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Small silver 1U power supply unit with modular cables

Ruth's sister

Ruth's sister PSU 550W 500W ITX FLEX NAS Small 1U Full Modular internal power cable

SKU CH-921D-Y6Y5X

A 550 W 1U Flex ATX power supply with full modular cables, 80 Plus Gold efficiency and two SATA connectors

  • Full modular design simplifies cable management in compact builds
  • 80 PLUS Gold efficiency reduces energy waste and heat output
  • 550 W rated power with 650 W peak handles demanding ITX systems
  • Active PFC corrects power factor across 95-264 V input range
  • Two SATA connectors support storage drives in NAS or small-form-factor PCs

Compact FLEX PSU for ITX and 1U builds

This fully modular FLEX form-factor unit delivers 550 W rated output with an 80 PLUS Gold efficiency rating. It fits small ITX chassis and 1U server enclosures where standard ATX power supplies cannot be installed. The 95-264 V input range supports worldwide mains voltages without a selector switch.

Straightforward cable routing with fixed pinouts

Full modularity lets you attach only the cables required for a given build, reducing clutter in tight enclosures. The 20+4 pin main connector, 4-pin CPU power and 8-pin GPU power use industry-standard pinouts, so mis-wiring is unlikely if the correct cables are used. Two SATA connectors are provided for drive power.

Steady output at elevated temperatures

Active PFC and Gold-rated efficiency keep waste heat low during continuous operation at the 550 W rating. The 14 A output on the main rail remains stable under sustained load rather than only in short bursts. Maximum peak capacity reaches 650 W for transient spikes.

Highlights

  • Full modular design simplifies cable management in compact builds
  • 80 PLUS Gold efficiency reduces energy waste and heat output
  • 550 W rated power with 650 W peak handles demanding ITX systems
  • Active PFC corrects power factor across 95-264 V input range
  • Two SATA connectors support storage drives in NAS or small-form-factor PCs

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the PSU is operating correctly after installation?

The fan should spin and the system should power on when the 20+4 pin connector is seated; the 80 PLUS Gold rating indicates certified efficiency.

What cables and connectors are included, and what must I source separately?

The full-modular unit ships with cables for the 20+4 pin motherboard, 4 pin CPU, 8 pin graphics and two SATA drives; any additional SATA or peripheral cables are not included.

Should I select the 550 W or 650 W rating for my build?

The nameplate lists a rated output of 550 W with a 650 W maximum; choose based on whether your sustained load stays near 550 W or occasionally peaks toward 650 W.

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