The National Instruments PXI-1031 Chassis (Part Numbers: 778932-01, 190871M-01L) is designed for professionals in office, laboratory, and educational environments who require a PXI chassis with low acoustic noise emissions. With noise levels reaching as low as 35 dBA, this compact chassis is optimized for use alongside 3U PXI and CompactPCI modules. The PXI-1031 features an advanced cooling system equipped with an auto/high temperature-controlled fan, allowing for a slot cooling capacity of up to 25 W and includes a 300 W general AC power supply. The chassis provides four slots, each integrated with eight PXI trigger lines, and is engineered for dependable thermal performance, thanks to its HALT-tested construction and thoughtful ventilation, including openings on multiple sides for enhanced airflow. Optional accessories such as filler boards for unused slots, a carrying handle for portability, and a rack mount kit for standard 19-inch enclosures are available to optimize usability. It includes a P1 DC input connector for system configuration via the Measurement and Automation Explorer (MAX) tool, provided on the accompanying NI driver CD. The chassis ensures safety through a three-position inlet for grounding connections, mitigating electrical hazards. Weighing 11 lbs and measuring 6.97 x 10.12 x 8.38 inches, the PXI-1031 maintains a three-year warranty and is available for purchase and repair through Apex Waves, despite having reached mature status.