[ POWER CONVERSION // IDENTIFIED MODEL ]
Seasonic FOCUS GX-850 (SSR-850FX)
Seasonic FOCUS GX-850, product code SSR-850FX. This entry covers the specific model or bounded historical system assembly identified here; suffixes and supplier revisions are not presumed equivalent.
HIGH-VOLTAGE SAFETY: Disconnect mains before external inspection. Never open a PSU. Internal capacitors can retain dangerous charge after disconnection. Do not probe or repair its interior; use qualified service or replace it.
Model-specific ratings & fit
| Manufacturer identity | Seasonic FOCUS GX-850, product code SSR-850FX |
|---|---|
| Form factor / generation | ATX12V, 850 W Gold |
| AC input | 100–240 V AC, 50–60 Hz; input current per unit label. |
| DC output | +12 V 70 A; +3.3 V/+5 V 20 A each; −12 V 0.3 A; +5 VSB 3 A; consult exact combined rail table. |
| Dimensions / mounting | 140 × 150 × 86 mm, ATX. |
| Connectors | Fully modular 24-pin, EPS, PCIe, SATA and peripheral; consult exact SSR-850FX cable layout. |
| Revision distinctions | SSR-850FX is distinct from FOCUS GX-850 ATX 3.x generations. Modular side cable compatibility must be verified by exact PSU family/revision. |
Compatibility & safe handling
- Verify full model, suffix, region and revision using the actual unit nameplate and matching manufacturer manual. Wattage and plug shape alone do not establish compatibility.
- Check AC input range, rail and combined output limits, derating, signaling/pinout, cooling direction, mounting and system qualification before installation.
- PSU modular-side cables are model-specific. Never reuse an unapproved lead; a matching plug can carry a different pinout.
- Server hot-plug is permitted only in qualified host configurations and under the host’s documented redundancy/live-service procedure.
- Never open or internally probe the supply. Retire damaged, wet, burnt, corroded, modified or unidentified units.
Revision & archival notes
SSR-850FX is distinct from FOCUS GX-850 ATX 3.x generations. Modular side cable compatibility must be verified by exact PSU family/revision.
Capture SSR code, hardware revision and cable kit. A manufacturer family page may show later generations; use matching PDF.
Photograph the full nameplate, model/FRU, supplier, revision/date code, line selector, cable ends, mounting orientation and source-document issue. Keep observed label data separate from test results.
Manufacturer or primary references
- Seasonic FOCUS GX-850 (SSR-850FX) — manufacturer/product or primary technical referenceSeasonic FOCUS GX-850, product code SSR-850FX. Check the exact revision, region and system support information.
- Intel ATX / ATX12V Power Supply Design GuideReference for desktop ATX context only. Proprietary historical and hot-swap server outputs are not made interchangeable by ATX standards.
The specific PSU nameplate and corresponding model/service documentation remain controlling.