Abstract: The present invention is directed to a removable cage for a computer chassis assembly. Such cage is comprised of a frame. The frame includes a top, a bottom and two sides. In an exemplary embodiment, a midplane is coupled to the frame for providing a place to mount at least one disk drive. The midplane may include a midplane cover plate. Such plate provides protection to the midplane upon removal and insertion of the midplane. In an exemplary embodiment, the midplane cover plate is operationally coupled to the midplane which is in turn coupled to the frame via tooling pins. Finally, a plurality of fasteners are coupled to the frame for attaching the frame to the midplane and computer chassis assembly. The fasteners align and mount the frame including the midplane to the computer chassis assembly allowing for removal of the midplane without affecting the computer chassis configuration.