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Rectangular silver TFX power supply unit with fan grille and cable bundle

KHACHIMO

KHACHIMO Pro DX7400 250W Power Supply

SKU CH-DNN3-5FMTP

A 250 W ATX power supply for Pro 2000 2080 3000 3080 3005 DX7400 systems, 80 PLUS Gold certified with Modern Standby, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • 80 PLUS Gold certification lowers power draw and keeps temperatures down
  • Zero RPM fan mode stops the fan at low loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Modern Standby compatibility enables extremely fast wake-from-sleep and better low-load efficiency
  • ATX form factor fits standard desktop chassis for straightforward installation

250W ATX Power Supply

The KHACHIMO Pro DX7400 is a 250 watt ATX power supply built for compact desktops and office workstations. It carries 80 PLUS Gold certification and supports Modern Standby for rapid wake-from-sleep. Zero RPM fan mode keeps the unit silent at low and medium loads.

Upgrade from lower-efficiency units

Replacing an older bronze or unrated supply with this Gold-rated design cuts power draw and reduces heat inside small chassis. The jump is worthwhile when a system stays in sleep states often or when coil whine from a previous unit is audible. Resonant LLC topology with DC-to-DC conversion delivers cleaner voltage rails for modern sleep states.

Capacity and headroom

At 250 watts the unit comfortably powers integrated graphics platforms, entry-level discrete cards and typical office peripherals. It runs out of headroom with mid-range or high-end graphics cards that demand supplementary power connectors or sustained loads above the rated output. Builders needing more wattage or additional PCIe connectors should select a higher-capacity model.

Highlights

  • 80 PLUS Gold certification lowers power draw and keeps temperatures down
  • Zero RPM fan mode stops the fan at low loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Modern Standby compatibility enables extremely fast wake-from-sleep and better low-load efficiency
  • ATX form factor fits standard desktop chassis for straightforward installation

Specifications

TypeATX

Questions about this item

Will this 250 W unit fit a standard ATX case?

Yes, the supply is an ATX-type unit so it mounts in any case that accepts a regular ATX power supply.

Which cables must be connected during installation, and what is the common error?

Firmly seat the 24-pin motherboard connector and the 4+4-pin CPU power plug; the frequent mistake is not pushing the CPU power cable fully home.

Does the fan require periodic cleaning or replacement?

The Zero RPM Fan Mode stops the fan at low and medium loads, reducing dust build-up and extending the fan’s service life.

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