MSI MAG A550BN 550W 80 PLUS Bronze ATX Power Supply

The MSI MAG A550BN is a reliable and efficient power supply unit designed for mainstream gaming and office PCs. With 550W continuous output and 80 PLUS Bronze certification, it delivers stable power with up to 85% efficiency under typical loads. The unit features Active PFC, a 120mm sleeve bearing fan, and comprehensive protections including OVP, OCP, OPP, OTP, SCP, and UVP. Its non-modular design ensures straightforward installation, while the 100,000-hour MTBF guarantees long-term durability.

Advantages

High efficiency reduces energy waste and heat generation. Active PFC ensures stable operation across varying input voltages. The 120mm fan provides quiet cooling under normal loads. Multiple protection circuits safeguard your components against electrical faults.

Suitable for

• Entry to mid-range gaming PCs
• Office and home computers
• Systems with single GPU configurations

Key specifications

• Power Output: 550W
• Efficiency: 80 PLUS Bronze
• Form Factor: ATX
• PFC Type: Active PFC
• Fan Size: 120mm
• Fan Bearing: Sleeve Bearing
• Modularity: Non-Modular
• Main Power Connector: 1x 24-pin ATX
• CPU Power Connector: 1x 4+4-pin EPS
• GPU Power Connectors: 2x 6+2-pin PCIe
• SATA Power Connectors: 5
• Peripheral Power Connectors: 2x 4-pin Molex
• AC Input Voltage: 100-240V
• AC Input Current: 10A
• AC Input Frequency: 50-60Hz
• +12V Rail Output: 45.8A (549.6W)
• Protections: OVP, OCP, OPP, OTP, SCP, UVP
• MTBF: 100,000 hours
• Operating Temperature: 0-40°C
• Certifications: CB, CE, cTUVus, FCC, TUV, RCM, CCC, EAC, UKCA

Recommendations

For optimal performance, pair this power supply with a compatible ATX case and ensure adequate airflow. Ideal for systems with a single graphics card and moderate power demands.