MSI MAG A550BNL power supply unit 550 W 24-pin ATX ATX Black

The MAG A550BNL is a 550 W ATX power supply designed for gaming PCs, combining military-inspired styling with durable construction. It delivers stable power to all system components, supports 100–240 V input at 50/60 Hz and features flat black cables for easier cable management.

Advantages

The unit holds an 80 PLUS Bronze efficiency rating to reduce energy consumption and improve overall efficiency. Built-in protection design safeguards the power supply and connected components. Temperature adaptation enables reliable operation under high thermal load, while a 120 mm low-noise fan provides effective cooling with reduced sound levels.

Key specifications

• Rated power: 550 W
• Input voltage: 100 - 240 V, 50/60 Hz
• Efficiency certification: 80 PLUS Bronze
• Motherboard connector: 24-pin ATX
• Cooling: 120 mm low-noise fan
• Cable type: flat black cables
• Form factor: ATX
• Color: Black

How to use

Install the MAG A550BNL into a compatible ATX case and secure it with the supplied screws. Connect the 24-pin ATX main power connector to the motherboard and attach the required peripheral and CPU/GPU power cables according to component specifications. Ensure input voltage settings match your local mains supply (100–240 V is supported). Provide adequate airflow in the case to allow the 120 mm fan to maintain cooling efficiency.

Recommendations

For reliable system operation, pair the MAG A550BNL with components whose combined power draw stays safely below 550 W. Regularly check cable connections and keep the ventilation paths clear of dust to maintain cooling performance and prolong the unit’s lifespan.