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Silver 1U power supply unit with rear fan grille and cable bundle

KHACHIMO

KHACHIMO FSP300-60WS1 300W power supply

SKU CH-2B59-B43NR

A 300W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for silent, low-power operation

  • TypeATX
  • Modern Standby support gives near-instant wake times
  • 80 PLUS Gold rating cuts power draw and heat
  • Zero RPM fan mode runs silent at low loads
  • Resonant LLC topology with DC-to-DC delivers clean, stable power
  • 300 W output in a 1U form factor fits compact builds

Compact 300W ATX supply

This 300W ATX power supply fits 1U chassis and delivers Gold-rated efficiency. It suits builders assembling slim desktops or replacement units where space and power draw are limited. Modern Standby support enables rapid wake-from-sleep for responsive daily use.

80 PLUS Gold practical limits

The 80 PLUS Gold rating guarantees high efficiency at typical loads, reducing waste heat and fan noise. Zero RPM mode keeps the fan off at low and medium loads for near-silent operation. Maximum output is capped at 300W, so systems with high-end discrete graphics or many drives may exceed the unit's capacity.

Pre-install checks

Verify the chassis accepts a 1U form-factor ATX supply and that the total component draw stays within 300W. Confirm the motherboard uses a standard 24-pin ATX connector and that CPU power needs match the available EPS or 4-pin connectors. Ensure adequate airflow reaches the unit's intake and exhaust vents.

Highlights

  • Modern Standby support gives near-instant wake times
  • 80 PLUS Gold rating cuts power draw and heat
  • Zero RPM fan mode runs silent at low loads
  • Resonant LLC topology with DC-to-DC delivers clean, stable power
  • 300 W output in a 1U form factor fits compact builds

Specifications

TypeATX

Questions about this item

Should I pick the 300W model for a compact 1U build?

This FSP300-60WS1 delivers 300W in a 1U form factor with ATX connectors, so it fits slim chassis that require standard ATX power.

What does the 80 PLUS Gold rating mean for daily use?

It guarantees at least 80% efficiency at typical loads, lowering electricity draw, reducing heat output and allowing the fan to stay off longer.

How does the ATX interface limit what I can connect?

The unit follows the ATX specification, so it provides standard motherboard, CPU and peripheral connectors; total continuous output is capped at 300W.

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