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Rectangular ATX power supply unit with matte black finish and cooling fan visible

KHACHIMO

KHACHIMO DP1S-2400V-R DC48V 400W Power Supply

SKU CH-TY25-P7BKY

An ATX power supply delivering 400 W at 48 V with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Modern Standby support enables rapid wake-from-sleep transitions
  • 80 PLUS Gold certification delivers high efficiency for lower power draw and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 48 V DC input with 400 W output suits high-density server and industrial deployments

ATX 400W 48V Supply

The KHACHIMO DP1S-2400V-R is an ATX switching power supply rated at 400 watts on a 48 volt DC input. It suits builders assembling compact or industrial systems that run from a 48 volt DC source rather than mains AC.

Thermals and Noise

An 80 PLUS Gold certification means high efficiency across typical loads, reducing waste heat and keeping internal temperatures lower. The Zero RPM fan mode stops the cooling fan completely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion further cuts coil whine and supports efficient sleep states.

Upgrade Context

This unit replaces an older ATX supply that lacks Modern Standby support or Gold-level efficiency. The jump is worthwhile when faster wake-from-sleep times, quieter low-load running, and cleaner power delivery matter for the build.

Highlights

  • Modern Standby support enables rapid wake-from-sleep transitions
  • 80 PLUS Gold certification delivers high efficiency for lower power draw and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 48 V DC input with 400 W output suits high-density server and industrial deployments

Specifications

TypeATX

Questions about this item

How do I install the DP1S-2400V-R ATX power supply, and what step is often missed?

Mount the unit in the case, connect the 24-pin ATX, CPU and GPU cables, then enable Modern Standby in the BIOS so the 48 V rail can enter the low-power sleep states the 80 PLUS Gold design expects.

What maintenance or replacement will the DP1S-2400V-R need later?

Clean dust from the fan intake periodically; the Zero RPM mode keeps the fan off at low and medium loads, so bearing wear is minimal, but the 400 W unit should be replaced if coil whine appears or voltages drift outside spec.

What limit appears first on the DP1S-2400V-R during sustained heavy use?

The 400 W total output ceiling is reached before thermal limits, because the resonant LLC topology with DC-to-DC conversion runs efficiently, yet the 2400 V-R model cannot deliver more than its rated wattage continuously.

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