[ ATX DESKTOP EXACT MODELS // IDENTIFIED UNIT ]
Corsair RM550x (2021)
Exact model record for Corsair identifier CP-9020197. Published ratings below are a model-family reference, not a substitute for the individual unit’s rating label and revision documentation.
SAFETY: Never open a PSU or probe its interior. Dangerous voltage can remain after unplugging; if damaged, wet, noisy, burned, or unstable, disconnect it and replace it with a verified compatible unit. For server hot-plug models, use only the host service procedure and confirm redundancy before removal.
Recorded model specifications
| Exact catalog identifier | Corsair CP-9020197. Match all suffixes, assembly and revision markings on the actual label. |
|---|---|
| Form / rated output | ATX 2.4, fully modular; manufacturer-rated total continuous output class: 550 W. Peak/transient capacity, temperature derating, and combined-rail limits remain specification-revision dependent. |
| AC input rating | 100–240 V AC, 10–5 A, 47–63 Hz. Region, temperature, and load may change the nameplate current; use the unit's own label for installation. |
| DC rail reference | Main +12 V rail: 45.8 A (550 W class). +3.3 V / +5 V: +3.3 V 20 A, +5 V 20 A; combined 100 W. Actual combined limits and auxiliary/standby outputs must be checked on the model-specific output table. |
| Connectors / system interface | ATX 24-pin, EPS12V 4+4-pin, PCIe 6+2-pin; modular sockets are Corsair-specific. |
| Mechanical envelope | 150 × 86 × 160 mm (width × height × depth where applicable). Check manufacturer's mounting drawing, screw locations, grille/fan clearance, cable bend radius, and chassis tolerances; never use nominal dimensions alone to force-fit a unit. |
| Standards / revision caveat | 80 PLUS Gold; ATX12V 2.4; exact cable set is generation-specific. Connector standards, efficiency certification, and mechanical form factor are different things. ATX, ATX12V, SFX, TFX, Flex ATX, and OEM interfaces are not interchangeable merely because they fit. |
Replacement & compatibility
- Read exact manufacturer model/SKU, DC output table, AC input, hardware revision, date code, and applicable service manual from the physical unit. The same family name can cover materially different revisions.
- For ATX-family units, confirm motherboard/EPS/PCIe connector count and pinout, total and per-rail limits, chassis size, clearances, and GPU transient/cable requirements. For proprietary OEM units, match the exact machine type, FRU/assembly number, keyed connector and service documentation.
- Use only modular cables explicitly qualified for this exact PSU model and revision. Modular PSU-side pinouts are not standardized; never transfer cables from a different supply based only on physical fit.
- Never use an unverified pin adapter to bridge proprietary pinouts. Replacing a PSU cannot correct a damaged motherboard, shorted load, or unsuitable mains circuit.
Revision and documentation notes
2021 RMx revision; do not substitute cables from older RMx or newer RMx Shift families. Ratings shown are the source-backed nominal model reference; manufacturer documentation can change with regional SKU, revision, certification listing, or replacement part. Confirm all figures against the exact source manual and the PSU label before purchasing or servicing. AC/DC figures on this archive do not describe internal topology or guarantee used-unit condition.
Sources & further reading
- Manufacturer or model reference: Corsair RM550x (2021) (CP-9020197)Primary product/manual listing for the named model; verify that its exact suffix matches this record and the unit label.
- Intel ATX desktop power supply design guide (where ATX applies)Standards context only; does not certify this SKU or apply to proprietary server/legacy interfaces.
- Corsair modular-cable compatibility chart (illustrative; use the named PSU maker’s exact list)Illustrates manufacturer-specific PSU cable rules; use the named PSU brand's exact compatibility list.
Specifications here are not a substitute for the manufacturer’s model-specific manual, label, chassis service guide, or electrical safety regulations. Where a generic family webpage conflicts with the exact unit label/manual, the label and specific manual control.