MSI MAG A550BN 550W ATX Power Supply Unit

Power your everyday system with the MSI MAG A550BN 550W ATX Power Supply. This unit is 80 PLUS Bronze certified, delivering efficiency up to 86% at typical loads to help reduce energy consumption and operating costs. It features a non-modular design with pre-attached cables for straightforward installation and fewer potential failure points, supporting budget office PCs, home theater setups, and entry-level 1080p gaming rigs. The MAG A550BN includes a built-in 120mm liquid bearing fan for cooling and maintains quiet operation, generating less than 30 dBA under normal use. It is built with high-temperature resistant capacitors and surge circuit shielding, and supports a comprehensive protection suite to safeguard components in line with Intel ATX safety standards. The PSU provides essential connectors and a solid foundation for reliable builds while offering MSI’s multi-core protection technologies and a five-year limited warranty.

Key features

• 550W power for mid-range builds
• 80 PLUS Bronze efficiency up to 86%
• 120mm sleeve-bearing fan for quiet cooling
• Non-modular with pre-attached cables
• Protection: OCP, OVP, OPP, UVP, SCP
• 5-year MSI warranty

Technical specifications

• 12V single-rail design for stable output
• DC-to-DC circuit reduces voltage instability
• Active PFC and surge circuit shielding