The Keysight E8401A C-size, 13-slot VXI mainframe is the lowest-cost mainframe in Keysight Technologies VXI mainframe family. It delivers innovative cooling technology, improved backplane design, high reliability, easy maintenance, and versatile accessories. The power supply in the E8401A VXI mainframe provides 500 watts of usable power, sufficient for most automated test applications. The innovative air distribution system provides extremely quiet and efficient cooling. Basic mainframe monitoring of the E8401A indicates normal operating conditions at a glance. A front panel diagnostics connector allows continuous local or remote system monitoring. This mainframe also complies with the VXI Specification by providing injector surface rails used by the Keysight QUIC easy module insertion and extraction system. Superior cooling, reliable design and system monitoring make the E8401A an excellent choice for most VXI test system applications.