The National Instruments APS-4100 Auxiliary Power Supply (Part Number: 779671-01) is a crucial component designed to extend external power capabilities for NI PXI programmable power supply configurations. This front panel-connected auxiliary power supply addresses scenarios where the internal power generated by the PXI configuration is inadequate for demanding applications. The APS-4100 operates within an extensive input range of 100 to 240 VAC and 47 to 63 Hz, delivering a stable output of 12 VDC with a maximum capacity of up to 5 A and 60 W, while functioning effectively within a temperature range of 0 to 55 °C. It is essential for users to obtain a separate input power cord, as it is not included with the power supply. When utilized to externally power the PXI power supply module, the APS-4100 can support all PXI channels at a full power state of 1 A per channel, allowing for a total maximum power output of 46 W. Specifically engineered for high power demand applications, the APS-4100 enhances the operational efficiency of NI PXI systems within testing, manufacturing, and design validation environments. This product is backed by a three-year warranty, and relevant manuals and documentation are readily available for download.