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Compact 1U Flex ATX power supply unit with matte black finish and cooling fan

KHACHIMO

KHACHIMO ITX FLEX DC-DC 1U S3 K39 A35 550W 600W Power Supply

SKU CH-SE1T-50ZNM

An 80 PLUS Gold ATX power supply delivering up to 600 W with Modern Standby support, zero-RPM fan mode and resonant LLC DC-to-DC topology for quiet, efficient operation

  • TypeATX
  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 550 W and 600 W ratings suit compact ITX builds

Compact ITX Flex Power Supply

The KHACHIMO ITX Flex unit is a DC-to-DC ATX power supply designed for small-form-factor builds that require a 1U footprint. It delivers up to 600 W peak output with a 550 W continuous rating and carries 80 PLUS Gold certification for high efficiency. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency.

Verify Physical and Electrical Fit

Confirm that your chassis accepts a 1U ITX Flex form factor and that the ATX connector layout matches your motherboard. The DC-to-DC topology with resonant LLC conversion provides clean power and supports deeper sleep states, so ensure your board implements the corresponding power-management features. Zero RPM fan mode activates at low and medium loads, which depends on the thermal profile of your specific configuration.

Ideal for Quiet Small-Form-Factor Systems

This supply suits builders assembling compact workstations or HTPCs who prioritise silent operation and efficient sleep states. It is not intended for full-size ATX cases that expect standard PS/2 dimensions. Buyers who need higher continuous wattage or modular cabling for extensive GPU configurations should look at larger form-factor units.

Highlights

  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 550 W and 600 W ratings suit compact ITX builds

Specifications

TypeATX

Questions about this item

Does the KHACHIMO ITX FLEX power supply include all necessary cables or must any be purchased separately?

The unit ships as a DC-DC module for 1U S3 chassis; specific cable inclusion is not detailed, so verify with your case or motherboard requirements before ordering.

Should I choose the 550W LMJD-5500 or the 600W LMJD-6000 version for my build?

Select the 550W model for lower peak loads or the 600W model when extra headroom is needed; both share Modern Standby, 80 PLUS Gold, Zero RPM fan mode and LLC resonant topology.

What does the 80 PLUS Gold rating mean for daily power draw and thermals in a compact 1U system?

It guarantees at least 80% efficiency at typical loads, reducing waste heat and allowing the fan to stay off longer via Zero RPM mode, which keeps a small chassis cooler and quieter.

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