A modularized computer chassis for housing multiple computer modules, such as a processor module, media storage module, an I/O module, and power supplies includes a housing divided generally into four regions, with each region configured for receiving one of the modules or power supplies. A single center...http://www.google.de/patents/US6208522?utm_source=gb-gplus-sharePatent US6208522 - Computer chassis assembly with a single center pluggable midplane board
