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020 3337 8950MSI MAG A550BN 550W ATX 80 PLUS Bronze PSU Power Supply
Get it Tue, 9th Jun! Order within 2 hrs 9 mins
Get standard delivery within 3-4 working days
Book your delivery slot from only £6.95
- 550 W Wattage
- Non-Modular
- 80 PLUS Bronze
- Fan Size: 1 x 120mm
- Black Colour
- 5 Years Warranty
- MAG A550BN
- 20+4-pin ATX
Product Overview
The MSI MAG A550BN 550W ATX 80 PLUS Bronze PSU Power Supply is designed to provide reliable and efficient power for everyday computing needs. This power supply unit (PSU) has a power output of 550 watts, which is sufficient for supporting a wide range of mid-range to entry-level PC builds. The inclusion of an 80 PLUS Bronze certification means that this power supply operates with a high level of energy efficiency, generating less heat and subsequently reducing power costs over time.
What Makes It Different?
The MSI MAG A550BN differentiates itself from similar offerings in the market by combining robust performance with an appealing price point. Its focus on reliability and efficiency makes it a strong choice for users looking for a dependable solution without venturing into higher-tier prices. This makes it particularly suitable for budget-conscious customers who prioritise solid functionality and energy savings.
While higher-tier PSUs may offer more wattage or additional features such as modular cables, the MAG A550BN maintains simplicity and effectiveness, making it a practical choice for everyday computing tasks. Its straightforward design ensures ease of installation and compatibility with standard ATX cases, ensuring it fits seamlessly into most systems.
Performance & Everyday Use
With a 550W power output, the MSI MAG A550BN is well-equipped to handle the energy demands of typical desktop applications, including gaming, office work, and general multimedia consumption. It provides stable power delivery to your system components, ensuring that your CPU and GPU perform optimally during everyday tasks. This PSU is especially suited for setups that do not require extreme levels of performance, such as those with integrated graphics or lower-tier dedicated graphics cards.
Thanks to the 80 PLUS Bronze certification, users can expect enhanced energy efficiency, which translates to less wasted energy and lower heat generation. This means that you can operate your computer for longer periods without worrying about excessive overheating. The PSU is designed to minimise noise output as well, contributing to a quieter user experience.
Measuring 150 mm x 86 mm x 140 mm, the compact dimensions of the MAG A550BN make it a fitting choice for mid-tower and full-tower cases while also allowing for easier cable management. With a five-year warranty backing it up, customers can have confidence in the longevity and reliability of this product for everyday use.
Why Choose This MSI MAG A550BN?
For those seeking a reliable and efficient power solution for their computers, the MSI MAG A550BN serves as an excellent option.
- 80 PLUS Bronze certification for energy efficiency and cost savings
- 550W output suitable for everyday computing and mid-range setups
- Compact design for ease of installation in standard ATX cases
- Five-year warranty for peace of mind and reliability
However, it may not cater to high-performance gaming systems or advanced workstation builds.
- Users requiring higher wattage for demanding gaming or professional applications may need a more powerful PSU
- Those interested in modular or fully modular options might consider higher-tier alternatives
- Power users with multiple GPUs or extensive hardware may require a different specifications set
- Professionals seeking advanced features and robust performance should explore higher-tier models
Great For
The MSI MAG A550BN is ideally suited for everyday users who engage in casual gaming, office work, or general multimedia tasks. This power supply strikes a balance between efficiency and capacity, making it an excellent fit for anyone looking to build a reliable yet reasonably priced system.
- Everyday administrative tasks and browsing
- Office work and productivity applications
- Causal gaming and multimedia playback
- Mid-range PC builds and budget-conscious configurations
Specifications
Condition
| Condition | New |
Product Identifiers
| Sku | MAG A550BN |
| MPN | MAG A550BN |
| EAN | 4719072849603 |
| Type | Power Supply |
| Brand | MSI |
| Series | MAG |
| Model | MAG A550BN |
General
| Warranty | 5 Years |
| Colour | Black |
| Dimensions | 150 mm x 86 mm x 140 mm (WxHxD) |
Other Specifications
| Warranty | 5 Years |
| Colour | Black |
Model Information
| Brand | MSI |
| Model | MAG A550BN |
| Most Suitable For | Everyday Use |
From Manufacturer
Reviews
MSI MAG A550BN verified by feefo
Average rating based on 25 reviews

Guest
Published on
26-Jan-2026
1 part of the order did not arrive. Had to call up customer support to be told it was delayed. No available eta from customer support.

Trusted Customer
Published on
13-Jan-2026
Perfect to fix my elderly PC which required cables for floppy disc, DVD drives as well as SATA SDD & HDD.

Published on
09-Jan-2026
It arrived and certain parts of the plastic material where cracked but it works fine and no one sees it so ig I’ll keep it

Cameron
GBR
Published on
10-Dec-2025

Trusted Customer
Published on
09-Dec-2025
£41.95
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