A system can include a processor; memory operatively coupled to the processor; a first display unit that includes a first planar display operatively coupled to the processor; a second display unit that includes a second planar display; and a mechanism that selectively transitions the first planar display and the second planar display between a stacked orientation and a side-by-side orientation that forms a planar extended display operatively coupled to the processor. Various other apparatuses, systems, methods, etc., are also disclosed.