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Redundant ATX power supply, two hot-swappable modules, black ribbon cables, 190 mm long

FSP

FSP FSP900-50REB 900 W ATX redundant power supply

SKU CH-EAK6-6XFCN MPN FSP900-50REB

Hot-swappable redundant 900 W ATX supply with 80 PLUS Gold efficiency and Guardian monitoring software

  • Max wattage900 W
  • Modular cablingNon-Modular
  • Power factor correctionActive
  • Main power connector24Pin
  • 12V railsSingle
  • PCIe power connectors4 × 6+2-Pin

Model ATX PS2 Dual (900W)

  • Redundant 1+1 design keeps systems running during module failure
  • Hot-swappable modules allow replacement without shutdown
  • 80 PLUS Gold certification delivers 900 W at high efficiency
  • FSP Guardian software monitors power input and output in real time
  • Black ribbon cables improve airflow and simplify cable routing

Redundant 900 W ATX Power Supply

This FSP Twins Pro unit delivers 900 W through two hot-swappable modules in a standard ATX PS2 form factor. It targets mail, web and home-server builders who need continuous uptime without a front-end bracket. The 80 PLUS Gold certification and full protection suite support reliable 24/7 operation.

Hot-Swap Limits and Monitoring

Each module can be replaced while the system runs, so a single failure does not interrupt power delivery. The included Guardian software connects via a USB header to report real-time input, output and efficiency data. A power-cord locking device prevents accidental disconnection during module changes.

Capacity for Multi-GPU Server Loads

Four 6+2-pin PCIe connectors and six SATA power connectors provide headroom for multiple graphics cards and storage arrays. The single +12 V rail design simplifies load distribution across the 900 W budget. Non-modular black ribbon cables aid airflow but fix the cable complement for the build.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $528.99
Pricier than about 90% of the 10,869 comparable items (median $142.99).
Max wattage 900 W
Higher than about 63% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameFSP Group
Product typeATX
Ports & slots
PCIe power connectors4 × 6+2-Pin
SATA power connectors6
Connection types1 × 24 pin ATX
Power
Max wattage900 W
Modular cablingNon-Modular
Power factor correctionActive
Main power connector24Pin
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Compatibility
PSU length limit190 mm

Other versions of this model

4 more in the same range

Questions about this item

Should I pick the 900 W redundant version or a single non-redundant unit?

Choose this 900 W redundant model if the system must stay online during a module swap; each hot-swappable module shares the load so a failure does not cut power.

What does the 900 W rating mean once the supply is installed in a server?

The two modules together deliver up to 900 W continuously; if one module fails the remaining unit still supplies the full load without shutdown.

What does the 80 PLUS Gold label cap in real use?

It certifies the supply meets 80 PLUS Gold efficiency targets, reducing waste heat and power draw during 24/7 operation.

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