ASUS Prime B550M-A WiFi II Motherboard

The ASUS Prime B550M-A WiFi motherboard supports 3rd gen AMD AM4 processors, features up to 4 x DDR4 memory slots, PCI-E 4.0, PCI-E 3.0, 2 x M.2 slots, 4 x SATA 6GB/s ports, 4 x USB 2.0 (front), 2 x USB 3.2 Gen 2 (2 rear), 6 x USB 3.2 Gen 1 (2 front, 4 rear), 1 x HDMI 2.1, 1 x D-Sub, 1 x DVI-D, Realtek RTL8111H LAN, Intel Wi-Fi 6 AX200, Bluetooth 5.1, Realtek ALC887 HD audio codec, aura sync, and a m-ATX form factor.

ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power design, 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.

Note: AMD B550 chipset is not compatible with AMD Ryzen 5 3400G, AMD Ryzen 3 3200G and all 1000/2000 Series processors.

Warning: This product contains a button battery
- If swallowed, a lithium battery can cause severe or fatal injuries with 2 hours.
- Keep batteries out of reach of children.
- If you think batteries may have been swallowed or placed inside any of the body, seek immediate medical attention.

Features

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Prime B550M-A Wi-Fi II

AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, HDMI, DVI-D, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB lighting support

• AMD AM4 Socket: Ready for Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
• Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers, and Fan Xpert 2+ utility
• Ultrafast Connectivity: Dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A support
• Aura Sync RGB Lighting: Onboard addressable Gen 2 header and RGB headers for RGB LED strips, easily synced with Aura Sync-capable hardware

Prime

ASUS Prime series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen platform. Boasting a robust power design, 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.

• PS/2
• 2 x USB 3.2 Gen 1
• DVI-D
• D-Sub
• HDMI
• 2 x USB 3.2 Gen 2
• Wi-Fi 6
• Realtek LAN
• 2 x USB 3.2 Gen 1
• 3 x Audio jacks
• PCIe 4.0 x16
  ASUS SafeSlot Core
• Audio Features
  LED-illuminated design
  Audio Shielding
  Premium audio capacitors
  Dedicated audio PCB layers
• 2 x AURA RGB headers
• DIGI+ VRM & EPU
• DDR4 Support
• AMD AM4 Socket
• 2 x Front USB 3.2 Gen 1
• 64Gb/s M.2 Support PCIe 4.0 x4 & SATA modes
• AMD B550 Chipset
• 32Gb/s M.2 Support PCIe 3.0 x4 & SATA modes
• 4 x SATA 6Gb/s
• 4 x Front USB 2.0
• Addressable Gen 2 header

Tune It 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 – maximizing your productivity.

Intelligent Control

EPU

All-Around Energy Efficiency

With the Energy Processing Unit (EPU), you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.

Fan Xpert 2+

Flexible Cooling Controls

Fan Xpert 2+ software provides comprehensive control over system fans. Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.

Digi+ VRM Control

Precise Digital Power Control

The Digi+ voltage-regulator module (VRM delivers real-time control over voltage drop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.

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.

Advance Mode

Advanced Tuning for Serious Tweakers

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.

Search Function

Quickly and easily find the option or setting you need.

ASUS User Profile

Port configuration settings between different BIOS versions or share them with friends.

EZ Mode

Quick and Simple Setup

EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings — all to help you get your rig up and running in no time.

Intuitive Graphical Fan Control

Fine-tune individual fan settings simply by dragging a curve with the mouse.

EZ XMP

Improve DRAM performance with one click.

Aura On/Off Mode (Stealth)

Easily enable or disable Aura RGB lighting or every onboard LED, for a subdued aesthetic touch.

Cool to the Core

Prime B550 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.

Heatsinks

VRM Heatsink and Thermal Pads

A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance.

Cooler by Design

Prime B550 series features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.

Multiple Temperature Sources

Each header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for G