Overview

MSI MAG A550BN 550W Power Supply - 80 Plus Bronze Certified
The MSI MAG A550BN 550W is an entry-level ATX power supply designed to deliver reliable performance with excellent efficiency. Built with an active PFC design, low-noise cooling, and comprehensive safety protections, it provides gamers and PC builders with a solid foundation for smooth system operation.

Description

This 550W 80 Plus Bronze power supply offers optimized efficiency, a quiet 120mm cooling fan, and industrial-grade protections to ensure system stability. With multiple connectors including PCI-e, SATA, and peripheral options, it supports modern gaming and DIY builds while maintaining low power consumption and dependable output.

Features

Key Highlights

• 80 Plus Bronze certification
• 120mm low noise cooling fan
• OVP, OCP, OPP, OTP, SCP safety protections
• DC-DC circuit design for stable output
• Active PFC power efficiency

Reliable Entry-Level Power Supply
The MAG A550BN is built for gamers and DIY enthusiasts seeking a safe and dependable power option. With its energy efficiency, quiet cooling, and single-rail 12V design, it ensures smooth power delivery and stable system performance. Ideal for beginners, it requires no complicated setup after installation.

Energy Efficiency with 80 Plus Bronze
Efficiency plays a key role in system stability and energy savings. The 80 Plus Bronze certification guarantees lower power consumption and improved performance, reducing wasted energy during operation.

Silent Cooling with 120mm Fan
Equipped with a sleeve-bearing 120mm fan, the unit delivers effective heat dissipation while minimizing noise, keeping your system cool without unnecessary sound.

Stable Power with DC-DC Circuit Design
The DC-DC circuit architecture enhances voltage regulation and reduces power fluctuations. This ensures consistent performance, particularly under demanding workloads.

Full Protection for Safe Operation
The MSI MAG A550BN comes with OCP, OVP, SCP, OPP, and OTP protection mechanisms. These safeguards defend your system from overcurrent, overvoltage, short circuits, power overloads, and overheating.

Technical Specifications

• Wattage: 550W
• Certification: 80 Plus Bronze
• Form Factor: ATX
• Fan: 120mm low-noise
• Connectors:
  • 1x 20+4 pin ATX
  • 1x 4+4 pin EPS
  • 2x 6+2 pin PCI-e
  • 5x SATA
  • 2x Peripheral Molex
  • 1x FDD

Specifications

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Specifications
Product Code	MAG A550BN
PRODUCT NAME	MAG A550BN
POWER WATT	550W
INPUT VOLTAGE	100-240Vac
INPUT CURRENT	115Vac/8.0A max. 230Vac/4.0A max.
INPUT FREQUENCY	50Hz ~ 60Hz
EFFICIENCY	Up to 85% (80 Plus Bronze)
PSU FORM FACTOR	ATX
FAN SIZE	120 mm
DIMENSION	150mm x140mm x86mm
PFC TYPE	Active PFC
PROTECTION	OCP / OVP / OPP / OTP / SCP
ATX(20+4 PIN)	1
EPS(4+4 PIN)	1
PCI-E(6+2 PIN)	2
SATA	5
MOLEX(PERIPHERAL)	2
FDD	1