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Compact silver 550W PSU unit with modular cables visible

Ruth's sister

Ruth's sister internal power cable 550W

SKU CH-REFA-ZH9S0

A 550W ATX 12V power supply with active PFC, full modular cabling, 80 PLUS Gold efficiency, and 8-pin GPU plus 4-pin CPU connectors

  • Delivers 550W rated power for demanding desktop builds
  • 80 PLUS Gold certification ensures high energy efficiency
  • Active PFC maintains stable input across 95-264V range
  • Full modular design reduces cable clutter inside the case
  • Two SATA ports and 8-pin GPU connector support storage and graphics

550W Flex ATX Power Supply

This 550W Flex ATX unit fits small 1U chassis and standard ATX 12V desktops. It delivers full modular cabling with an 80 PLUS Gold rating and active PFC. The supply accepts a wide 95-264V input range for global use.

550W Capacity and Connector Headroom

Rated at 550W with a 14A output on the main rail, it powers mid-range GPUs through an 8-pin PCIe connector and CPUs via a 4-pin EPS plug. Two SATA ports handle storage drives, while the 20+4 pin ATX connector feeds the motherboard. Higher-wattage graphics cards or multi-drive arrays will exceed the available connectors and current budget.

ATX 12V Interface Practical Limits

The 20+4 pin ATX interface and 4-pin CPU connector follow the ATX 12V standard, limiting CPU power delivery compared to 8-pin EPS designs. The single 8-pin PCIe plug restricts GPU compatibility to cards within that power envelope. Input voltage auto-ranges from 110V to 240V AC at 50-60Hz for worldwide operation.

Highlights

  • Delivers 550W rated power for demanding desktop builds
  • 80 PLUS Gold certification ensures high energy efficiency
  • Active PFC maintains stable input across 95-264V range
  • Full modular design reduces cable clutter inside the case
  • Two SATA ports and 8-pin GPU connector support storage and graphics

Specifications

No published specifications for this item yet.

Questions about this item

Will the 20+4 pin ATX connector and 4-pin CPU connector fit my older motherboard?

Yes, the 20+4 pin main connector and 4-pin CPU power connector are standard ATX interfaces compatible with older desktop motherboards.

How can I verify the 550W unit is running correctly after installation?

The system should power on stably under load; the 80 PLUS Gold certification and active PFC indicate efficient operation within the 95-264V input range.

Does the box include the modular cables for the two SATA ports and the 8-pin GPU connector?

The fully modular design means cables are included in the package; you will receive the 20+4 pin, 4-pin CPU, 8-pin GPU, and two SATA cables.

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