The MSI Pro B850M-A WiFi DDR5 motherboard is engineered to support AMD Ryzen 9000/8000/7000 Series processors, leveraging the AMD AM5 socket for enhanced performance. It features 4x dual-channel DDR5 memory slots, supporting speeds up to 8200+ MT/s, along with PCIe 5.0 compatibility for smooth expansion. With 2x M.2 slots, 4x SATA 6 Gb/s ports, and 8x rear USB ports, it offers fast connectivity and versatile storage options. Equipped with 5 Gbps LAN, WiFi 7, and the Realtek ALC897 audio codec, this m-ATX motherboard delivers robust, high-speed performance ideal for gaming and multitasking setups.
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.
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Features
PRO B850M-A WiFi
PRO B850M-A WIFI offers a simple design with a harmonious silver colour scheme that perfectly matches both white and black PC builds. It is engineered with many exclusive features of MSI, a Wi-Fi 7 with EZ Antenna, 5G LAN, PCIe 5.0 M.2 with EZ M.2 Shield Frozr II, and Supplemental PCIe Power, ready for the AMD Ryzen™ 9000 series processors.
- Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
- Supports DDR5 Memory, Dual Channel DDR5 8200+ MT/s (OC)
- Ultra Performance: Direct 8+2+1 Power System 60A SPS, 8+4-pin CPU power connectors, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper and server-grade level material
- Frozr Guard: Extended Heatsink, MOSFET thermal pads rated for 7W/mK, additional choke thermal pads and EZ M.2 Shield Frozr II are built for high performance system and non-stop experience
- EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Clip II and EZ Antenna
- Lightning Fast Game experience: PCIe 5.0 slot and Lightning Gen 5 x4 M.2
- 5G LAN with Wi-Fi 7 Solution: the latest solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission
- Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience
PRO Series Business Elegance
The PRO Series is tailored to professionals from all walks of life. The lineup features impressive performance and high quality, while aiming to provide users incredible experience. Users who care about productivity and efficiency can definitely count on the MSI PRO Series to assist you with multitasking and increasing efficiency.
Exclusive Features
- Digital PWM
- PCIe Steel Armour
- 6-layer Server-grade PCB with 2oz Thickened Copper
- EZ PCIe Clip II
Connectivity
High-Speed Transmission
- 5G Network Solution
- Latest Wi-Fi 7
- DDR5 Support
- Lightning Gen 5
Thermal Solution
Premium Thermal Solutions
- 7W/mK MOSFET Thermal Pads
- Extended Heatsink
- EZ M.2 Shield Frozr II
- Pump Fan Support
Ready for AI PC
MSI motherboards are designed with advanced hardware and technology, well-supporting the demanding computing usage of gaming and AI. Moreover, they also introduce AI to MSI Center and BIOS, making everything more effortless than before.
Al Engine
Provides several categories for you to sync the applications you want to perform and automatically optimising them to create a comfortable environment.
AI LAN Manager
Optimises networking performance and minimises latency, providing a seamless online experience.
Frozr Al Cooling
Automatically adjusts fan duty to make sure the system stays in cool, stable and high performance.
Al Boost
Al Boost is an MSI exclusive feature. It overclocks NPU to improve higher Al performance.
EZ DIY
One Finger
EZ M.2 Installation
EZ M.2 Shield Frozr Il
The EZ M.2 Shield Frozr Il is a tool-free cooling solution designed to protect your M.2 SSDs while ensuring optimal thermal performance. This upgraded version, compared to the previous design, features two notches on the back of the heatsink for better alignment with the motherboard slot. With just one finger, you can easily install or remove the M.2 heatsink, making the installation of your M.2 SSD more convenient.
EZ M.2 CLIP II
MS's exclusive EZ M.2 CLIP Il makes M.2 installation seamless. Insert the SSD card into the slot and press it down to lock it in place with the clip. As fasten the SSD, flick the clip outwards and then the SSD is removed. The process is smooth, and you don't need to use your tools like before. One finger can give you perfect DIY experience.
EZ M.2 CLIP II Remover
Introducing MSI's EZ M.2 CLIP II Remover, a handy tool designed to simply switching or repositioning the EZ M.2 CLIP II on your motherboard. This tool allows users to effortlessly detach the EZ M.2 CLIP II from the motherboard and reattach it to any desired M.2 slot. It is included in the accessory kit that comes with MSI motherboards.
