A support structure for at least two flat panel display devices that permits adjustment of the at least two display devices in or about one or more axes, and a display system including such support structure and display devices while maintaining a constant space between the display devices in various configurations, alignments and orientations of the display devices. Such support structure, as provided in accordance with embodiments of the invention, provides for configuration of the at least two display devices, in a plurality of alignments in which fronts of the two display devices are generally aligned in a plane, for viewing together. Embodiments of the support structure provide for the two display devices to be positioned in a landscape and/or portrait configuration. Embodiments of the support structure provide for repositioning the display devices between horizontally and vertically-aligned configurations without disassembling the support structure itself and without disassembling either or both of the two display devices from the support structure.