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Black Flex ATX power supply unit with fixed cables

Ruth's sister

Ruth's sister 400W Flex ATX internal power cable

SKU CH-Q8P3-EPVPX

Delivers 400W continuous power in Flex ATX form factor with 80 Plus Gold efficiency, active PFC, 6-pin PCIe and dual SATA connectors for compact desktop builds

  • 400W continuous power for demanding desktop builds
  • 80 Plus Gold efficiency reduces heat and energy waste
  • Full modular cabling keeps the interior tidy
  • Active PFC delivers stable voltage from 90-264V
  • 6-pin PCIe connector powers dedicated graphics cards

Flex ATX 400W power supply

This Flex ATX unit delivers 400W continuous power at 40 °C for 24/7 desktop operation. A single +12V rail, active PFC and 80 Plus Gold efficiency keep voltage stable from 90 to 264V input. Japanese main capacitors support long-term reliability.

Suits small-form-factor builds needing fixed cabling

Builders who want a compact 400W supply with a 20+4 pin motherboard connector, 8-pin CPU power, one 6-pin PCIe and two SATA connectors will find the fixed cable set matches the form factor. Systems requiring modular cables, additional PCIe connectors or higher wattage should look at a different unit.

400W continuous rating at 40 °C

The 400W figure is specified for continuous delivery at a 40 °C operating temperature, not a peak rating. This number determines whether the supply can sustain your components under full load in a compact chassis.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $60.99
Pricier than about 86% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does the cable set include the 20+4 pin motherboard connector and 8 pin CPU connector, or do I need to buy them separately?

The set includes the 20+4 pin motherboard connector, 8 pin CPU connector, two SATA connectors, one D-type connector and a 6 pin PCIe connector for graphics cards.

Should I choose the 350 W or 400 W version for a small form factor build?

The unit is rated for 350 W and 400 W continuous output at 40 °C, so the same model covers both ratings for 24/7 operation.

What does the 400 W figure mean when the supply is installed in a desktop?

It means the supply can deliver 400 W continuously at 40 °C ambient temperature, using a single +12 V rail with Active PFC and an input range of 90-264 V.

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