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A silver rectangular ATX power supply unit with a black cooling fan grille and visible ventilation slots

KHACHIMO

KHACHIMO PSU For FSP 350W FSP350-50AHNCH power supply

SKU CH-0DAD-ZEASW

An ATX power supply delivering 350 W with 80 PLUS Gold efficiency, Zero RPM fan mode, Modern Standby support and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery through LLC resonant topology with DC-to-DC conversion
  • Reduced coil whine for quieter system performance

Replacement 350W ATX power supply

This unit replaces the original FSP350-50AHNCH in systems that require a standard ATX form factor. It fits existing mounting points and connector layouts without modification. Builders restoring or upgrading compatible desktops can install it directly. It is not for cases or motherboards that need a different form factor or higher total output.

80 PLUS Gold efficiency and 350W capacity

The 350W rating delivers enough headroom for typical office and home PCs with integrated graphics or low-power discrete cards. 80 PLUS Gold certification means high efficiency across the load range, reducing waste heat and electricity cost. At low and medium loads the Zero RPM fan mode stops the fan completely for silent running. Systems with power-hungry CPUs or multiple GPUs will exceed the available wattage.

Modern Standby and LLC topology upgrades

Modern Standby support enables faster wake-from-sleep transitions and deeper low-power states compared to older designs. Resonant LLC topology with DC-to-DC conversion provides cleaner voltage regulation and less coil whine. The upgrade is worth it when replacing a noisy, less efficient unit or when adding Modern Standby capability to a compatible platform. It does not add connectors or wattage beyond the original 350W specification.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery through LLC resonant topology with DC-to-DC conversion
  • Reduced coil whine for quieter system performance

Specifications

TypeATX

Questions about this item

Will the 350W ATX unit power a motherboard that uses Modern Standby sleep states?

Yes — the supply is Modern Standby compatible, so it supports the fast wake-from-sleep times and low-load efficiency that standard requires.

How can I confirm the 80 PLUS Gold efficiency is active once the PSU is installed?

At typical loads the fan stays off in Zero RPM mode and the unit runs cooler; those are the normal signs the Gold-rated platform is operating as designed.

Does the box include the ATX 24-pin and CPU power cables, or must I source them separately?

The product is sold as the power supply unit only; any modular cables or adapters needed for your build are not included and must be purchased separately.

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