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The MSI MAG A550BN is a 550W ATX power supply featuring 80 PLUS Bronze certification for up to 86% efficiency, a stable 12V single-rail design, and a DC-to-DC circuit for voltage stability. Equipped with a quiet 120mm fan and comprehensive protection features, it offers dependable, energy-efficient power ideal for budget to mid-range PC builds, all backed by a 5-year limited warranty.














| ASIN | B09GW4S27Q |
| Best Sellers Rank | 260 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1 in Power Supplies |
| Brand Name | MSI |
| Compatible Devices | Personal Computer |
| Connector Quantity | 2 |
| Connector Types | ATX |
| Cooling Method | Air |
| Country of Origin | China |
| Customer Reviews | 4.6 4.6 out of 5 stars (438) |
| EU Spare Part Availability Duration | 5 Years |
| Fan Size | 120 Millimetres |
| Form Factor | ATX |
| Item Dimensions | 15 x 14 x 8.6 centimetres |
| Item Type Name | Power Supply, PSU, ATX PSU, ATX Power Supply |
| Item Weight | 1.59 Kilograms |
| Manufacturer | MSI |
| Manufacturer Part Number | 306-7ZP2A18-CE0 |
| Maximum Input Voltage | 230 Volts |
| Minimum Input Voltage | 110 Volts (AC) |
| Model Name | MAG A550BN |
| Model Number | 306-7ZP2A18-CE0 |
| Number of Fans | 1 |
| Output Wattage | 550 |
| Power Supply Design | Non-Modular |
| Product Warranty | 5 Years Limited Warranty |
| System Bus Connector Type | 20+4 Pin |
| Unit Count | 1.00 count |
| Wattage | 550 watts |
A**R
Reliable Power Supply – Great Value for Money
The MSI MAG A550BN is a solid and reliable power supply. Installation was straightforward, and it provides stable power with no issues so far. It’s been running quietly, even under load, which is a big plus. The build quality feels good for the price, and the cables are decent quality and long enough for a standard mid-tower case. At 550W, it’s more than sufficient for a typical gaming or everyday PC build. Overall, this is a dependable and affordable power supply from a trusted brand. Ideal for budget or mid-range systems, and I’d happily recommend it.
E**R
Reliable power supply
Good quality power supply that works exactly as expected. It was easy to install and fit into the case, and everything powered up without any issues. It runs quietly and feels solidly built, and the 550W capacity is plenty for a typical PC build. Overall a reliable PSU and good value for the price.
T**R
power up your pc
iv been watching this item as it represents good quality high performance and great price,packaging is outstanding and received in perfect condition now down to fitting the fan it is very easy to swap over.when running very quite. it was suited to my msi mother board,its has 2 pcie cables as well the general cables so now I can now upgrade my internal graphics card not as an extra on some power units and cost more,original power unit 500watts this has 550watt and appears to be faster on start up and graphics better and stable.
K**S
Nice first PSU for my matx build
Cheapest 550w I could find that had an 80+ bronze rating, it fits in an matx case the cables are very long abit too long which is a problem with a small case, very easy to install with only 4 screws, works great as a power supply from a trustworthy company.
F**E
A no brainer
Not much to say. One of the very best budget power supplies literally of all time. I have never had issues with this, and have always loved to work with them. With a premium name such as MSI comes a premium building experience and also a premium feel with the cable length, ability to manage cables with ease and also great connectivity, only missing the very newest ATX 3.1 connector. The cables are a nice pure black which ties in with all black builds, and the actual internals are good quality, passing all the tests on my PSU tester. *** 5 stars *** My Star Rating: ★★★★★ | No brainer - Top product. Not only do I like it, but it’s well worth it, IMHO ★★★★☆ | Like it - Great product and value for money. I'm happy with this. ★★★☆☆ | OK - Product is average. Nothing wrong, but I’d probably be looking for a sale ★★☆☆☆ | Hmmm… - Not worth the price, functional but nothing better than mediocre ★☆☆☆☆ | Avoid - Very Poor Quality item not fit for purpose. I wouldn’t buy it at any price.
C**H
Good power supply and quiet.
Quiet and works efficiently, I replaced the power supply on my computer because I did a graphic card upgrade and this one did the job very well. It was on a offer as well at the time.
T**Y
Powering Up Peace of Mind: My MSI MAG A550BN Review
Tired of PSU nightmares? Say hello to the MSI MAG A550BN – the budget-friendly hero that brought stability and silence to my PC. Here's why I'm loving it: Rock-Solid Power: 550W of 80 Plus Bronze certified goodness keeps my rig humming smoothly, even during intense gaming sessions. No more power spikes or jitters, just reliable performance. Whisper-Quiet: The 120mm fan stays surprisingly quiet, even under load. No more annoying PSU whirring to drown out your game audio. It's like adding a noise-cancelling feature to your PC! Built to Last: DC-to-DC circuits, single-rail design, and a comprehensive suite of protections give me peace of mind knowing my precious components are safe and sound. Plus, the 5-year warranty shows MSI stands behind their product. Easy Install, Even for Noobs: Non-modular cables might not be for everyone, but the straightforward layout and included accessories make installation a breeze. Even a first-time builder like me managed it without breaking a sweat. The Verdict: This PSU punches way above its weight. If you're building a budget-conscious PC without sacrificing performance or peace of mind, the MSI MAG A550BN is a no-brainer. It's quiet, reliable, and won't break the bank. 5 out of 5 stars! Bonus Tip: For extra cable management magic, invest in some PSU cable extensions. Your case will thank you for it. I hope this review helps! Let me know if you have any other questions about the MSI MAG A550BN or your build in general. Bard may display inaccurate info, including about people, so double-check its responses.
W**N
Does the job cost effectively
I seem to have been using MSI components a bit more recently as they seem to present a reasonable price performance point. The PSU went into my son's Bazzite build - a new PC to replace his old Win 10 one. It gets daily and heavy use and the PSU has been as good as gold since the machine was commissioned into use, including powering a Radeon 6400XT GPU and 5600X based mobo etc. The cabling is not modular but I am fine with that at this price point and I just spent a bit of time securing spare power connectors when I cabled up all the various connections I needed on the build. Plugs and sockets are all decent quality and fit nicely into their opposite numbers as you would expect. I found cable lengths to be fine for the build I was doing. Fan noise is reasonable - by no means silient but not sounding like a hovercraft when under load either. I liked this enough to order another for my existing PC when the 12v auxiliary rail in my existing PSU failed recently and like the first one its been absolutely fine to date.
M**L
The MSI MAG A550BN is a reliable and efficient power supply. It runs quietly, delivers stable performance, and is perfect for gaming builds. Very satisfied with the quality and value!
L**I
I bought this power supply to replace my sister's power supply on her PC. This is the best PSU I could find within our budget range. It may be budget but it still has the specifications that I'm looking for like * 80 Plus Bronze certified for high efficiency * 120mm Low Noise Fan * All black cables also, the build quality of this power supply matches the quality of those power supplies around $100.
R**.
Rated C tier on the PSU Cultist list so you know it's reliable. It's pretty cheap and covers gaming at 1080p with ease, if you don't mind a non-modular power supply this is a good choice. Only downside for me were the screws were a bit finnicky and tight when installing it in the case, but it was fine after some trial and error.
M**P
Very good product and packing also safe and good..
T**D
This power supply is the best reliable power supply In the market mine never broke for over 5 years and this seller is not cheating either instead the best price ever!
Trustpilot
1 month ago
1 week ago