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Overview

Power your desktop build with the MSI MAG A550BN 550W Power Supply. Designed for reliable everyday and gaming performance, this compact non-modular PSU features 80 Plus Bronze efficiency, active PFC design, and a low-noise fan for stable, efficient, and quieter operation.

MSI MAG A550BN 550W Power Supply - 80 Plus Bronze, Non-Modular Compact PSU, Low-Noise Fan, Active PFC

Model: MAG A550BN
Web Code: 19827624
Sold and shipped by | 4.3 seller rating (327 reviews)

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Available for deliveryAvailable online only

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Seller Return Policy

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Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

The MSI MAG A550BN 550W Power Supply is a dependable choice for powering gaming PCs, home desktops, and everyday productivity systems. With 550 watts of output, it provides the stable power needed for a wide range of mainstream builds while maintaining efficient performance through its 80 Plus Bronze certification.

Built in a compact form factor, this power supply is well suited for desktop cases where space and cable routing matter. Its non-modular design offers a straightforward installation setup, while the low-noise fan helps maintain cooling performance with reduced sound during regular use. The active PFC design supports improved power efficiency and reliable power delivery for consistent system operation.

Whether you are upgrading an older system or building a new PC, the MSI MAG A550BN offers an excellent balance of efficiency, reliability, and value for daily computing and entry to mid-level gaming needs.

550W power output supports mainstream desktop and gaming PC builds

80 Plus Bronze certification helps improve energy efficiency

Non-modular design provides simple and dependable installation

Compact PSU size fits a wide range of compatible desktop cases

Low-noise fan helps maintain cooling with quieter operation

Active PFC design supports stable and efficient power delivery

Ideal for PC upgrades, custom builds, and everyday system performance

Product Condition
Brand New

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

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Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Computer components
Return/Exchange Period
30 days
Condition
Unopened

We can only acceept returns that are in their original packaging and do recommend customers check manufacturer's warranties for exclusions.

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