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Silver ATX power supply unit with fan grille and cable bundle

KHACHIMO

KHACHIMO FSP400-60DL 48V 400W ATX Power Supply

SKU CH-DAMQ-V0259

ATX 400 W power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • Product typeATX
  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops completely at low loads for silent running
  • Resonant LLC topology with DC-to-DC delivers clean stable power
  • 48 V 400 W ATX output for compatible systems

48 V ATX supply for low-noise builds

This 400 W unit delivers power from a 48 V DC source using an ATX form factor. It targets system integrators and enthusiasts building compact or industrial PCs that run from a 48 V bus and value certified efficiency. The 80 PLUS Gold rating confirms high conversion efficiency across typical loads. Modern Standby compatibility ensures rapid wake times for always-ready desktops.

Sustained output with resonant LLC and DC-to-DC

Resonant LLC topology paired with DC-to-DC conversion maintains tight voltage regulation during prolonged workloads. The design minimises ripple and suppresses coil whine even when the supply runs continuously at significant load. Gold-level efficiency reduces waste heat, allowing the fan to remain idle longer under real-world conditions. Stable output is preserved without the voltage drift seen in simpler topologies.

Semi-passive cooling and standard ATX mounting

Zero RPM fan mode stops the fan completely at low and medium loads, yielding near-silent operation for office or media-centre use. The ATX chassis fits standard mounting points in typical cases and racks. DC-to-DC architecture contributes to cleaner power delivery and quieter electrical performance day to day. Builders relying on a 48 V infrastructure gain a reliable, standards-compliant power solution.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $536.99
Pricier than about 90% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

How loud is the fan during all-day use with the Zero RPM Fan Mode?

At low and medium loads the cooling fan switches off entirely for near-silent operation; under heavier load the fan spins up but the Resonant LLC topology with DC-to-DC conversion reduces coil whine for quieter running.

What motherboard connector does the KHACHIMO FSP400-60DL need to work?

It uses a standard ATX connector, so a motherboard with an ATX power socket is required.

Will this 48 V 400 W unit power an older ATX system that still uses legacy sleep states?

Yes, the Resonant LLC topology with DC-to-DC conversion enables use of more energy efficient sleep states while maintaining compatibility with standard ATX motherboards.

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