1. Computer Power Supplies Parts
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  3. DELL A400EFS0

DELL Switching Power Supply 400WATT A400EF-S0

A400ef-s0 Dell A400efs0 400watt Switching Power Supply Model

( Brand: Dell ), ( Manufacturer Part Number: A400EFS0 ), ( Voltage Compatibility: 240 V ), ( Compatible Brand: For Dell ), ( Cooling: 1 Fan ), ( Color: Silver ), ( Compatible Model: Dell Power Edge T310 ), ( Maximum Input Current: 10 A ), ( Connectors: 24 Pin ), ( Type: Power Module ), ( Maximum Power: 400 W ), ( Unit Type: Unit )

Review DELL 400watt Switching Power Supply Model

The Dell A400EF-S0 is a high-performance 400-watt switching power supply designed for use in Dell PowerEdge servers and other IT infrastructure equipment. This power supply offers efficient and reliable power conversion, ensuring optimal system performance and reducing energy waste.

The A400EF-S0 features a modular design, allowing for easy installation and maintenance. It employs Dell's Advanced Power Management technology, which provides intelligent power distribution and reduces power consumption during idle periods. This helps to lower operating costs and decrease the overall carbon footprint of your IT infrastructure.

The power supply is housed in a robust, cooling-optimized enclosure. It includes multiple 12V and -12V output connectors, providing sufficient power for high-density server environments. The A400EF-S0 also includes overvoltage, undervoltage, and overcurrent protection, ensuring the safety and longevity of connected components.

This 400-watt power supply operates with an input voltage range of 100-240V AC and features a high efficiency of up to 93%. Its compact size (150mm x 150mm x 83.6mm, or 5.9 inches x 5.9 inches x 3.3 inches) makes it well-suited for space-constrained server environments.

The Dell A400EF-S0 power supply is compliant with various industry standards, including EN55022, EN55024, FCC Part 15, and IEC 60950-1. It also includes a 3-year limited warranty, ensuring peace of mind and reliable operation for your IT infrastructure.

In summary, the Dell A400EF-S0 is a versatile and efficient 400-watt switching power supply, designed for use in Dell PowerEdge servers and other IT infrastructure equipment. Its modular design, intelligent power management, robust enclosure, and compliance with industry standards make it a reliable and cost-effective choice for powering your critical IT systems.

Dell A400EF-S0 400W Switching Power Supply: A Detailed Analysis

The Dell A400EF-S0 is a 400-watt switching power supply unit (PSU) designed for various Dell systems. In this analysis, we'll discuss the significant pros and cons to help you make an informed decision when considering purchasing this PSU.

Pros:

1. High Efficiency: The Dell A400EF-S0 boasts an impressive 80 PLUS Bronze certification, ensuring that it converts up to 82% of the input power into usable output power. This high-efficiency rating can save energy and reduce heat generation.

2. Quiet Operation: This PSU features a quiet 120mm fan that ensures minimal noise during operation. This is a significant advantage for users looking for a quieter computing environment.

3. Overvoltage and Overcurrent Protection: The A400EF-S0 comes with built-in protection against overvoltage and overcurrent conditions, which can help safeguard your system components from potential damage.

4. Compact Design: With dimensions of 5.7 x 12.3 x 15.1 cm, the Dell A400EF-S0 has a relatively small form factor, making it an excellent choice for users with limited space.

5. Multiple Power Connectors: This PSU includes various power connectors to cater to the power requirements of modern computer components, such as PCIe, SATA, and 4 4-pin EPS12V connectors.

Cons:

1. Limited Warranty: The Dell A400EF-S0 comes with a limited 3-year warranty, which might not be sufficient for some users seeking extended coverage.

2. Limited Overclocking Support: This PSU may not support advanced overclocking, which can be a disadvantage for users looking to push their components to their limits.

3. Limited Modularity: Although it includes some modular cables, the Dell A400EF-S0 does not offer full modularity, meaning that users cannot remove individual cables based on their system requirements.

Conclusion:

The Dell A400EF-S0 400W switching power supply offers several advantages, such as high efficiency, quiet operation, and robust protection features. However, it also comes with some disadvantages, such as a limited warranty and limited modularity.

Based on the analysis, we recommend the Dell A400EF-S0 to users who prioritize high efficiency, quiet operation, and robust protection features. It is also an excellent choice for users with limited space due to its compact design. If you require a longer warranty or advanced modularity, you may want to explore other options. Ultimately, your decision should depend on your specific requirements and preferences.

Details:

part #: a400efs0 prices

  • $22.49-$35.00

specifications powsuppy:

  • brand: Dell
  • mpn: A400efs0
  • voltage compatibility: 240 V
  • compatible brand: For Dell
  • cooling: 1 Fan
  • color: Silver
  • compatible model: Dell Power Edge T310
  • maximum input current: 10 A
  • connectors: 24 Pin
  • type: Power Module
  • maximum power: 400 W
  • unit type: Unit

shipping powsuppy:

  • transit: 9-9 Days
  • carrier: USPS
  • cost: $0.00
  • service: USPS Ground Advantage
  • type: Calculated
  • class: Standard

returns powsuppy:

  • paid by: Seller
  • time: 30 Days
  • method: Money back
  • policy: Returns Accepted

general powsuppy:

  • condition: Used
  • Computers/Tablet's Networking > Computer Components Parts > Power Supplies

payments powsuppy:

  • credit card: Visa
  • other
  • wallet: Apple-pay

seller powsuppy:

  • rating: 98.9%
  • city: Allison Park, Pennsylvania
  • # reviews: 857

offer powsuppy:

  • availability: In Stock
  • started: December 17, 2025
  • options: Ship-to-home
  • sold: 0
  • quantity: 1
voltage compatibility: 240 v, compatible brand: for dell, cooling: 1 fan, compatible model: dell power edge t310, maximum input current: 10 a, connectors: 24 pin, type: power module, maximum power: 400 w, unit type: unit,
category: computers > computers/tablets networking > computer components parts > power supplies, color: silver, sku: 10427826951710782,

Dell A400EFS0 Is Similar To:

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5 offers $22.49–$35.00 USD
  • Offer #1: $24.99 price + $12.16 shipping estimate = $37.15* total. They are identified by Dell Part Number 0VV034, also referenced as PH-0VV034-16298-07N-007U-A00 and REF NO. These power supplies feature an input range of 100-240V / 10A at 50-60Hz and provide an output of +12V at 31.9A and +12Vaux at 1.4A.+$12.16 shipping
  • Offer #2: $35.00 price + $20.57 shipping estimate = $55.57* total. Dell PowerEdge T310 Server 400W ATX Conector.+$20.57 shipping
  • Offer #3: $22.49 price + $0.00 shipping estimate = $22.49* total. Part Number - VV034.FREE SHIPPING
  • Offer #4: $34.99 price + $0.00 shipping estimate = $34.99* total.FREE SHIPPING
  • Offer #5: $34.99 price + $15.10 shipping estimate = $50.09* total.+$15.10 shipping

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