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Rectangular ATX power supply unit with matte black finish and cooling fan visible

KHACHIMO

KHACHIMO SRP-40A-1008 40W 12V 3.33A power supply

SKU CH-RJRQ-Q2Z1X

ATX 12 V 40 W power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for silent, low-power operation

  • TypeATX
  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps silence at low loads
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 40 W at 12 V and 3.33 A for compact builds

40W ATX power supply for low-power builds

This 40 watt ATX unit delivers 12 volts at 3.33 amps for compact or embedded systems with modest power requirements. Its Modern Standby support enables extremely fast wake-from-sleep transitions and improved low-load efficiency. The 80 PLUS Gold certification confirms high conversion efficiency across typical loads. Builders seeking a quiet, efficient supply for thin clients, digital signage or small form factor PCs will find it suitable.

Fits standard ATX mounting with DC-to-DC topology

The resonant LLC design with DC-to-DC conversion provides clean, consistent power while reducing coil whine for quieter operation. This topology also enables the use of more energy efficient sleep states supported by modern platforms. No auxiliary PCIe or EPS connectors are described, so the unit is intended for systems powered solely from the main ATX and peripheral leads. It frees up case space and thermal budget in builds that do not require high-wattage overhead.

Zero RPM fan mode for silent idle operation

At low and medium loads the cooling fan switches off entirely, delivering near-silent operation during typical desktop or idle workloads. This behaviour complements the high efficiency and low heat output highlighted by the Gold rating. No bundled cables, mounting screws or software utilities are mentioned in the supplied data.

Points forts

  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps silence at low loads
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 40 W at 12 V and 3.33 A for compact builds

Caractéristiques

TypeATX

Questions sur cet article

How much continuous power can the 40 W unit deliver before protection trips?

The SRP-40A-1008 is rated for 40 W continuous output at 12 V and 3.33 A; exceeding this limit triggers over-power protection.

Does the fan stay off or spin quietly under all-day desktop loads?

Zero RPM mode stops the fan completely at low and medium loads, while 80 PLUS Gold efficiency keeps heat and noise low during sustained operation.

Which motherboard power connector does this 12 V supply require?

It uses a standard ATX 24-pin main connector plus the matching 12 V CPU and peripheral cables for a typical desktop build.

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