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Rectangular metal server chassis with ventilation slots

NShi

NShi USP-500-12 500W 12V Server Chassis

SKU CH-BZMZ-F7P77

A 500 W, 12 V desktop server power supply with PFC, remote control and 90 % efficiency

  • Chassis TypeDesktop
  • High power density of 6.2 W/in³ for compact server builds
  • Up to 90 % conversion efficiency with ZVS technology reducing loss
  • Operates from -30 °C to +65 °C with full protection suite
  • Metal enclosure uses natural air cooling for silent operation
  • Remote switch, DC-OK signal and remote sensing simplify integration

500 W 12 V Server Power Unit

This Mean Well USP-500-12 switching supply delivers a single 12 V output rated at 500 W and 80 A. It is built for engineers and system integrators who need reliable AC-DC conversion in test benches, measurement rigs or telecom racks. The metal enclosure uses natural air cooling and operates from -30 °C to +65 °C.

Upgrade From Lower Density Supplies

The 6.2 W per cubic inch power density lets this unit replace bulkier supplies where rack or bench space is tight. Active PFC, inrush limiting and up to 90 % efficiency reduce waste heat and AC line distortion. The jump is worth it when existing supplies run hot, lack remote control or cannot meet the wide temperature range.

Integration Requirements And Freedoms

A remote on/off switch, DC-OK signal and remote sensing simplify automated test sequences and long cable runs without voltage drop. Short-circuit, overload, over-voltage and over-temperature protections guard connected gear. The design is not suited for builds that require multiple output rails, redundant hot-swap modules or fan-forced airflow.

Highlights

  • High power density of 6.2 W/in³ for compact server builds
  • Up to 90 % conversion efficiency with ZVS technology reducing loss
  • Operates from -30 °C to +65 °C with full protection suite
  • Metal enclosure uses natural air cooling for silent operation
  • Remote switch, DC-OK signal and remote sensing simplify integration

Specifications

Chassis TypeDesktop

Questions about this item

What desktop chassis space is needed for the NShi USP-500-12?

The unit is a desktop chassis type that uses a metal case with natural air cooling, so it requires open airflow around the enclosure and no forced-air ducting.

How is the remote switch and DC-OK signal wired during installation?

Connect the remote switch terminals to an external control circuit and the DC-OK signal to a monitoring input; the step often missed is verifying polarity on the sensing leads before power-on.

When should the internal fan or thermal paste be serviced on the USP-500-12?

The supply relies on natural air cooling with no internal fan, so there is no fan or thermal paste to replace; keep vents clear and operate within the -30 to +65 range.

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