Next he hand-fabricated Iron Man's chest plate from 00.80 polystyrene and mounted the Arc Reactor in its circular seat. The combo was then mounted on the left side of the case against an image of Stark using the helmet's interface. The panel on the right side includes a portion of Captain America's shield on the inside, paying homage to the brief references to Steve Rogers in the two Iron Man movies.
The shield was constructed from 00.80 ABS plastic and given a custom painted effect of battle fatigue. "The ending result on the right side panel was a perfect contrast to the overall theme. In the lower right corner of the panel is an external molex power hub that Ron also built from scratch," Case Mod Blog reports.
Source: Toms Hardware