MSI MAG A550BN 550W 80 Plus Bronze Power Supply
The MSI MAG A550BN is a 550W 80 PLUS Bronze-certified, non-modular ATX power supply designed for compatible desktop and entry-level gaming PC builds. Featuring DC-to-DC conversion, Active PFC, a 120mm low-noise fan and comprehensive electrical protections, it offers efficient power delivery in a compact black design.
Key Features
| Feature | Details |
|---|---|
| 550W Power Output | Single +12V rail delivering up to 546W on the +12V output. |
| 80 PLUS Bronze | Certified efficiency, with up to 85% efficiency specified by MSI. |
| DC-to-DC Circuit | Designed to improve output voltage stability. |
| 120mm Low-Noise Fan | Sleeve-bearing cooling fan for heat dissipation. |
| Active PFC | Active Power Factor Correction circuitry. |
| Electrical Protections | OCP, OVP, OPP, OTP and SCP. |
Technical Specifications
| Specification | Details |
|---|---|
| Brand | MSI |
| Series | MAG |
| Model | MAG A550BN |
| Power Output | 550W |
| Form Factor | ATX |
| Efficiency Certification | 80 PLUS Bronze (Up to 85%) |
| Modularity | Non-Modular |
| Cooling Fan | 120mm |
| Fan Bearing | Sleeve Bearing |
| Input Voltage | 100–240V AC |
| Input Current | 8A Max. at 115V / 4A Max. at 230V |
| Input Frequency | 50–60Hz |
| Power Conversion | DC-to-DC |
| Power Factor Correction | Active PFC |
| +12V Rail | 45.5A / 546W |
| Motherboard Connector | 1 × 20+4-Pin ATX |
| CPU Connector | 1 × 4+4-Pin EPS |
| PCIe Connectors | 2 × 6+2-Pin |
| SATA Connectors | 5 |
| Molex Connectors | 2 |
| FDD Connector | 1 |
| Protections | OCP / OVP / OPP / OTP / SCP |
| Dimensions | 140 × 150 × 86mm (D × W × H) |
| Colour | Black |
