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Compact silver ATX power supply unit with rear fan grille

KHACHIMO

KHACHIMO 55W ATX Power Supply For POWER-ONE/BEL MAP55-4000G

SKU CH-J09E-C3NTH

A 55W ATX replacement unit for POWER-ONE/BEL MAP55-4000G systems with 80 PLUS Gold efficiency and a Zero RPM fan mode for silent low-load operation

  • 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 power and reduces coil whine
  • Designed as a 55W ATX replacement for POWER-ONE/BEL MAP55-4000G units

Compatible Replacement Unit

This ATX power supply is built as a direct replacement for the POWER-ONE/BEL MAP55-4000G unit. It delivers 55 watts of power for small form factor or embedded systems requiring this specific form factor. The unit is new and designed to match the original electrical specifications.

Sustained Load Behaviour

The 80 PLUS Gold certification ensures high efficiency during continuous operation, reducing heat output and lowering energy consumption. Resonant LLC topology with DC-to-DC conversion maintains clean, stable voltage regulation under prolonged load. This design also supports modern sleep states for consistent long-term reliability.

Installation And Common Issues

Installation follows standard ATX mounting procedures for the target chassis. The Zero RPM fan mode eliminates noise at low and medium loads, though the fan will activate under heavier sustained demand. Builders must verify physical dimensions and connector layout match the original MAP55-4000G unit before fitting.

Pluspunten

  • 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 power and reduces coil whine
  • Designed as a 55W ATX replacement for POWER-ONE/BEL MAP55-4000G units

Specificaties

TypeATX

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How quiet is the 55W unit when it runs all day under light load?

Zero RPM Fan Mode stops the fan completely at low and medium loads, giving near-silent operation during extended use.

Which connectors must my system already provide for this ATX supply to work?

Standard ATX motherboard and peripheral cables are required; the unit follows the ATX form factor and pin-out.

Will the MAP55-4000G replacement fit a chassis built for the original 4000 series supply?

Yes, it is built as a direct ATX replacement for the POWER-ONE/BEL MAP55-4000G, matching the original mounting and wiring.

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