ASUS PRIME B550M-A WIFI II
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ASUS PRIME B550M-A WIFI II
The ASUS Prime series is expertly engineered to unlock the full potential of the AMD Ryzen 5000 / 5000 G / 4000 G / 3000 series platform. Prime B550 series motherboards boast a robust power design, comprehensive cooling solutions and intelligent tuning options. They provide PC builders and users with a range of performance optimisations through intuitive software and firmware features.
AMD B550
Chipset
AMD AM4
Socket
mATX (Micro ATX)
Format
DDR4
Memory type
4×
Number of RAM slotsKey features of the ASUS PRIME B550M-A WIFI II motherboard
- The AMD AM4 socket is ready for Ryzen™ 5000, 5000 G, 4000 G and 3000 series desktop processors.
- Comprehensive cooling is provided by a VRM heatsink, PCH heatsink, hybrid fan headers and the Fan Xpert 2+ utility.
- Ultrafast connectivity with dual M.2, PCIe 4.0, Wi-Fi 6, 1Gb Ethernet and USB 3.2 Gen 2 Type-A support.
- Aura Sync RGB lighting uses an onboard addressable Gen 2 header and RGB headers for easy synchronisation with Aura Sync-capable hardware.
All-round energy efficiency
Comprehensive control is a fundamental attribute of the ASUS Prime series. The Prime B550 includes flexible tools to customise every aspect of your system. These let you tune performance to perfectly match the way you work and maximise productivity. Thanks to the Energy Processing Unit (EPU), you can enjoy system-wide power savings. The EPU automatically optimises power consumption and maximises savings with Away mode.
Flexible control options
Fan Xpert 2+ software provides comprehensive control over your system fans. Auto-Tuning mode intelligently configures all parameters with a single click. There is also an Extreme Quiet mode that reduces chassis fan speeds below the default minimum to keep your system whisper-quiet during light tasks. Fans can also be controlled via the UEFI BIOS.
Precise digital voltage control
The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also lets you fine-tune your CPU for ultimate stability and performance.
Advanced tuning for serious tweakers
The intuitive Advanced mode offered via the UEFI puts you in complete control. A built-in search feature makes it easy to find options, and various advanced functions let you intelligently make detailed adjustments so you can dial in performance just the way you want. EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and a one-click application of important settings—all to help you get your rig up and running in no time.
Comprehensive cooling and protection for the motherboard
The Prime B550 motherboard is equipped with multiple onboard heatsinks and a series of hybrid fan headers to keep your build cool and stable even under heavy loads. A VRM heatsink with a thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance. In addition, the Prime B550 series offers comprehensive cooling controls that are configurable via Fan Xpert 2+ software or the UEFI BIOS. Each 4-pin PWM/DC header can dynamically reference three thermal sensors, while Fan Xpert 2+ lets you map the temperature of supported ASUS graphics cards to optimise cooling for both GPU and CPU-intensive tasks.
Built on a solid foundation
The Prime B550 motherboard provides all the fundamentals to boost daily productivity—stable power, intuitive cooling and flexible data transfer options. The Wi-Fi 6 module, compatible with the 802.11ax standard, pushes theoretical peak bandwidth up to 1.2Gbps and is optimised for more efficient operation on crowded networks. To take full advantage of its potential, it is recommended to pair it with ASUS Wi-Fi 6 routers. The rear panel features fast USB 3.2 Gen 2 Type-A ports for easy connection of peripherals. The PCIe 4.0 M.2 slot supports up to the 22110 format, enabling you to use NVMe SSD RAID and achieve transfer speeds of up to 64Gbps, which delivers incredible performance, especially when combined with AMD Ryzen™ 5000 and 3000 series processors.
Combined onboard features deliver elevated audio
A combination of onboard features delivers elevated audio, where intelligent design and premium hardware create sound quality unlike anything you’ve ever experienced. Audio shielding enables precise analog/digital separation and significantly reduces multi-lateral interference, separate PCB layers for the left and right tracks provide consistent, equal quality for both channels, and premium audio capacitors deliver a warm, natural and immersive sound with exceptional clarity and fidelity.
Aura Sync
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for the RGB LED strips connected to the onboard RGB headers. And it can all be synced with an ever-growing portfolio of Aura-capable hardware.
Addressable Gen 2 RGB header
The addressable Gen 2 header is capable of detecting the number of LEDs on second-gen addressable RGB devices, allowing the software to automatically tailor lighting effects to specific devices. The new header also offers backward-compatibility with existing Aura RGB gear.
Armoury Crate
Armoury Crate is a new software utility designed to give you centralised control over supported products. From a single intuitive interface, Armoury Crate lets you easily customise RGB lighting and effects for every compatible device in your arsenal. The software also provides control over settings for ASUS products, including keyboard and mouse preferences. Armoury Crate even features dedicated product registration and news feeds to help you stay in touch with the ASUS community.
SafeSlot Core
SafeSlot Core is the ASUS-exclusive PCIe slot. Featuring a reinforced design that is anchored to the motherboard by a special hook, SafeSlot Core provides a 1.6× stronger retention and 1.3× greater shearing resistance than standard expansion slots.
Port equipment
Storage
- SATA III: 4
- M.2: 2
- M.2 Slot 1 – PCIe 4.0 x4 / SATA
- M.2 Slot 2 – PCIe 3.0 x4 / SATA
USB ports
- Internal USB 2.0: 4 (2× header)
- Internal USB 3.2 Gen 1: 2 (1× header)
- Rear USB 3.2 Gen 1: 4
- Rear USB 3.2 Gen 2: 2 (Type-A)
Graphics
- Graphics outputs: HDMI, DVI-D, VGA (D-Sub)
Sound
- Channels: 7.1 (Realtek)
- Rear connectors: 3× 3.5mm jack
- Internal connectors: S/PDIF header
Other
- Network: RJ-45 (1Gb LAN), Wi-Fi 6, Bluetooth
- Rear: PS/2, Wi-Fi antenna connectors
- Power: 24pin ATX, 8pin + 4pin EPS
- Internal: ARGB LED header, RGB LED header, COM header, TPM header
Choosing a motherboard
When choosing a motherboard (or mainboard), it is important to pay particular attention to the motherboard socket type, format and chipset. These are among the most important parameters and ensure the board's compatibility with the processor, expansion cards and other components. The specific socket will determine the choice of a suitable processor, while the remaining connectors will dictate the selection of other components for your future computer.Specifications
Socket and chipset
Format & functions
Memory
Advanced parameters
Connectors
Series
Compatibility
Colour
| Code: | ACb550mpw2 |
| Warranty: | 36 months |
| Links: | Producer's Website: |
| Manufacturer information |
ASUSTek COMPUTER INC. 1F.,No.15, Lide Rd., Beitou Dist., Taipei City 112 Tel: +886-2-2894-3447 Tel: +886-2-2890-7798 https://gr.asus.com/ProductSafety ASUS COMPUTER GmbH Harkortstrasse 21-23 40880 Ratingen Germany, Europe Email: [email protected] ASUS COMPUTER GmbH, Harkortstrasse 21-23, 40880 Ratingen, Germany, Europe, [email protected] ASUS is a symbol of the growth of Taiwan's economy. The firm's beginnings date back to April 2, 1989, when as a small manufacturer of motherboards began his work with a few employees. Today, Asus employs more than 12,500 employees worldwide. ASUS products can be found in almost every category of the information technology marketplace. ASUS is focused on desktops, laptops, phones, optical drives and components. In the manufacture of motherboards, the company is now the dominant player with a staggering 40% market share. 
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