National Instruments PXI-1031 4-slot chassis. Tested with modules, fully functional, and in excellent physical condition. 

For engineers and scientists who need a high-power PXI chassis with reduced acoustic noise emissions for office, laboratory, and educational environments, National Instruments offers the NI PXI-1031 4-slot PXI chassis with sound pressure levels as low as 40 dBA (per ISO 7779 at operator position). With its enhanced cooling capacity, 300 W universal AC power supply, and HALT-tested chassis design, the PXI-1031 meets the demanding cooling and power requirements of today's high-performance PXI applications.

For additional information, refer to the manufacturer's website.