[ POWER CONVERSION // IDENTIFIED MODEL ]
Seasonic PRIME PX-850 (SSR-850PX)
Seasonic PRIME PX-850 Platinum, model SSR-850PX. 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 PRIME PX-850 Platinum, model SSR-850PX |
|---|---|
| Form factor / generation | ATX12V/EPS12V, 850 W Platinum |
| AC input | 100–240 V AC, 50–60 Hz; use exact label. |
| DC output | +12 V single rail 70 A class; +3.3 V/+5 V maxima and combined power per SSR-850PX output table; 850 W total. |
| Dimensions / mounting | 170 × 150 × 86 mm, ATX. |
| Connectors | Fully modular ATX main, EPS, PCIe, SATA and peripheral; verify cable kit in matching PRIME PX manual. |
| Revision distinctions | SSR-850PX is the ATX 2.x PRIME PX generation, not newer PRIME PX-850 ATX 3.x model/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-850PX is the ATX 2.x PRIME PX generation, not newer PRIME PX-850 ATX 3.x model/revision.
Save the SSR-850PX-specific manual and cable chart; similar PRIME names share neither assumed rail table nor modular lead wiring.
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 PRIME PX-850 (SSR-850PX) — manufacturer/product or primary technical referenceSeasonic PRIME PX-850 Platinum, model SSR-850PX. 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.