Home > Shop > Asus PRIME B850M-A WIFI, AMD B850, AM5, Micro ATX, 4 DDR5, HDMI, 2 DP, Wi-Fi 6E, 2.5G LAN, 3x M.2
Asus PRIME B850M-A WIFI, AMD B850, AM5, Micro ATX, 4 DDR5, HDMI, 2 DP, Wi-Fi 6E, 2.5G LAN, 3x M.2
Asus PRIME B850M-A WIFI, AMD B850, AM5, Micro ATX, 4 DDR5, HDMI, 2 DP, Wi-Fi 6E, 2.5G LAN, 3x M.2
£170.31 inc. VAT
Product details
Description
Specification
- Motherboard Type: Desktop
- Form Factor: Micro ATX
- Socket: AMD AM5
- Chipset: AMD B850
- #Hide#DDR Type: DDR5
- CPU Support: Click here for CPU support
- RAM Technology: “DDR5 (Dual Channel)
ECC and Non-ECC Un-buffered DIMM*
Supports AMD EXPO
ASUS AEMP*Non-ECC, un-buffered DDR5 memory supports On-Die ECC function”
- RAM Slots: 4 x DIMM
- RAM Speeds: Up to 8000+MT/s (OC)
- Maximum Memory: 256GB
- Graphics: Integrated Graphics
Graphics specifications may vary between CPU types - Graphics Ports: 1 x HDMI
2 x DisplayPort - PCI/PCI Express: Ryzen 9000 & 7000 Series CPUs:
1 x PCIe 5.0 x16 (supports x16 mode)Ryzen 8000 Series CPUs:
1 x PCIe 4.0 x16 (supports x8/x4 mode)AMD B850 Chipset:
1 x PCIe 4.0 x16 (support x4 mode) - Storage: 4 x SATA III
3 x M.2Ryzen 9000 & 7000 Series CPUs:
M.2_1 (2280) – PCIe 5.0 x4
M.2_2 (2280) – PCIe 4.0 x4Ryzen 8000 Series CPUs:
M.2_1 (2280) – PCIe 4.0 x4
M.2_2 (2280) – PCIe 4.0 x4/x2AMD B850 Chipset:
M.2_3 (2242/2260/2280) – PCIe 4.0 x4 - RAID: Ryzen 9000 Series CPUs: RAID 0/1/5/10
Ryzen 8000 Series CPUs: RAID 0/1
Ryzen 7000 Series CPUs: RAID 0/1/10 - Wireless: Wi-Fi 6E
2×2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band
Bluetooth v5.3 - LAN: 2.5GB LAN
- Audio: Realtek 7.1 Surround Sound High Definition Audio CODEC
- USB Ports Supported: Rear:
2 x USB 10Gbps Type-A
2 x USB 5Gbps Type-A
4 x USB 2.0Front:
1 x USB 5Gbps Type-C
2 x USB 5Gbps
4 x USB 2.0 - Back Panel I/O Ports: 2 x USB 10Gbps Type-A
2 x USB 5Gbps Type-A
4 x USB 2.0
2 x DisplayPort
1 x HDMI
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet
3 x Audio jacks
1 x BIOS FlashBack button - Internal I/O Connectors: 1 x 4-pin CPU Fan
1 x 4-pin CPU OPT Fan
1 x 4-pin AIO Pump
3 x 4-pin Chassis Fan
1 x 24-pin Main
1 x 8-pin +12V CPU
1 x 4-pin +12V CPU
3 x M.2 (Key M)
4 x SATA 6Gb/s
1 x USB 5Gbps Type-C
1 x USB 5Gbps - .: 2 x USB 2.0
3 x Addressable RGB Gen2
1 x Clear CMOS
1 x Chassis Intrusion
1 x COM Port
1 x Front Panel Audio
1 x S/PDIF Out
1 x SPI TPM (14-1 pin)
1 x 10-1 pin System Panel - Accessories: 2 x SATA 6Gb/s cables
1 x ASUS WiFi Q-Antenna
1 x M.2 rubber package
2 x Screw packages for M.2 SSD
1 x Quick start guide - Additional Features: See Overview
- Package Type: Retail
- Warranty: 3 Years
- #Hide#M.2 Slot(s): Yes (M.2)
- #Hide#No. LAN Ports: 1 x LAN
- #Hide#Max LAN Speed: 2.5GB LAN
- #Hide#Wi-Fi: Yes (Wi-Fi)
Only 5 left in stock. Order today!