EZ GPU Installation
One Finger for EZ GPU Installation
The new EZ PCIe Clip II, located on the first slot, features the rebounding force mechanism that allows for easy removal of the graphics card by pressing the tail-like lock with one finger. Due to this exquisite design, users can uninstall the graphics cards effortlessly, even in the cramped case spaces.
EZ Button
Flash BIOS Button
Flash the BIOS with only a connected power supply by following a few steps. CPU and memory not required.
Clear CMOS Button
Restore the BIOS to the default settings – helpful in 99% of the cases to successfully boot again.
One Hand
Pre-Installed I/O Shield
The Pre-Installed I/O Shield offers a streamlined and hassle-free installation experience by eliminating the need to manually fit the I/O shield during motherboard setup. With its built-in design, it ensures proper alignment and a secure fit, providing both protection and convenience while enhancing the overall durability of your build.
EZ Mounting
MSI motherboards circuitry ensure the case standoff keep out zones are pure and clean. Moreover, the protective paint is printed around each screw hole to prevent parts from being scratched or damaged to the motherboard.
- Avoid Collision Notification
- Keep Out Zone
- Double ESD Protection
One Step
EZ Antenna
MSI EZ Antenna makes the process effortless by simply attaching fasteners to the motherboard without rotation.
Driver Utility Installer
Once connected to the internet, MSI Driver Utility Installer will detect and present suitable drivers and utilities automatically, you can download and install with just a few clicks.
*Please ensure to connect the internet, or the Driver Utility Installer won't launch automatically.
*MSI Driver Utility Installer will be ready in Windows 11 build 22H2.
One Glance
EZ Debug
EZ Debug LED
Onboard LEDs will indicate the source of the problem so you know exactly where to look to get up and running again.
EZ Memory Detection LED
This LED lights up when it detects faulty memory in slots, eliminating guesswork from troubleshooting.
EZ Identify
Header with Different Colour
To better differentiate between pin headers for different purposes, mark the pump sys header and ARGB headers in white and PCIe 8-pin header in grey, enabling users to manage cables more efficiently.
Identify M.2 Signal Source
The motherboard has a detailed M.2 signal source list printed on it, allowing you to easily identify them.
Identify USB Speed
Change the way USB speeds are described to numbers (rather than the confusing names like USB 3.2 Gen 2x2) for better understanding
One Click
EZ Overclocking
While overclocking can be overly complex for some, MSI Click BIOS X made it more accessible with multiple one-click overclock features for both processor and memory, allowing users to easily enhance system performance without delving into intricate settings.
Creation Boost
One-click CPU overclock automatically optimises your CPU performance, instantly tuning it to the best possible level.
AI Boost
An intelligent algorithm boosts NPU performance to get the best possible AI performance when you need additional horsepower.
*Enabled with compatible processors.
EXPO / A-XMP
Choose from preset EXPO and A-XMP profiles to automatically overclock compatible DDR memory for optimal performance.
EZ Optimisation
A host of features inject artificial intelligence into key aspects of your computing experience to make smarter, real-time optimisations. The MSI Center offers a clean, minimal interface to customise and manage your PC settings. The AI Engine, for example, automatically adjusts settings based on the applications you're using, ensuring seamless performance.
Ultra Performance
Power Solution
Power Design
Direct 8+2+1 Power Design
Unleash and sustain the maximum performance with a VRM design built with a total of 8+2+1 digital power phases. With 8+4-pin power connectors, PRO B850M-A WIFI is ready for the challenge of heavy-loading tasks.
- 8 Phases VCORE Direct SPS 60A
- 2 Phases SOC Power
- 1 Phase MISC Power
- 4+8 pin CPU Power
- Core Boost
- Digital Power
PCB Design
Optimised PCB Solution
The PCB design has been optimised for higher bandwidth and faster transfer speeds, which is also beneficial for reliable circuit transmission.
- 6 PCB layers
- Server-grade PCB material
- 2oz Thickened Copper
EZ OC Tuning
Performance Preset
MSI exclusive Performance Preset is a more intuitive way to boost performance by setting the power limitation as your preference. There are two level setting - PBO Auto & PBO Enable.
Performance Switch
Performance Switch combines the benefits of AMD default PBO(Precision Boost Overdrive) and MSI's own OC settings, provides higher CPU performance in both status of single-core and multi-core. This is for users who dare for the maximum performance.
