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Compact 1U ATX power supply with matte black finish and rear fan grille

KHACHIMO

KHACHIMO EFAP-M251 250W ATX Power Supply

SKU CH-2PFS-XHFTH

An 80 PLUS Gold 250 W ATX unit with Modern Standby support, zero-RPM fan mode and resonant LLC topology for clean, quiet power delivery

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation with Zero RPM fan mode at low loads
  • Clean, stable power from resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine and efficient sleep states enabled by advanced topology

Compact 250W ATX power supply

The KHACHIMO EFAP-M251 is a 250W ATX unit built for small-form-factor systems that need reliable power in a 1U chassis. It carries 80 PLUS Gold certification for high efficiency and lower running temperatures. Modern Standby compatibility ensures rapid wake-from-sleep performance.

Replaces older low-efficiency SFX or TFX units

Upgrading from a basic Bronze or unrated supply brings measurable gains in efficiency and acoustic comfort at typical desktop loads. The jump is worthwhile when the build demands Modern Standby support or when a silent idle state is a priority for living-room or office deployments.

Suits compact workstations and HTPC builds

Ideal for integrators assembling 1U servers, slim towers or media centres that require ATX pin-outs with Gold-class efficiency. Not suited for configurations needing more than 250W of continuous power, multi-GPU setups, or systems that require modular cabling for extensive cable management.

Points forts

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation with Zero RPM fan mode at low loads
  • Clean, stable power from resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine and efficient sleep states enabled by advanced topology

Caractéristiques

TypeATX

Questions sur cet article

What form factor does the EFAP-M251 use so I know it fits my case?

The EFAP-M251 is a 1U ATX power supply designed for compact chassis that accept this height.

Which cable connections must be seated first during installation to avoid a no-post issue?

Connect the 24-pin ATX main power and the 4-pin or 8-pin CPU power cables before turning on the system.

When should the internal fan be cleaned or replaced to keep the Zero RPM mode working?

Clean the fan intake every six to twelve months; replace the fan if bearing noise appears or the Zero RPM mode stops engaging.

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