ASUS PRIME B850M-A WIFI-CSM mATX Motherboard

Designed for AMD Ryzen™ 9000 Series

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-A WIFI-CSM delivers performance optimizations through intuitive software and firmware features, and is Advanced AI PC-ready with the power and connectivity required for demanding AI applications.

ASUS Corporate Stable Model (CSM)

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. It offers up to 36 months of product lifecycle support and a 6-month end-of-life notice, allowing organizations ample preparation time for product transitions. Each ASUS CSM motherboard includes ASUS Control Center Express, a server-grade IT management software.

ASUS Control Center Express

ASUS Control Center Express is an integrated IT monitoring and management solution designed to accelerate deployment, simplify operations, and improve productivity through comprehensive, user-friendly controls. It supports over 100 ASUS motherboards, delivering a high-quality, TCO-optimized solution for business environments.

Optimize IT Endpoint Management

Designed to help IT staff monitor and control devices across corporate networks, enabling remote inventory checks and centralized management across multiple locations.

Automate IT Maintenance

Allows IT staff to schedule automatic BIOS, software, and utility updates for selected or all devices during off-peak hours, enhancing system stability and operational flexibility.

Secure Endpoint Management

Securely manage endpoint configurations, portable storage access, and software applications by defining and applying device-level grouping rules.

ASUS AI Solutions

ASUS AI Solutions include AI Cache Boost to accelerate large language model (LLM) workflows and ASUS AI Advisor, your built-in technical expert for PC performance guidance.

AI Cache Boost

AI Cache Boost enhances local LLM workflows by optimizing CPU cache and memory pathways. Exclusive to ASUS AMD 800 and 600 series motherboards with Ryzen™ 9000 Series CPUs, this BIOS feature delivers up to 29% faster local AI performance with high-speed memory tuning.

AI Advisor

ASUS AI Advisor is an AI-powered technical assistant available to owners of compatible ASUS motherboards. It provides natural-language guidance on hardware features, one-click optimizations like fan tuning, and advanced configuration tips for experienced builders.

Digital Power Design

The PRIME B850M-A WIFI-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient, stable power delivery for AMD processors and consistent performance for everyday computing.

Six-Layer PCB Design

The multi-layer PCB design improves heat dissipation around voltage regulators, enhancing system stability and providing additional overclocking headroom.

Digi+ VRM Control

Digi+ VRM delivers real-time voltage control, automatically adjusting frequency and power efficiency settings to maintain stable performance.

Enhanced Memory & Storage Performance

Comprehensive memory tuning options allow the PRIME B850M-A WIFI-CSM to maximize DDR5 performance across entry-level and high-speed memory kits.

DDR5 Memory Optimization

For memory without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and applies optimized settings. For advanced users, extensive AMD EXPO™ support and UEFI tuning options enable performance beyond stock DDR5 speeds.

Three M.2 Slots (Up to 128 Gbps)

The motherboard includes three M.2 slots: one supporting PCIe® 5.0 speeds up to 128 Gbps, and two supporting PCIe® 4.0. This enables faster boot times and quicker application loading.

Cooling – Cooler by Design

Engineered with multiple onboard heatsinks and hybrid fan headers, the PRIME B850M-A WIFI-CSM maintains stable temperatures even under heavy workloads.

Smart Cooling Precision

ASUS Fan Xpert 2+ provides comprehensive fan control, including Auto-Tuning for one-click optimization and Extreme Quiet mode for silent operation during light tasks. Fan settings can also be adjusted via the UEFI BIOS.

Cooler Compatibility

ASUS AIO coolers deliver strong thermal performance, high overclocking potential, and customizable aesthetics, making them an ideal match for PRIME motherboards.

Flexible Connectivity

The motherboard offers extensive connectivity options, including WiFi 6E, a PCIe® 5.0 slot, and a wide range of USB ports with Type-C® support.

WiFi 6E

Built-in WiFi 6E utilizes the 6 GHz band to deliver ultrafast wireless speeds, increased bandwidth, and improved performance in dense wireless environments.

Realtek 2.5 Gb Ethernet

Realtek 2.5 Gb Ethernet reduces CPU overhead while delivering high TCP and UDP throughput for faster, smoother wired networking.

Front USB 5Gbps Type-C®

A front-panel USB 5Gbps Type-C® connector enables fast data transfers of up to 5Gbps.

Personalization & Customization

The PRIME B850M-A WIFI-CSM enhances user experience with simplified BIOS controls and extensive RGB customization options.

UEFI BIOS

The UEFI BIOS offers an intuitive interface for beginners and advanced configuration tools for experienced users.

ASUS GlideX

GlideX enables seamless screen sharing and control across PCs, tablets, and smartphones using wired or wireless connections across multiple platforms.

ASUS DriverHub

DriverHub simplifies driver management with automatic detection and one-click installation and updates.

Armoury Crate

Armoury Crate allows users to customize Aura Sync RGB lighting, manage ASUS devices, and access product updates and registration.

Aura Sync

Provides complete RGB lighting control and synchronization with compatible hardware.

Addressable Gen 2 RGB Headers

Three addressable Gen 2 headers automatically detect LED counts on compatible devices and adjust lighting effects accordingly.

DIY-Friendly Design

EZ PC DIY features simplify and accelerate the building process for a smooth DIY experience.

Q-Antenna

Q-Antenna enables fast, snap-in WiFi antenna installation for improved convenience and consistent wireless performance.

Q-LED Core

Q-LED Core provides color-coded diagnostics during POST to help identify and troubleshoot hardware issues.

Pre-Mounted I/O Shield

The pre-installed I/O shield protects ports, simplifies installation, and enhances overall aesthetics.

BIOS FlashBack™

BIOS FlashBack™ allows easy BIOS updates using a USB drive—no CPU or memory installation required.

SafeSlot

The reinforced SafeSlot PCIe® 5.0 design ensures secure GPU installation and supports faster data speeds.

Built for Advanced Gaming & Creating

When performance matters most, ASUS motherboards deliver with DDR5 support, AMD EXPO™, and PCIe® 5.0 for graphics and NVMe storage. Paired with AMD Ryzen™ 9000, 8000, and 7000 Series processors, the PRIME B850M-A WIFI-CSM empowers you to game harder and create faster.