Rugged 3U CyberResearch RMSC MX chassis consist of 1.6-mm (0.063-in) steel and are suitable for challenging off-road mobile applications and limited vehicle space. Features include a low height and 15 in (381 mm) depth behind panel, while a 400-W power supply offers five hard drives, seven expansion slots, and five cooling fans. The chassis accept a variety of ATX motherboards supporting high-powered Core 2 Quad, Core 2 Duo, and Pentium 4 CPUs. A CD-RW/DVD-ROM drive and four open drive bays are standard. A lockable front door provides access to two drive bays, two cooling fans, two USB ports, a power switch, and a reset switch.