.
Somehow.. (and while yer behavior might well be punishable by a session on someone's rack - by a guy in a black hood) .. I'm havin trouble..
visualizin yer er installation :-\ufffd
Dear Lord - please protect us from the &*$%#$ Literalists..