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header-product Power supply unit MSI MAG A550BN 550W ATX, 80 PLUS Bronze, 120 mm fan, Active PFC
52.99 €

Power supply unit MSI MAG A550BN 550W ATX, 80 PLUS Bronze, 120 mm fan, Active PFC

Fast delivery available
MSI MAG A550BN 550W ATX power supply Photo 1
MSI MAG A550BN 550W ATX power supply Photo 2
MSI MAG A550BN 550W ATX power supply Photo 3
MSI MAG A550BN 550W ATX power supply Photo 4
MSI MAG A550BN 550W ATX power supply Photo 5
MSI MAG A550BN 550W ATX power supply Photo 1
MSI MAG A550BN 550W ATX power supply Photo 2
MSI MAG A550BN 550W ATX power supply Photo 3
MSI MAG A550BN 550W ATX power supply Photo 4
MSI MAG A550BN 550W ATX power supply Photo 5
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Power supply unit MSI MAG A550BN 550W ATX, 80 PLUS Bronze, 120 mm fan, Active PFC

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Power supply unit MSI MAG A550BN 550W ATX, 80 PLUS Bronze, 120 mm fan, Active PFC

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Short description

MSI MAG A550BN is a 550 W ATX power supply for desktop PCs with 80 PLUS Bronze efficiency and Active Power Factor Correction. It features a 120 mm cooling fan, universal 100–240 V AC input, OTP protection and multiple rails (±12V, +5V, +3.3V) with specified output currents. Suitable for mid-range systems requiring stable power delivery.
Available at price 52.99 €: 19 pcs.
Total available for order: 389 pcs.
Warranty: 2 Years
SKU: 4317036
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.79 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
10.08.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
13.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 2.02 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
13.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.79 €
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Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
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Product information

Description

MAG A550BN is an entry-level computer power supply designed to offer reliable and efficient performance for gamers building their first DIY systems. The unit features 80 PLUS Bronze certification, a DC-to-DC circuit design, a 12V single rail, active PFC, and a low-noise 120 mm fan, delivering stable power without requiring additional configuration after installation.

Advantages

80 PLUS Bronze certification improves energy efficiency and reduces power consumption. The DC-to-DC circuit design enhances output voltage stability. A 120 mm sleeve-bearing fan provides effective cooling with reduced noise. Built-in protections (OCP, OVP, SCP, OPP, OTP) safeguard components, and a 5-year limited warranty ensures long-term reliability.

Key specifications

  • Certification: 80 PLUS Bronze
  • Design: DC-to-DC circuit
  • Rail: 12V single rail
  • Power factor correction: Active PFC
  • Cooling: 120 mm low-noise fan (sleeve bearing)
  • Protections: OCP, OVP, SCP, OPP, OTP
  • Warranty: 5-year limited warranty

How to use

Install the MAG A550BN into a compatible PC case, connect the main 24-pin ATX and CPU/EPS power connectors to the motherboard, and attach required peripheral and GPU power cables. Ensure proper cable routing for airflow and verify all connections before powering on. No additional software or configuration is required for standard operation.

Recommendations

For optimal performance, use the MAG A550BN with systems whose total power draw remains within the unit’s rated capacity. Maintain adequate case ventilation and periodically check the fan and dust filters to preserve cooling efficiency and reduce noise.

Specifications

80 PLUS certification:
80 PLUS Bronze
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC
Peripheral (Molex) power connectors (4-pin): White 4-pinned connector used to connect a peripheral to the power supply.
2
Motherboard power connector: The way in which the motherboard is connected to the power supply.
20+4 pin ATX
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
550 W
All features

Logistics data

Harmonized System (HS) code:
84733020

Weight & dimensions

Height: The measurement of the product from head to foot or from base to top.
86 mm
Depth: The distance from the front to the back of something.
140 mm
Width: The measurement or extent of something from side to side.
150 mm

Design

On/off switch: The button which is pressed to switch the device on or off.
Yes
Number of fans: The quantity of fans (apparatus with rotating blades that creates a current of air for cooling or ventilation).
1 fan(s)
Fan diameter: The size of the fan, measured by the distance from one side of the fan to the other, via a straight line going through the middle of the fan.
120 mm
Cooling type: The method used to cool the device or to cool the air around the device.
Active
Product colour: The colour e.g. red, blue, green, black, white.
Black

Performance

80 PLUS certification:
80 PLUS Bronze
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC

Ports & interfaces

Cabling type:
Non-Modular
ATX power connector (20+4 pin):
No
ATX Power connector (24-pin):
No
CPU power connector (4+4 pin):
Yes
PCI Express power connectors (6+2 pin):
2
EPS power connector (4+4 pin):
Yes
EPS power connector (8-pin):
No
Peripheral (Molex) power connectors (4-pin): White 4-pinned connector used to connect a peripheral to the power supply.
2
Number of SATA power connectors:
5
Motherboard power cable length:
600 mm
Motherboard power connector: The way in which the motherboard is connected to the power supply.
20+4 pin ATX

Power

Power protection features: Features that protect the device against power problems e.g. overload.
Over voltage, Over current, Over power, Overheating, Short circuit
Efficiency:
85 %
Max output current (+5Vsb):
2.5 A
Max output current (-12V):
0.3 A
Max output current (+5V):
20 A
Max output current (+12V):
45.5 A
Max output current (+3.3V):
20 A
Combined power (+5Vsb):
12.5 W
Combined power (-12V):
3.6 W
Combined power (+5V):
110 W
Combined power (+12V):
546 W
Combined power (+3.3V):
110 W
Power Factor Correction (PFC) type:
Active
Maximum input current (@220V):
4 A
Maximum input current (@110V):
8 A
AC input frequency:
50 - 60
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
550 W

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Stock data
Warehouse Stock Delivery to the store Store Price
EU57 19 10.08.2026
52.99 €
BT10 6 Thursday Best delivery
Fast shipping
54.49 €
EU2 181 Friday
54.49 €
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Available only for legal entities
Warehouse Stock Delivery to the store Store Price
WH109 27 25.08.2026
63.49 €
WH345 17 11.08.2026
65.99 €
52.99 €
Stock: 19
Delivery Date: 10.08.2026
Warehouse: EU57
Fast shipping
54.49 €
Stock: 6
Delivery Date: Thursday Best delivery
Warehouse: BT10
54.49 €
Stock: 181
Delivery Date: Friday
Warehouse: EU2
54.99 €
Stock: 32
Delivery Date: 06.08.2026
Warehouse: WH337
66.49 €
Stock: 100
Delivery Date: 11.08.2026
Warehouse: WH94
69.99 €
Stock: 2
Delivery Date: 11.08.2026
Warehouse: WH113
74.49 €
Stock: 5
Delivery Date: 11.08.2026
Warehouse: EU16
Available only for legal entities
63.49 €
Stock: 27
Delivery Date: 25.08.2026
Warehouse: WH109
65.99 €
Stock: 17
Delivery Date: 11.08.2026
Warehouse: WH345

Customer reviews

Customer questions

FAQ

How much does the MSI MAG A550BN 550W ATX power supply cost, and is it available for purchase?

The price is 52.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 389 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 10.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All MSI products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized MSI service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: 80 plus certification, power supply unit (psu) form factor, purpose, peripheral (molex) power connectors (4-pin), motherboard power connector, ac input voltage, total power, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for MSI MAG A550BN 550W ATX power supply?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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