PBO Thermal Point
MSI PBO Thermal profiles are setting maximum CPU temperature at 85°C, 75°C and 65°C levels. With the thermal profiles, the CPU operates at lower voltage and temperature but remaining the same performance.
Config TDP
Config TDP is designed to provide ECO Mode (65W) or different TDP (PPT/TDC/EDC) settings for advanced users. By offering several profiles for different TDP settings in Click BIOS 5, Config TDP makes setting TDP profiles easier and don't need to modify settings manually for each TDP.
More for Performance
1-Second Overclocking!
MSI Game Boost enables one-second overclocking, giving you the performance boost you need to get more FPS.
Load-Line Calibration
What you set, is what you get. LLC makes sure your CPU voltage remains 100% stable under any load. This greatly improves stability when demanding more CPU performance.
Overvoltage Protection
Prevents potential short-circuit damage to the CPU and other critical components.
Memory
DDR5 Memory Support with High Performance
A huge step of DDR performance enhancement with the latest DDR5 memory. Combines with dedicated SMT welding process and MSI Memory Boost technology, PRO B850M-A WIFI is ready to deliver the world-class memory performance.
- EXPO / A-XMP Support
- Memory Boost
- SMT Process
High-Efficiency Mode
The High-Efficiency Mode is designed to optimise memory performance by increasing memory bandwidth and reducing latency. With the four sets of RAM timing settings, it allows users to find out the optimal configuration based on the quality of their memory modules.
Latency Killer
MSI BIOS has introduced the latest Latency Killer feature on all AM5 socket motherboards. Users can enable Latency Killer in the BIOS to reduce memory latency by up to 12% when running at high frequencies. Importantly, it is compatible with a wide range of memory overclocking features, including Memory Try It!!, EXPO, A-XMP, and High-Efficiency Mode, etc.
- Up to 12% Memory latency Reduction
*Supports BIOS versions after AGESA 1.2.0.2b.
Protection
Transient Voltage Suppressors (TVS)
Transient Voltage Suppressors (TVS) are safety devices used to protect against excessive voltage. All motherboard models of MSI are equipped with TVS. When the voltage abnormally rises, the TVS switches from a high-resistance state to a low-resistance state, diverting the excessive voltage to ground. This helps prevent circuit damage caused by high voltage.
Solid Pin Design
The 4-pin, 8-pin, and 24-pin power connectors of MSI motherboards are all designed with solid pins. The solid pin design allows for a more stable transmission of 12V power to the CPU, even when handling high current loads.
Advantages of Solid Pin Power Connector
- Improved stability : Larger contact area enhances stability during power delivery.
- Low impedance : Solid pins offer low impedance, enabling efficient power flow.
- Strong durability : The solid pin design ensures strong durability, capable of withstanding demanding conditions.
- Suitable for high-current applications.
Anti-Corrosive Stainless Steel IO Shield
An extra layer of sponge materials along with corrosive resistance IO Shield to help improve static electricity and reduce electromagnetic radiation noise from the system as well as much more durable compare to traditional IO Shields.
Over Current Protection
MSI motherboards prioritise safety with the embedded Overcurrent Protection (OCP), ensuring crucial components such as the USB ports, DDR memory, PWM IC, and CPU are shielded from excessive current. This proactive defence mechanism curtails the risk of damage or malfunction due to power surges, promoting long-term system stability. This commitment to safeguarding your hardware underscores MSI's dedication to producing motherboards that prioritise durability and stability.
- CPU / PWM IC
- DDR memory Slots
- Rear & Front USB ports
The Grounding Structure of Power Phases
The grounding structure of power phases is the MSI's exclusive design. This patented design enables to suppress the electromagnetic interference (EMI) generated by the power phases and helps to efficiently conduct heat to the copper plane with grounding properties.
Frozr Design
Frozr Guard
Cooling Overview
Extended Heatsink
Extended Heatsink enlarges the surface of heat dissipation and maintain the performance at heavy loads.
M.2 Shield Frozr
Strengthened M.2 thermal solution helps keep M.2 SSD safe and ensures incredible performance.
7W/mK Thermal Pad & Additional Choke Pad
High-quality 7W/mK MOSFET thermal pads and additional choke thermal pads ensure stable performance when all cores are running at high speed.
Enlarged Chipset Heatsink
The enlarged heatsink is designed to reduce dust and noise and capable of maintaining high efficiency of heat dissipation.
