Description
Meet the ASUS Prime B550M-A (Wi-Fi) II, Perfect for everyday users who want the same stable performance in a smaller form factor. expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen processors. Ram-packed with features like the ground-breaking PCI-E 4.0 technology to give you lightning speeds, a robust power design, USB 3.2 Gen2 Type-A Rear IO connectivity, ASUS AURA RGB Header, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.
AMD B550 Chipset
AM4 CPU Socket
3rd Gen Ryzen Compatible CPU
M-ATX Form Factor
Tweak and Tune Your Way
Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work – maximising your productivity.
ALL-AROUND ENERGY EFFICIENCY
The Energy Processing Unit (EPU) automatically optimises your power consumption and maximizes energy savings with a simple Away mode — a smart setting that creates an extreme energy-saving scenario by shutting down any unused I/O controllers.
World Renowned UEFI BIOS
The renowned ASUS UEFI BIOS provides everything you need to configure, tweak and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.
ADVANCED MODE
An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various Advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.
Keep your Components Cool for Longer
A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance.
Incredible Speeds with PCIe 4.0 Technology
PCIe 4.0 M.2 Slot supports up to 22110 and provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on AMD Ryzen™ 5000 Series/ 3000 Series Processors.
ASUS SafeSlot Protection
SafeSlot Core is the ASUS-exclusive PCIe slot. Featuring a fortified design that’s anchored to the motherboard by a special hook, SafeSlot Core provides 1.6x stronger retention and 1.3x greater shearing resistance than standard expansion slots.
STRENGTHENED SOLDER POINTS
Strengthened solder points around the PCIe and DIMM pins.
Superspeed Your Network
Wi-Fi 6 module is compatible with the 802.11ax standard and pushes theoretical peak bandwidth up to an incredible 2.4 Gbps. Perhaps more importantly for power users, it’s optimized for more efficient operation on crowded networks with a lot of competing traffic. Pair your motherboard with ASUS WiFi 6 routers to fully experience the networking potential of WiFi 6.
Connections at your Fingertips
Little Things Make a Big Difference
Prime B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive RGB lighting controls that let you customize your system to create a uniquely personal look.
OVERVOLTAGE PROTECTION
An exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
DRAM OVERCURRENT PROTECTION
On-board resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard the lifespan of your system and connected devices.
STAINLESS-STEEL BACK I/O
Corrosion-resistant stainless-steel back I/O panels bonded with chromium oxide have a lifespan that’s three times longer than ordinary panels.
LANGUARD
ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.
PRIME B550M-A (Wi-Fi) Tried and Tested
ASUS motherboards offer superb endurance verified by subjecting every board to more than 8,000 hours of stringent tests. A barrage of burn-in, environmental, compatibility, software and safety tests confirm that our motherboards are exceptionally robust. It also shows that ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.
TEMPERATURE AND HUMIDITY TESTS
Ensures components withstand extreme conditions.
THERMAL MEASUREMENT TESTS
Ensures that the system remains cool and stable under the heaviest loads.
INSERTION TESTS
AGING TESTS
Up to 48-hour aging test ensures reliability.
POWER-CONSUMPTION TESTS
Delivers world-class energy efficiency.
TEMPERATURE AND DC MARGIN TESTS
Ensures that the motherboard is capable of coping with voltages fluctuations caused by varying temperatures.
THERMAL-SHOCK TESTS
Ensures ability to survive temperature changes during transportation.
NON-OPERATION SHOCK TESTS
Built to withstand jolts that may occur during shipping.
BURN-IN TESTS
Every component is checked to ensure flawless operation.
INSTALLATION TESTS
Connector placement is double-checked to ensure hassle-free installation.
DROP TESTS
Drop tests from various heights ensure durability.
