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Silver 1U 300W ATX power supply unit with rear fan grille and cable connections

KHACHIMO

KHACHIMO For FSP -5V 1U 300W PSU FSP300-701UJ

SKU CH-874R-AA71F

A 300 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Modern Standby compatible for extremely fast wake-from-sleep times
  • 80 PLUS Gold certified for high efficiency and lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 300 W ATX power supply with -5 V output for compatible 1U systems

1U 300W ATX power supply

This 1U form-factor ATX unit delivers 300 watts of continuous power and is built for compact server or workstation chassis that require a -5 V rail. Its Gold-certified efficiency and Modern Standby support make it suitable for systems that spend long periods in low-power sleep states.

Build integration and space savings

The slim 1U height frees vertical clearance in dense racks or shallow enclosures while the DC-to-DC resonant LLC topology provides stable voltage regulation for sensitive components. Modern Standby compatibility allows the platform to enter deeper sleep states without losing responsiveness, reducing the need for additional power-management hardware.

Sustained-load behaviour

At low and medium loads the fan remains completely stationary, eliminating acoustic noise during typical idle or background workloads. Under continuous demand the resonant LLC design maintains clean power delivery and suppresses coil whine, while the 80 PLUS Gold rating ensures efficient conversion that limits waste heat buildup over extended operation.

Helstu kostir

  • Modern Standby compatible for extremely fast wake-from-sleep times
  • 80 PLUS Gold certified for high efficiency and lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 300 W ATX power supply with -5 V output for compatible 1U systems

Tæknilýsing

TypeATX

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What limits the FSP300-701UJ first during sustained heavy loads?

The 300 W rated output and 80 PLUS Gold efficiency ceiling cap sustained delivery before thermal or protection limits engage.

How much noise and heat does the unit produce when running all day?

Zero RPM mode keeps the fan off at low and medium loads, and the resonant LLC topology with DC-to-DC conversion reduces coil whine for quieter, cooler operation.

What must the buyer already own for this 1U supply to work?

A chassis with a 1U ATX power-supply bay and a motherboard that accepts standard ATX power connectors.

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