Frozr Sync
System Cooling
DIY 2.0 – Integrating with the System Environment
Connect and synchronise with MSI coolers and cases with strategically positioned pin-header locations including a dedicated pump-fan header.
- For CPU Cooler
- For Liquid Cooler - 3A power deliver / Supports auto-detect
- For System Fan - Supports auto-detect
Combo Fan Header
The MSI Combo Fan Header is a versatile component, functioning as both a pump and or fan header. The header will automatically detects whether it is either pump or PWM/DC fan, with it's distinctive grey colour ensuring easy identification.
Frozr Control
Cooling Wizard
Cooling Wizard serves as a comprehensive solution for managing fan settings across all MSI products. It ensures superior cooling performance and noise reduction for your gaming PC, offering compatibility with PWM/DC fans and pumps, customisable options, and intuitive temperature monitoring for optimal operation with one click.
Multiple Profiles
Save up to 5 profiles for multiple occasions.
Smart Fan & Manual Fan
Smart Fan
Allow users to change the temperature curve with the 4 dots provided.
Manual Fan
Allow users to manual change the temperature at a set percentage.
User Scenario
Follow MSI Center Mode
Adjust fan settings according to the mode selected in User Scenario.
BIOS Mode
Adjust Fan settings in BIOS.
Customise by User
Customise fan settings by the users.
Frozr AI Cooling
Frozr AI Cooling targets CPU and GPU temperatures. The AI system detects CPU and GPU temperatures and automatically adjusts the fan duty of system fans to ensure optimal performance.
Auto Detect Fan
MSI fan headers automatically detect fans running in DC or PWM mode for optimal tuning of fan speeds and silence. Hysteresis also makes your fans spin up fluently to make sure your system stays silent, no matter what.
Trilink
Networking
Flawless Connection
High-Bandwidth and Low-Latency Network
MSI's premium network solution provides incredible data transfer speed for demanding users.
- 5G LAN
- Wi-Fi 7
- EZ Antenna with Magnetic Stand
The Next Gen Wi-Fi Solution – Wi-Fi 7
Wi-Fi 7 is the latest wireless solution that takes a huge leap forward with multiple improvements to meet the traffic demand brought and the growing number of wireless devices.
*Windows 11 compatibility only
Upgrade to Wi-Fi 7
Wi-Fi 7 (802.11be) introduced higher speeds, wider channels, improved efficiency, and reduced latency over Wi-Fi 6 (802.11ax). It also improved battery life and provided better performance in crowded environments.
Higher Order Modulation
The higher QAM(Quadrature Amplitude Modulation) value, the more data each packet can carry. Wi-Fi 7 improves the modulation scheme from 1024-QAM to 4096-QAM – boosting peak transmission rates and network capacity.
Multi-Link Operation
Wi-Fi 7 enables devices to simultaneously send and receive data across several frequency bands and channels to meet the traffic demand brought and the growing number of wireless devices.
AI LAN Manager
MSI AI LAN Manager automatically classifies and prioritises the latency-sensitive applications for online games, giving you the best online gaming experience with low latency.
MSI AI LAN Manager
- Automatically prioritises games above other applications
- Allows to change applications' traffic priority
- Allows to customise bandwidth for each application
- Analyses Wi-Fi signals to select the best source.
Storage
Fast and Future-Ready Storage
MSI Gaming series motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Start games faster, load levels faster and have a real advantage over your enemies.
- 1 x Lightning Gen 5 M.2 - 128 Gbps
- 1 x Lightning Gen 4 M.2 - 64 Gbps
Expansion
Lightning Gen 5 PCIe with Steel Armour
Lightning Gen 5 PCIe
Doubling over the previous generation, the bandwidth of a x16 interface can reach 128GB/s.
SMT PCIe 5.0 SLOT
The advanced SMT(Surface Mount Technology) PCIe slot diminish interference and electrical noise, fully support the PCIe 5.0 signal.
Reinforced, Heavy Soldered Connections
MSI PCI Express Steel Armour slots are secured to the motherboard with extra solder points and support the weight of heavy graphics cards. When every advantage in games counts, Steel Armour shields the point of contact from electromagnetic interference.
PCIe Supplemental Power
The exclusive Supplemental PCIe Power connector provides dedicated power for the high-power demands of GPUs used in AI computing and gaming, ensuring stable, efficient, and sustained performance.
- 2.5x - Power Excursion
- ATX 3.1 Ready
- PCIe 5.1 Ready
Front USB Type-C
MSI PRO motherboards support USB Front Type-C that allows gamers to connect with the latest USB devices. Built up a system with MSI PC case to have the most convenient experience.
