Asus
Asus Prime B840M-A WIFI-CSM Gaming Desktop Motherboard - AMD B840 Chipset - Socket AM5 - Micro ATX (292938)
- SKU:
- 21105762
- MPN:
- 292938
- Availability:
- Usually ships the same or next business day. In stock at our CA, IL, NJ warehouses.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 12/07/2025 11:57:58 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 - 3 | and pay only $193.81 each 193.81 |
| Buy 4 or above | and pay only $190.51 each 190.51 |
- Stock Update:
- 12/07/2025 11:57:58 AM PST
Description
This item is brand-new, factory sealed.
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.
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.
Features
Restriction of Hazardous Substances (RoHS)
China Restriction of Hazardous Substances (China RoHS)
Taiwan Restriction of Hazardous Substances (Taiwan RoHS)
Waste Electrical and Electronic Equipment Directive (WEEE)
Country of Origin:
China
Specs
| Physical Characteristics | |
| Form Factor | Micro ATX |
| Width | 9.6" |
| Depth | 9.6" |
| Warranty | |
| Limited Warranty | 3 Year |
| I/O Expansions | |
| Total Number of Expansion Slots | 4 |
| PCI Express Standard |
|
| Number of PCI Express x16 Slots | 4 |
| Total Number of PCI Express Slots | 4 |
| Memory | |
| Memory Technology | DDR5 SDRAM |
| Number of Memory Slots | 4 |
| Memory Speed Supported | 7600 MHz |
| Memory Form Factor |
|
| Maximum Memory Supported | 192 GB |
| Error Checking | ECC |
| General Information | |
| Brand Name | Asus |
| Manufacturer Website Address | http://usa.asus.com |
| Marketing Information | 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. 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. |
| Product Type | Gaming Desktop Motherboard |
| Product Name | Prime B840M-A WIFI-CSM Gaming Desktop Motherboard |
| Manufacturer | ASUS Computer International |
| Manufacturer Part Number | PRIME B840M-A WIFI-CSM |
| Product Model | B840M-A WIFI-CSM |
| Product Line | Prime |
| Packaged Quantity | 1 |
| Processor & Chipset | |
| Chipset Manufacturer | AMD |
| Processor Supported |
|
| Total Processor Supported | 1 |
| Processor Socket | Socket AM5 |
| Chipset Model | B840 |
| Technical Information | |
| AI-powered | Yes |
| Onboard Interfaces | |
| Number of SATA Interfaces | 4 |
| Total Number of Onboard USB Ports | 7 |
| Number of M.2 Interfaces | 3 |
| Number of Onboard USB 2.0 Ports | 4 |
| Interfaces/Ports | |
| S/PDIF | Yes |
| HDMI Version | <li>2.1</li> |
| DisplayPort | Yes |
| HDMI | Yes |
| Total Number of USB Ports | 7 |
| Number of Network (RJ-45) Ports | 1 |
| I/O Controller | |
| RAID Supported | Yes |
| Controller Type | Serial ATA/600 |
| RAID Levels |
|
| Video | |
| Onboard Video | CPU Dependent Video |
| Network & Communication | |
| Wireless LAN | Yes |
| Wireless LAN Standard | IEEE 802.11ax |
| Bluetooth | Yes |
| Bluetooth Standard | Bluetooth 5.3 |
| 2.5Gigabit Ethernet | Yes |
| Gigabit Ethernet | Yes |
| Audio | |
| Audio Channels | 7.1 |
Warranty Information