The SIU31 is a highly configurable rugged system or subsystem ideally suited to support a multitude of Mil-Aero applications that require high-density I/O, communications, Ethernet switching and processing. The SIU31 uses one NAI field-proven 3U cPCI board to deliver off-the-shelf solutions that accelerate deployment of SWaP-optimized systems in air, land and sea applications.