Asus PRIME B840M-A WIFI-CSM (AM5, AMD B840, DDR5, USB3.2 Type-C, SATA3)

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Rp3.647.000

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Description

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A WIFI-CSM 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.
Advanced AI PC ready logo
AMD Ryzen logo
AMD B840 platform logo
Logo depicting power stages

8+2+1

phase digital power design
DDR5 logo

AEMP

for enhanced DDR5 performance
2.5Gb Ethernet icon

2.5Gb Ethernet

for faster data transfers
WiFi 6E icon

WiFi 6E

for stable WiFi connection and lower latency
USB 5Gbps Type-C icon

USB 5Gbps Type-C®

for rapid data transmission
PCIe 4.0 slots icon

PCIe 4.0 slots

for graphics card and storage
EZ PC DIY icon

EZ PC DIY

for easier build customization
USB 10Gbps Type-C icon

Pre-mounted
I/O shield

for safeguarding ports and enhancing aesthetics
Aura Sync icon

Aura Sync

for full RGB lighting control

ASUS Corporate Stable Model

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express – server-grade IT management software.

Learn more about ASUS CSM program

* Lifecycle support, program offering and supply status may vary by region. Please consult your local sales representative for more information.
ASUS Corporate Stable logo with text stating 'Up to 36-month Stable Supply' in a circular design on a blue background.

ASUS Control Center Express

ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.

Learn more about ASUS Control Center Express

Optimize IT endpoint management

Designed to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locations remotely.

White network icon with connected nodes on a blue background, below the text 'Optimize IT endpoint management,' describing the benefits for IT staff monitoring and controlling devices remotely.

Automate IT maintenance

Allows IT staff to schedule automatic updates of the latest BIOS, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility.

White shield icon with a checkmark inside on a blue circular background

Securely manage all of endpoints

Securely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices.

White calendar icon with a green highlighted date on a blue circular background

Performance

AI Solutions

ASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance.

AI Advisor

ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.8

UI showing that AI Advisor can be interacted using natural language.

Performance

Digital Power Design

PRIME B840M-A WIFI-CSM 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.6
8
Vcore power
2
SOC power
1​
Misc power
Angled top-down view of PRIME B840M-A WIFI-CSM motherboard.

Enhanced Memory & Storage Performance

Enhanced DDR5 performance

Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B840M-A WIFI-CSM maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.2
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 B840M-A WIFI-CSM offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.3
Graphic depicting RAM speeds.

Three M.2 slots (up to 64 Gbps)

PRIME B840M-A WIFI-CSM offers a total of three M.2 slots, including two that support data-transfer speeds of up to 64 Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables quicker boot-up and app load times with OS or application drives.4
Graphic depicting different M.2 slots on a motherboard.

Cooling

Cooler by design

The PRIME B840M-A WIFI-CSM 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.
PRIME B840M-A WIFI-CSM front view.

Smart Cooling precision

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.6
UI for Fan Xpert 2+

Cooler compatibility

ASUS AIO coolers offer robust performance, high overclocking potential, bold aesthetics and customizable functionality for new motherboards, empowering you to build your dream gaming rig.6

See compatible AIO coolers

A Prime motherboard and AIO cooler on a table.

Flexibility

Empowering connections

This motherboard offers a versatile range of connectivity, including support for WiFi 6E, PCIe 4.0 slot and an arsenal of USB ports which includes Type-C® connections.
WiFi 6E logo

WiFi 6E

Realtek 2.5Gb Ethernet logo

2.5Gb Ethernet

PCIe 4.0 logo

PCIe 4.0

PCIe 4.0 slot logo

PCIe 4.0 slot

USB 5Gbps logo

USB 5Gbps

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.

Learn More

ASUS WiFi Q-Antenna

Realtek 2.5 Gb Ethernet

Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.
Realtek 2.5 Gb Ethernet

Front USB 5Gbps Type-C®

This motherboard features a USB 5Gbps Type-C® front panel connector for speedy data transfers of up to 5Gbps.6
Front USB 5Gbps Type-C®

Customization

Personalization

The PRIME B840M-A WIFI-CSM 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.

