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Rectangular ATX power supply unit, matte black finish with cooling fan grille

KHACHIMO

KHACHIMO Power Supply For TDK-Lambda Alpha 400W H40205

SKU CH-71VH-J79NT

A 400 W ATX power supply compatible with TDK-Lambda Alpha units, offering 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • Modern Standby support for near-instant wake and low-load efficiency
  • 80 PLUS Gold efficiency cuts power draw, noise and heat
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC with DC-to-DC delivers clean power and reduces coil whine
  • ATX form factor fits standard desktop builds

Replacement 400W ATX PSU

This KHACHIMO unit is a direct-fit replacement power supply for TDK-Lambda Alpha systems requiring the H40205 or CA400 model. It delivers 400 watts through a standard ATX form factor, making it suitable for technicians and integrators servicing compatible industrial or workstation platforms.

Efficiency and noise upgrade

The 80 PLUS Gold certification and Resonant LLC topology with DC-to-DC conversion raise efficiency and cut coil whine compared to older Bronze or uncertified units. Modern Standby support and a Zero RPM fan mode make the swap worthwhile when the original supply lacks low-load efficiency or runs audibly loud at idle.

Standard ATX installation

Mounting follows normal ATX screw patterns and connector layouts, so no case modification is needed. The only common issue is verifying that the specific H40205 pin-out matches the target motherboard, as some OEM variants re-arrange the 12 V rails despite using the same housing.

Points forts

  • Modern Standby support for near-instant wake and low-load efficiency
  • 80 PLUS Gold efficiency cuts power draw, noise and heat
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC with DC-to-DC delivers clean power and reduces coil whine
  • ATX form factor fits standard desktop builds

Caractéristiques

TypeATX

Questions sur cet article

What physical clearance does this ATX power supply need inside the case?

This unit follows the standard ATX form factor, so it fits any chassis with an ATX power-supply bay and the usual rear mounting holes.

Which cables must be connected during installation to enable Modern Standby wake-from-sleep?

Attach the 24-pin ATX motherboard connector, the 4+4-pin CPU power cable, and ensure the motherboard firmware has Modern Standby enabled in BIOS.

When should the Zero RPM fan be inspected for dust build-up?

Check the fan intake every six to twelve months; if the blades show visible dust, clean with compressed air while the unit is powered off and unplugged.

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