Description
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors.
The PRIME B850M-A WIFI motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
- AMD B850 (AM5 Socket) micro-ATX motherboard
- Advanced AI PC-ready
- DDR5
- PCIe 5.0 Ready
- Three M.2 slots
- Wi-Fi 6E
- Realtek 2.5Gb Ethernet
- Dual DisplayPort
- HDMI
- Front USB 5Gbps Type-C® support
- BIOS FlashBack
- Aura Sync
Performance
- AI Advisor – ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.
- Digital Power Design – PRIME B850M-A WIFI features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.
-
Six-layer PCB design – The multi-layered printed circuit board design quickly dissipates heat around the voltage regulators to improve overall system stability and provide the CPU with more overclocking headroom.
-
Digi+ VRM control – The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.
Enhanced Memory & Storage Performance
-
Enhanced DDR5 performance – Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850M-A WIFI maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits. For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance. For those looking to surpass stock DDR5 speeds, the PRIME B850M-A WIFI offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.
-
Three M.2 slots (up to 128 Gbps) – PRIME B850M-A WIFI offers a total of three M.2 slots, including one that supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, and two that support PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.
Cooler by design
The PRIME B850M-A WIFI motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.
- ASUS Fan Xpert 2+ – ASUS Fan Xpert 2+ software provides comprehensive control over fans. An 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.
Empowering connections
This motherboard offers a versatile range of connectivity, including support for PCIe 5.0 slot and an arsenal of USB ports which includes Type-C® connections.
- WiFi 6E – Built-in WiFi 6E5 technology takes advantage of the newly available radio spectrum in the 6 GHz band. With triple the bandwidth of the 2.4/5/6 GHz band, WiFi 6E delivers ultrafast wireless networking speeds with improved capacity and better performance in dense wireless environments.
- Realtek 2.5Gb Ethernet – Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.
-
Front USB 5Gbps Type-C® – This motherboard features a USB 5Gbps Type-C® front panel connector for speedy data transfers of up to 5Gbps.
Personalization
The PRIME B850M-A WIFI enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.
- UEFI BIOS – The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.
- ASUS DriverHub – Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.
- Armoury Crate – Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.
- Aura Sync – Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.
- Addressable Gen2 RGB headers – Three addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.
DIY friendly
The PRIME B850M-A WIFI motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.
- BIOS FlashBack – BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack™ port, and press a button—no CPU or memory needed.
- SafeSlot – PCIe 5.0 is twice as fast as PCIe 4.0. ASUS has adapted our SMT manufacturing for the faster SafeSlot, a reinforced metal sheath that ensures secure card installation and faster data speeds.
- Q-LED Core – The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.
Additional information
Weight | 1.5200 kg |
---|
Related products
-
Asrock B650M PG RIPTIDE, AMD B650, AM5, Micro ATX, 4 DDR5, HDMI, DP, 2.5G LAN, PCIe4, RGB, 2x M.2
£150.13 inc. VATAttribute name Value Stock status Currently in stock Order before 4PM for next working day delivery -
Asrock B860 LIGHTNING WIFI, Intel B860, 1851, ATX, 4 DDR5, HDMI, DP, TB4, Wi-Fi 6E, 2.5G LAN, RGB, 4x M.2
£200.98 inc. VATAttribute name Value Stock status Currently in stock Order before 4PM for next working day delivery -
Asrock A520M-ITX/AC, AMD A520, AM4, Mini ITX, 2 DDR4, HDMI, DP, AC Wi-Fi, M.2
£95.04 inc. VATAttribute name Value Stock status Currently in stock Order before 4PM for next working day delivery