One embodiment provides a system, including: a module housing comprising a top, a bottom, and at least one lateral edge comprising a top side, a bottom side, and at least one lateral side; at least one display device element disposed at a lateral side of the module housing; and at least one display device operatively coupled to the at least one display device element; wherein the module housing is connectable to another module housing using at least one latch mechanism; wherein at least a portion of the latch mechanism is disposed at the bottom side of the module housing; and wherein at least another portion of the latch mechanism is disposed at the top side of the module housing. Other aspects are described and claimed.