[ POWER CONVERSION // IDENTIFIED MODEL ]
Supermicro PWS-1K21P-1R
Supermicro PWS-1K21P-1R 1U redundant 1200 W PSU. 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 | Supermicro PWS-1K21P-1R 1U redundant 1200 W PSU |
|---|---|
| Form factor / generation | 1U redundant server PSU |
| AC input | 100–240 V AC input; use exact part label and Supermicro PSU matrix for line-current/derating. |
| DC output | 1200 W class; 12 V main and 5 V standby table is model revision-specific; label governs. |
| Dimensions / mounting | 1U hot-swap module for specific Supermicro power distribution board/chassis. |
| Connectors | IEC AC input and proprietary gold-finger blind-mate DC interface; no ATX connectors. |
| Revision distinctions | 1K21P-1R differs from SQ/acoustic suffix and 1K23A platform. Confirm suffix and board compatibility. |
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
1K21P-1R differs from SQ/acoustic suffix and 1K23A platform. Confirm suffix and board compatibility.
Use Supermicro model-specific matrix and exact nameplate; avoid copying 1K23A-SQ or 1K41P output table to this unit.
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
- Supermicro PWS-1K21P-1R — manufacturer/product or primary technical referenceSupermicro PWS-1K21P-1R 1U redundant 1200 W PSU. 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.