The space-conscious Tracewell S31 occupies only 8U of total rack space, yet is also ideal for bench-top operation. Designed around a modular concept, all major components are quickly accessible for ease of configuration and service. A front plugging service module supports power, cooling and monitoring, and a front storage module provides up to five drive bays. Advanced design and manufacturing minimizes fasteners while providing EMI control without the need for costly gasketing. Tracewell’s rigid steel cardcage eliminates flexing often seen in conventional extruded rail designs, while meeting all IEEE 1101.10/11 standards. Removing just four screws allows the entire rear subrack assembly to slide from the chassis, providing unrestricted access to the backplane and all internal DC wiring. System features include backplane options supporting the latest PICMG hot swap, 64 bit and H.110 TDM telephony bus platforms. A standard system monitor verifies fan speed and power supply output voltage limits. Reliable, low cost power for AC and DC input uses proven PS/2 power supply technology and high-pressure axial fans provide distributed airflow throughout the chassis.