⚡ Power up quietly, game on confidently!
The MSI MAG A550BN is a compact, non-modular 550W power supply designed for efficient and quiet operation. Featuring 80 PLUS Bronze certification, a low-noise fan with semi-passive mode, and a 5-year warranty, it delivers reliable power for mid-range gaming and professional PC builds.





| ASIN | B0991W1HKT |
| Best Sellers Rank | #19 in Computer Power Supplies |
| Brand | msi |
| Compatible Devices | Personal Computer |
| Connector Type | ATX |
| Connector Type Used on Cable | ATX |
| Cooling Method | Air |
| Customer Reviews | 4.7 out of 5 stars 4,558 Reviews |
| EU Spare Part Availability Duration | 5 Years |
| Form Factor | ATX |
| Global Trade Identification Number | 00824142258392, 04719072849603 |
| Item Dimensions | 5.91 x 5.51 x 3.39 inches |
| Item Height | 8.6 centimeters |
| Item Weight | 2 Kilograms |
| Manufacturer | MSI |
| Maximum Input Voltage | 240 Volts (AC) |
| Minimum Input Voltage | 100 Volts (AC) |
| Model Name | FBAMSIA550BN |
| Number of Fans | 1 |
| Output Wattage | 550 |
| Power Supply Design | Non-Modular |
| System Bus Connector Type | 24 Pin ATX |
| UPC | 824142258392 |
| Unit Count | 1.0 Count |
| Warranty Description | 10 Year Limited Manufacturer |
| Wattage | 550 watts |
F**O
Efficient and high quality
It works perfectly and is great value for money, I love it
M**.
Quiet power and meets my needs exactly
I replaced a 430 watt supply with this one. It might be overkill but it's working fine and temps all look good. I was concerned about the fan barely moving air but don't panic! It has semi-passive/zero RPM mode when it is operating in low load / temp. 650 watts are not struggling in my system at all. I'm not running a cutting edge gamer box and your needs might be greater.
H**N
Works perfectly
I've had 0 problems with it and it was super cheap. Makes almost no noise. The cables are a bit stiff
D**O
Works in old prebuilts.
Fixed a friends old dell computer. Swapped out a eight year old power supply with this thing in about a hour and the computer works perfectly. MSI makes good power supplies as it "feels" durable.
B**S
Solid Budget PSU for a Homelab or Server Build
I’m using the MSI MAG A650BN 650W (80+ Bronze) power supply in a small homelab server, and it’s been reliable with no issues. The system runs 32GB of DDR4 RAM, an AMD Ryzen 5 CPU, and an underclocked RTX 3060 Ti, and the PSU handles the load without any instability. Even though it’s non-modular, cable management was manageable, and the unit runs quietly, which is important for a server that stays on for long periods. Power delivery has been consistent, and I haven’t experienced any random shutdowns or power-related problems. For a budget-friendly power supply, the build quality feels solid and dependable. If you’re putting together a homelab, NAS, or server that doesn’t need premium features but still requires stable power, this has been a great choice. My only complaints come down to it not being modular, but as long as you know that going in you should be fine.
M**H
Well constructed and look good too.
Looks to be well constructed like all the rest of their products. The video cards, main board and now power supply. Very good choice for today's power hungry devices. Looks good too.
M**A
Reliable and Efficient - MSI MAG A650BN Delivers
I recently upgraded my gaming setup with the MSI MAG A650BN Power Supply, and it's been an excellent decision. This 650W PSU is 80 Plus Bronze certified, which was a major selling point for me. It means the unit is not only energy efficient but also reliable in power delivery, a crucial aspect for gaming rigs. The compact size of the MSI MAG A650BN is a big advantage. It fits easily into my gaming case, leaving ample room for airflow and other components. Despite its smaller size, it packs a punch in performance, handling my gaming load without any issues. The build quality is solid, giving me confidence in its durability and long-term performance. It runs quietly, even under load, which is a pleasant surprise and adds to a more immersive gaming experience. Another aspect I appreciate is the range of connectors and the length of the cables. They are sufficient for a clean and organized setup, allowing for easy cable management. Overall, the MSI MAG A650BN Gaming Power Supply is a top-notch choice for gamers or anyone building a PC who needs a reliable, efficient, and compact power supply. It offers great value for its features and performance, and I highly recommend it.
M**N
Modular
Works like it should.
Trustpilot
2 weeks ago
1 day ago