Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Ports & interfaces | |
| ATX Power connector (24-pin) | ![]() |
| Floppy disk drive connector | ![]() |
| PCI Express connector | ![]() |
| Motherboard power connector | 20+4 pin ATX |
| Floppy drive power connector | 1 |
| Number of SATA power connectors | 5 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| EPS power connector (8-pin) | ![]() |
| ATX power connector (20+4 pin) | ![]() |
| PCI Express power connectors (8-pin) | 2 |
| CPU power connector (4+4 pin) | ![]() |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Non-Modular |
| Motherboard power cable length | 60 cm |
| EPS power connector (4+4 pin) | ![]() |
| Weight & dimensions | |
| Weight | 1.59 kg |
| Height | 86 mm |
| Width | 150 mm |
| Depth | 140 mm |
| Energy management | |
| Nominal power | 550 W |
| Efficiency | 85% |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit |
| Power Factor Correction (PFC) type | Active |
| Combined power (+3.3V) | 110 W |
| Combined power (+12V) | 546 W |
| Combined power (+5V) | 110 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 45.5 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| AC input frequency | 50 - 60 Hz |
| AC input voltage | 100 - 240 V |
| Total power | 550 W |
| Maximum input current (@110V) | 8 A |
| Maximum input current (@220V) | 4 A |
| Certificates | |
| RoHS compliance | ![]() |
| 80 PLUS certification | 80 PLUS Bronze |
| Design | |
| Product colour | Black |
| Illumination | ![]() |
| Number of fans | 1 fan(s) |
| On/off switch | ![]() |
| Cooling type | Active |
| Fan diameter | 12 cm |
| Performance | |
| Form factor | ATX |
| Purpose | PC |
| Supported motherboard form factors | ATX |
| Silent mode | ![]() |
| Power supply unit (PSU) form factor | ATX |
| Logistics data | |
| Harmonized System (HS) code | 84733020 |
| EAN | 4719072849603 |
| Warranty | 5 years |
The MSI MAG A550BN is an ATX power supply unit that provides a total power output of 550 watts for mainstream desktop systems. It holds an 80 PLUS Bronze certification, signifying up to 85% efficiency at typical operational loads, which helps to minimize heat generation and energy usage. The unit features an active Power Factor Correction (PFC) design to ensure stable and consistent power delivery to all connected components. As a non-modular PSU, all cables are permanently attached, which can streamline the installation process for builders who do not require custom cable management.
For thermal management, the A550BN utilizes a 120mm sleeve bearing fan that actively cools the internal circuitry during operation. Housed within a standard ATX enclosure measuring 150mm x 140mm x 86mm, it is compatible with a wide range of PC cases. The power supply incorporates a suite of industrial-level protections, including Over Current (OCP), Over Voltage (OVP), and Over Power (OPP), to safeguard the system from potential electrical faults. Its connector loadout supports modern components with two 6+2 pin PCIe and five SATA power connectors.
Key Features:- Provides 550W total power output
- Features 80 PLUS Bronze efficiency certification
- Built in a standard ATX form factor
- Utilizes a non-modular cable design
- Equipped with a 120mm cooling fan
- Includes two 6+2 pin PCIe connectors
- Offers five SATA power connectors
- Integrates OCP, OVP, OPP, OTP, and SCP protections
- Measures 150mm x 140mm x 86mm
- Weighs 1590g
Estimated delivery: 19.01 - 21.01
Today: 10:00 - 18:00
Estimated delivery: 19.01 - 21.01
Today: 09:00 - 17:00
Estimated delivery: 19.01 - 21.01
Today: 10:00 - 17:00
Estimated delivery: 19.01 - 21.01
Today: 10:00 - 18:00
Estimated delivery: 19.01 - 21.01
Today: 10:00 - 17:00
Estimated delivery time: 19.01 - 21.01
Estimated delivery time: 20.01 - 21.01
Estimated delivery time: 19.01 - 20.01
Estimated delivery time: 20.01 - 21.01
Estimated delivery time: 20.01
Estimated delivery time: 19.01 - 21.01
Estimated delivery time: 19.01 - 21.01
Estimated delivery time: 20.01
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- manual pdf (English)


