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Compact 1U 400W ATX power supply unit with cooling fan grille

KHACHIMO

KHACHIMO FLEX NAS LOLI Small 1U 400W ATX Power Supply ENP-7140B

SKU CH-VY30-8FWAV

A compact 1U ATX power supply delivering 400 W with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology for quiet, stable operation

  • TypeATX
  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • Compact 1U 400W ATX form factor fits small NAS and server chassis

Compact 1U ATX PSU for dense builds

This 400 W unit fits a 1U chassis and carries 80 PLUS Gold certification for efficient power delivery. It targets NAS appliances and small-form-factor servers that need reliable output in a slim profile. Modern Standby support allows rapid wake-from-sleep behaviour. The resonant LLC topology with DC-to-DC conversion keeps voltage regulation tight.

400 W continuous capacity and headroom

The supply delivers its full 400 W rating across the combined rails for typical NAS workloads and embedded boards. Peak demands beyond that level will trip protection, so multi-GPU arrays or heavily overclocked CPUs are outside its design envelope. Builders needing more than 400 W should select a higher-rated unit.

Thermals noise and power draw in normal use

Zero RPM mode stops the fan completely at low and medium loads, yielding near-silent operation during idle or light file-serving tasks. Gold-level efficiency reduces waste heat, keeping internal temperatures lower in confined 1U enclosures. The resonant LLC design also suppresses coil whine for quieter overall acoustics.

Highlights

  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • Compact 1U 400W ATX form factor fits small NAS and server chassis

Specifications

TypeATX

Questions about this item

Will the 400W ENP-7140B power a legacy ATX motherboard that still needs a -5 V rail?

This supply follows the modern ATX standard and omits the -5 V rail; older boards requiring that voltage will not work.

How can I confirm the Zero RPM Fan Mode is active after installation?

At low and medium loads the fan stops completely — silence and zero visible blade rotation confirm the mode is working.

Does the box include modular cables or must I buy them separately?

The unit ships with fixed cables only; no modular cables are included and none are available for this model.

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