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Compact 1U silver power supply unit with rear fan grille and modular cable sockets

KHACHIMO

KHACHIMO FLEX NAS LOLI Small 1U 500W Power Supply HJ-500WA

SKU CH-VDC1-HCHGT

A 1U 500W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Modern Standby support delivers extremely fast wake-from-sleep times and better low-load efficiency
  • 80 PLUS Gold certification ensures high efficiency operation for lower power consumption, less noise, and cooler temperatures
  • Zero RPM fan mode stops the cooling fan entirely 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
  • 500W ATX power supply rated for reliable performance in compact 1U NAS builds

Compact 1U power supply for space-constrained builds

The KHACHIMO FLEX NAS LOLI Small 1U 500W Power Supply HJ-500WA is an ATX unit designed for compact servers, NAS appliances and other chassis that require a 1U form factor. It delivers 500 W of continuous power with 80 PLUS Gold certified efficiency. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency.

Upgrade from lower-efficiency or noisy 1U units

This supply replaces older 1U power supplies that lack Gold-rated efficiency, resonant LLC topology with DC-to-DC conversion, or a Zero RPM fan mode. The jump is worthwhile when you need cleaner power delivery, reduced coil whine, quieter operation at low and medium loads, and support for modern sleep states in a 1U footprint.

Straightforward ATX installation in compatible 1U

Installation follows standard ATX mounting for 1U chassis; ensure the case accepts the 1U height and that the modular cabling matches your component connectors. Common issues include insufficient clearance for cable routing in very tight enclosures and verifying that the motherboard and backplane power connectors align with the supplied cables.

Highlights

  • Modern Standby support delivers extremely fast wake-from-sleep times and better low-load efficiency
  • 80 PLUS Gold certification ensures high efficiency operation for lower power consumption, less noise, and cooler temperatures
  • Zero RPM fan mode stops the cooling fan entirely 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
  • 500W ATX power supply rated for reliable performance in compact 1U NAS builds

Specifications

TypeATX

Questions about this item

Will the 1U form factor fit my compact server chassis?

The supply is built to the 1U height standard, so it slides into any rack or chassis that accepts a 1U ATX power supply.

Which cables must be connected during installation to enable Modern Standby?

Connect the 24-pin ATX, the 8-pin EPS and the PCIe power leads; the firmware then handles Modern Standby signalling automatically.

How often should the fan bearing be checked given the Zero RPM mode?

Because the fan stops at low load, dust buildup is slower; a visual inspection once a year is sufficient for most environments.

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