Experience
Audio
Audio Boost
- High Definition Audio Processor
- High Quality Audio Capacitors
- High Quality Audio Jacks
- Isolated Audio Signal
- De-Pop Protection
The Isolated Analogy Structure for Audio Connectors
To provide clear voice, MSI develops a unique structure – Isolated Analogy Structure. The external metal framework of the audio connectors is separated from the internal layout, which ensures the sound quality crisp.
Mystic Light
Glow Your PC
Splash on some colour and vibrant RGB lighting effects using Mystic Light utility of MSI Center, which has million colours and fancy LED effects. Enjoy the full control and creativity of your PC's lighting with one software.
- Wave
- Steady
- Flame
- Breathing
- CPU Temperature
- Colour Ring
- Lightning
- Recreation
- Meteor
- Default
Synchronised
Extend Your RGB Experience with Ease
Add more colour if you want! Mystic Light Extension pin header provides an intuitive way to control additional RGB strips and other RGB peripherals added to a system, without needing a separate RGB controller.
A-Rainbow V2
Supports 5V Addressable RGB devices. Compatible with ARGB Gen2 / Gen1 devices.
*Gen2 device only supports 7 RGB themes.
RGB
Supports 12V RGB Devices.
Ambient Link
Synchronise lighting theme with compatible lighting devices.
BIOS
CLICK BIOS X
MSI’s newly designed CLICK BIOS X offers an aesthetically pleasing and user-friendly experience. The new design ensures that users of all experience levels can quickly access and adjust system configurations with ease.
BIOS Key Features
Creation Boost
Easily boost your CPU performance with the press of a single button for instant overclocking.
AI Boost
Easily enhance your NPU performance with a click, unlocking the full potential of Al processing.
EXPO / A-XMP
Easily apply optimised memory overclocking profiles through a simple one-click activation.
Hardware Monitor
Instantly access real-time critical hardware information, including temperature, memory capacity, clock speed, and voltage.
M-Flash
Easily flash or update the BIOS in just a few minutes directly from the CMOS Setup Utility.
U-Key
Enables secure system access by requiring a specific USB drive for booting, adding an extra layer of security to your PC.
Profile
Save and switch between multiple custom system configurations, allowing for quick adjustments tailored to different tasks or performance needs.
Favourites
Bookmark frequently accessed settings, providing quick and easy access to essential configurations without the need to navigate through the entire menu.
Search
Quickly locate specific settings or options by typing keywords, streamlining navigation and making system adjustments more efficient.
Software
MSI Center
MSI brand new MSI Center unifies a suite of MSI software utilities into a single centralised application. Take control of advanced motherboards features and unleash endless possibilities.
AI Engine
MSI AI Engine eliminates the need to tweak settings manually and saving you time and effort.
Mystic Light
Create your own colourful masterpiece with ease. Splash any colour you want with just a few clicks!
True Colour
Optimised monitor's brightness and colour in several modes for different situation, you can also customise by yourself.
User Scenario
One click for setting your computer, even customise own profile as your preference.
Hardware Monitoring
Get immediate access to your critical hardware information in real-time.
AI LAN Manager
MSI AI LAN Manager prioritises latency-sensitive apps, ensuring the best low-latency online gaming experience.
Cooling Wizard
Cooling Wizard is a comprehensive tool for managing fan settings across MSI products, offering one-click optimisation
System Diagnosis
Restore and backup your MSI storage devices in one click to provide stable system usage, you can even monitor the storage status to prevent system crash or data missing.
AIDA64
Exclusive UI of AIDA64 Extreme
MSI motherboards provide 60 days free trial of AIDA64 Extreme - MSI edition. AIDA64 Extreme is an almighty application for system information, diagnostics and benchmarks. With the application, you can monitor the detailed hardware and software information on PC and save it to file in multiple formats such as CSV and HTML.
Norton 360
Opt-In to Cyber Safety with Norton 360 Deluxe
Multiple layers of protection for your devices, online privacy features including the MSI Secure VPN, plus Dark Web Monitoring - all in a single solution. With MSI motherboards, you can enjoy a 60-day free trial of Norton 360 Deluxe.
- Up to 50 GB PC cloud backup
- Real time Threat protection and Smart Firewall
- Password manager
- PC SafeCam
Backed by a 3 year MSI warranty.
