ASUS 

PRIMEB840M-AWIFI-CSM ASUS PRIME B840M-A WIFI-CSM AMD AM5 B840 MATX AI READY DDR5

Mfg Part Number:  PRIMEB840M-AWIFI-CSM  
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Price: $196.55
Quantity:
In Stock: 31
Last Updated: Jun 25, 2025
No Sales Tax except these states
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ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen9000 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.

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.

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.

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.

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.

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.

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.

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.

  • 8 Vcore power
  • 2 SOC power
  • 1 Misc power

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.

The Power Saving function contains several settings to easily optimize power consumption and maximize energy savings. You can enable a CPU power limit, darken Aura lighting and set the fan profile to a Power Saving mode. You can also toggle the Power Saver plan that is built into Microsoft Windows.

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.

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.

Main Specification
General Information
Manufacturer ASUS Computer International
Manufacturer Part Number PRIME B840M-A WIFI-CSM
Manufacturer Website Address http://usa.asus.com
Brand Name Asus
Product Line Prime
Product Model B840M-A WIFI-CSM
Product Name Prime B840M-A WIFI-CSM Gaming Desktop Motherboard
Packaged Quantity 1
Product Type Gaming Desktop Motherboard
Technical Information
AI-powered Yes
Processor & Chipset
Chipset Manufacturer AMD
Chipset Model B840
Total Processor Supported 1
Processor Socket Socket AM5
Processor Supported Ryzen 9
Processor Supported Ryzen 8
Processor Supported Ryzen 7
Memory
Number of Memory Slots 4
Memory Form Factor UDIMM
Memory Form Factor DIMM
Maximum Memory Supported 192 GB
Memory Technology DDR5 SDRAM
Memory Speed Supported 7600 MHz
Error Checking ECC
I/O Controller
Controller Type Serial ATA/600
RAID Supported Yes
RAID Levels 5
RAID Levels 10
RAID Levels 0
RAID Levels 1
Video
Onboard Video CPU Dependent Video
Audio
Audio Channels 7.1
Network & Communication
Bluetooth Yes
Bluetooth Standard Bluetooth 5.3
Gigabit Ethernet Yes
2.5Gigabit Ethernet Yes
Wireless LAN Yes
Wireless LAN Standard IEEE 802.11ax
I/O Expansions
Total Number of Expansion Slots 4
PCI Express Standard PCI Express 3.0
PCI Express Standard PCI Express 4.0
Total Number of PCI Express Slots 4
Number of PCI Express x16 Slots 4
Interfaces/Ports
Total Number of USB Ports 7
S/PDIF Yes
HDMI Yes
HDMI Version 2.1
DisplayPort Yes
Number of Network (RJ-45) Ports 1
Onboard Interfaces
Number of SATA Interfaces 4
Number of M.2 Interfaces 3
Total Number of Onboard USB Ports 7
Number of Onboard USB 2.0 Ports 4
Physical Characteristics
Form Factor Micro ATX
Width 9.6"
Depth 9.6"
Miscellaneous
Country of Origin China
Environmental Compliance Taiwan Restriction of Hazardous Substances (Taiwan RoHS)
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Environmental Compliance China Restriction of Hazardous Substances (China RoHS)
Warranty
Limited Warranty 3 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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