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Rectangular ATX power supply unit with metal casing and single 120mm cooling fan visible

E-POWER

E-POWER EP-400PM power supply 400W ATX12V 2.0 120mm fan 2 SATA

SKU CH-YBJQ-5WKGB MPN EP-400PM

A 400 W ATX12V 2.0 unit with a 120 mm fan, dual 12 V rails and two SATA connectors

  • TypeATX12V 2.0
  • Maximum Power400 W
  • FansSingle 120 mm Cooling Fan
  • Main Connector20+4Pin
  • +12V Rails2
  • SATA Power Connector2

Options ATX (400W)

  • 400 W maximum output powers standard desktop builds
  • 75 % efficiency rating reduces wasted energy
  • 120 mm cooling fan keeps temperatures low
  • Dual +12 V rails deliver stable voltage to components
  • Two SATA connectors support modern storage drives

400 W ATX12V 2.0 PSU

This unit delivers a maximum output of 400 W through an ATX12V 2.0 design. It targets builders assembling basic office or home PCs that need a fixed cable set. The non-modular layout keeps wiring simple for first-time system integrators. It fits standard ATX cases with a maximum length of 140 mm.

Thermals noise and power draw

A single 120 mm cooling fan handles airflow across the internal components. The supply operates at a 75 % efficiency rating under typical loads. It accepts input voltages of 115 or 230 V across a 50/60 Hz range. Dual +12 V rails provide 14 A and 15 A respectively for balanced distribution.

Bundled connectors and their impact

The fixed harness includes one 20+4 pin ATX connector, one 4 pin ATX connector, two SATA power plugs, four Molex plugs and one FDD connector. These cables support a motherboard, two SATA drives and multiple legacy peripherals without adapters. Builders needing more SATA devices or modular cable management must look elsewhere.

Pluspunten

  • 400 W maximum output powers standard desktop builds
  • 75 % efficiency rating reduces wasted energy
  • 120 mm cooling fan keeps temperatures low
  • Dual +12 V rails deliver stable voltage to components
  • Two SATA connectors support modern storage drives

Specificaties

BrandePOWER
SeriesPM Series
ModelEP-400PM
TypeATX12V 2.0
Maximum Power400 W
FansSingle 120 mm Cooling Fan
Main Connector20+4Pin
+12V Rails2
SATA Power Connector2
Max PSU Length140 mm
ModularNon-Modular
Efficiency75% Efficiency Rating
Input Voltage115 / 230 V
Input Frequency Range50/60 Hz
Input Current10 - 6A
Output+3.3V@22A, +5V@30A, +12V1@14A, +12V2@15A, [email protected] , [email protected]
Connectors1 x ATX 24pin & 20 pin
1 x ATX 4 pin
2 x SATA
4 x Molex 4 pin
1 x FDD
FeaturesForm Factor: ATX12V 2.0
Maximum Wattage: 400W
Single 120 mm Cooling Fan
75% Efficiency Rating
FCC Approval
Dimensions3.38" x 5.51" x 5.91"
Weight4 lbs.
Verzendgewicht1.18 kg
Pakketafmetingen254 × 203 × 102 mm

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Vragen over dit artikel

How do I install the EP-400PM in my case and what step often goes wrong?

Mount the 140 mm long unit with four screws, connect the 20+4 pin main and 4 pin CPU cables, then plug the two SATA and four Molex leads; the common mistake is leaving the 4 pin CPU connector loose.

What maintenance or replacement will the EP-400PM need later?

The single 120 mm fan is the only moving part; clean dust from its grille every few months and replace the whole supply if the fan becomes noisy or airflow drops.

Which limit appears first when the EP-400PM runs under sustained load?

The +12V rails are rated at 14 A and 15 A each; drawing more than those currents on either rail triggers the protection circuit before the 400 W total is reached.

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