E-POWER
E-POWER EP-400PM power supply 400W ATX12V 2.0 120mm fan 2 SATA
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)
- ATX (400W)
- ATX (600W)
- 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.
Highlights
- 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
Specifications
| Brand | ePOWER |
|---|---|
| Series | PM Series |
| Model | EP-400PM |
| Type | ATX12V 2.0 |
| Maximum Power | 400 W |
| Fans | Single 120 mm Cooling Fan |
| Main Connector | 20+4Pin |
| +12V Rails | 2 |
| SATA Power Connector | 2 |
| Max PSU Length | 140 mm |
| Modular | Non-Modular |
| Efficiency | 75% Efficiency Rating |
| Input Voltage | 115 / 230 V |
| Input Frequency Range | 50/60 Hz |
| Input Current | 10 - 6A |
| Output | +3.3V@22A, +5V@30A, +12V1@14A, +12V2@15A, [email protected] , [email protected] |
| Connectors | 1 x ATX 24pin & 20 pin 1 x ATX 4 pin 2 x SATA 4 x Molex 4 pin 1 x FDD |
| Features | Form Factor: ATX12V 2.0 Maximum Wattage: 400W Single 120 mm Cooling Fan 75% Efficiency Rating FCC Approval |
| Dimensions | 3.38" x 5.51" x 5.91" |
| Weight | 4 lbs. |
| Shipping weight | 1.18 kg |
| Package size | 254 × 203 × 102 mm |
Other versions of this model
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Questions about this item
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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