Abstract: A modular chassis for housing pluggable computer module includes pre-assembled and pre-wired bottom functional section having desired computer components mounted thereto, a pre-assembled and pre-wired inner functional section for receiving the pluggable modules, and a pre-assembled and pre-wired top functional section having desired computer components mounted thereto. The inner functional section is supported within and electrically interconnected to the bottom functional section and is removable from the bottom functional section. The top functional section cooperates with the bottom functional section to at least partially enclose the inner functional section and retain the inner functional section therein. The top functional section is electrically interconnected to the inner functional section. The top functional section is removable from the inner functional section and the bottom functional section.