UEFI BIOS advanced mode UI.

ASUS GlideX

Enable seamless screen sharing and control across PCs, tablets, and smartphones via wired or wireless connections, supporting multiple platforms.

GlideX Logo

ASUS DriverHub

Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.

ASUS DriverHub UI

Armoury Crate

Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.

ASUS Armoury Crate UI

Aura Sync

Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.

ASUS Aura Sync Logo

Addressable Gen 2 RGB headers

Three addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.

Image depicting PRIME B840M-A WIFI-CSM ARGB connectors.

Customization

DIY friendly

The PRIME B840M-A WIFI-CSM motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.

Q-Antenna

With Q-Antenna, attaching a WiFi antenna to your PC is now easy and fast. Instead of slowly rotating two fasteners until they finally lock in, they just snap into place. Less hassle, and more consistent performance.7

Pre-Mounted I/O Shield

Our pre-installed I/O shield safeguards ports, simplifies the build process, increases functionality and enhances aesthetics for PC DIY enthusiasts.

Graphic depicting the PRIME B840M-A WIFI-CSM pre-mounted I/O Shield.

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.

Graphic depicting the PRIME B840M-A WIFI-CSM BIOS FlashBack feature.

SafeSlot Core+

SafeSlot Core+ is a one-piece stainless-steel brace that shields the slot to protect it from damage. The metal cover is tightly secured to the slot with hooks, and the entire assembly is firmly anchored to the PCB with strengthened solder points to provide a secure foundation for heavyweight graphics cards.

Graphic depicting the PRIME B840M-A WIFI-CSM SafeSlot Core+ feature.
AMD Ryzen 9000 Series CPU

Build for the most advanced pc for gaming and creating

When only the fastest will do, ASUS motherboards deliver. With faster dual-channel DDR5 memory support, AMD EXPO™ technology and PCIe® 4.0 support for both graphics and NVMe, you can play the most demanding games and deliver your biggest projects with the revolutionary performance of an ASUS motherboard and AMD Ryzen™ 9000, 8000, and 7000 Series processors.
  1. © 2024 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow logo, Radeon, Ryzen and combinations thereof are trademarks of Advanced Micro Devices, Inc. Other product names used in this publication are for identification purposes only and may be trademarks of their respective owners.
  1. On the back of the motherboard.↑
  2. Memory overclocking may vary between CPU series. Please refer to the spec table for detailed information.↑
  3. Supported memory types, data rates (speed), and number of DRAM modules vary depending on the CPU and memory configuration. For more information, please refer to the CPU/Memory Support List under the Support tab on the product information page or visit https://www.asus.com/support/download-center/.↑
  4. Actual transmission speeds will be lower than the theoretical maximum speed.↑
  5. WiFi 6E availability and features are dependent on regulatory limitations and co-existence with 5 GHz WiFi.↑
  6. Image(s) for reference only.↑
  7. Video(s) for reference only.↑
  8. Availability of ASUS AI Advisor may vary by region.
    AI Advisor functions may vary by platform. ↑
Product has High-Definition Multimedia Interface.

  • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
  • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
  • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
  • PCB color and bundled software versions are subject to change without notice.
  • Brand and product names mentioned are trademarks of their respective companies.
  • The terms HDMI, HDMI High-Definition Multimedia Interface, HDMI Trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.
  • Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.
  • *Precise specifications and features vary by model . Please refer to the specification page
  • The product (electrical , electronic equipment, Mercury-containing button cell battery) should not be placed in municipal waste. Check local regulations for disposal of electronic products.
  • The use of trademark symbol (TM, ®) appears on this website means that the word text, trademarks, logos or slogans, is being used as trademark under common laws protection and/or registered as Trademark in U.S. and/or other country/region.

Additional information

Weight 2 kg

Specification

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