SALT AND SPRAY TESTS
Tested for I/O reliability, prolonged lifespan and rust-resistance.
| SPECIFICATIONS | |
| Brand | ASUS |
| Series | Socket AM4 |
| Model | PRIME B550M-A WIFI II |
| CPU | AMD Socket AM4 Ryzen 3000, 4000, 5000-series CPUs |
| Chipset | AMD B550 |
| Memory Support | |
| Ryzen 3000, 4000, 5000-series CPUs | 4 x DIMM, Max. 128GB, DDR4 4866(OC)/4800(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133, Un-buffered Memory |
| Expansion Slots | |
| CPU Direct (Ryzen 5000, 5000G, 3000, 4000G-Series) | 1x PCIe 4.0 x16 Physical, x16 Electrical, backwards compatible to PCIe 3.0 |
| AMD B550 Chipset | 2x PCIe 3.0 x1 |
| Storage | |
| CPU Direct (Ryzen 5000, 5000G, 3000-Series) | M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes) |
| Ryzen 5000G/4000G-Series: M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)* | |
| AMD B550 Chipset | M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes) |
| 4 x SATA 6Gb/s ports | |
| Support RAID 0, 1, 10 | |
| Networking | |
| LAN | Realtek Gigabit RJ-45 Ethernet |
| ASUS LANGuard | |
| WiFi | WiFi 6 2×2 MIMO 2.4/5.0 Dual-Band Adapter |
| NOTE: Band Steering is supported. | |
| Bluetooth | Bluetooth 5.2 |
| Audio | |
| Codec | ALC887/897 |
| Features | Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking |
| Supports up to 24-Bit/192 kHz playback | |
| Audio Shielding | |
| LED-illuminated audio trace path design | |
| Premium audio capacitors | |
| Dedicated audio PCB layers | |
| Rear I/O | |
| Ports | 2x USB 3.2 Gen 2 10Gbps Type-A |
| 4x USB 3.2 Gen 1 5Gbps Type-A | |
| 1x VGA D-Sub | |
| 1x DVI-Digital | |
| 1 x HDMI 2.1 | |
| 2x SMA Connectors | |
| 1x RJ-45 Gigabit Ethernet | |
| 3x 3.5mm Audio Jacks | |
| 1x Combination PS/2 | |
| General | |
| Internal Connectors | 1x 4-pin CPU Fan header |
| 1x 4-pin CPU OPT Fan header | |
| 2x 4-pin Chassis Fan headers | |
| 1x 24-pin Main Power connector | |
| 1x 8-pin 12V Power connector | |
| 2x M.2 slots (Key M) | |
| 4x SATA 6Gb/s ports | |
| 1x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports | |
| 2x USB 2.0 headers support additional 4 USB 2.0 ports | |
| 1x Addressable Gen 2 header | |
| 2x AURA RGB headers | |
| 1x Clear CMOS header | |
| 1x COM Port header | |
| 1x Front Panel Audio header (AAFP) | |
| 1x S/PDIF Out header | |
| 1x Speaker header | |
| 1x SPI TPM header (14-1pin) | |
| 1x 10-1 pin System Panel header | |
| Remote Management | WOL by PME, PXE |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
| Form Factor | Micro-ATX Form Factor, 244 x 244mm |
| Operating System Support | Windows 10 64-bit |
| Windows 11 64-bit | |
| Features | ASUS Q-DIMM |
| ASUS Q-Slot | |
| ASUS Thermal Solution | |
| M.2 heatsink | |
| AURA Sync | |
| AURA RGB headers | |
| Addressable Gen 2 RGB headers | |
| ASUS EZ DIY (CrashFree BIOS 3, EZ Flash 3) | |
| ASUS SafeSlot Core | |
| ASUS Armoury Crate | |
| ASUS AI Suite 3 | |
| Box Contents | 2x SATA Data cables |
| 1x ASUS WiFi antennae | |
| 1x M.2 SSD screw package | |
| Support DVD | |
| User manual | |
| Warranty Information | |
| Warranty | 3 Year Warranty |
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