MB ASUS PRIME B840M-A-CSM (AMD.AM5.DDR5.mATX)

Description

ASUS PRIME B840M-A-CSM. Processor manufacturer: AMD, Processor socket: Socket AM5, Compatible processors: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series. Supported memory: DDR5-SDRAM, Maximum RAM: 192 GB, Memory type: DIMM. Supported storage drive interfaces: M.2, SATA III, Supported storage drives: HDD & SSD, RAID levels: 0, 1, 5, 10. Maximum resolution: 7680 x 4320 pixels. Ethernet interface type: 2.5 Gigabit Ethernet

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A-CSM motherboard offers users and PC DIY builders a range of performance optimizations via intuitive software and firmware features. Designed as “Advanced AI PC-ready,” it offers the power and connectivity needed for demanding AI applications.

ASUS Corporate Stable Model
ASUS Corporate Stable Model (CSM) is a commercial program designed to deliver stable and reliable motherboards. We offer up to 36 months of product lifecycle support and 6 months' end-of-life notice to give companies ample time to prepare for product transitions. Every ASUS CSM motherboard purchase comes with ASUS Control Center Express, server-grade IT management software.
Learn more about the ASUS CSM program
*Lifecycle support, program offerings, and delivery status may vary by region. Please contact your local sales representative for more information.

ASUS Control Center Express
ASUS Control Center Express is an integrated IT monitoring and management software designed to accelerate deployment, simplify IT operations, and improve productivity through comprehensive control and easy-to-use features. Compatible with over 100 ASUS motherboards, ASUS Control Center Express provides a high-quality, TCO-optimized solution for business needs.

Optimize IT endpoint management
Designed to help IT staff monitor and control devices on their corporate networks and facilitate remote inventory across multiple locations

Automate IT maintenance
Allows IT staff to schedule automatic updates of the latest BIOS, software, and utilities for specific or all devices during off-peak times to improve system stability and IT operational flexibility

Secure management of all endpoints
Secure management of endpoint configuration, access to portable storage, and PC software applications through the ability to create grouping rules for individual devices

performance
AI solutions
ASUS AI Solutions includes AI Advisor, a technical expert with expertise in PC performance.

AI Advisor
The ASUS AI Advisor allows users to explore the functions and advanced features of ASUS motherboards in a simple and straightforward way.7

performance
Digital Power Design
The PRIME B840M-A-CSM features an 8+2+1 phase power supply design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors and consistent performance for everyday use.5

The multi-layer board design quickly dissipates heat around the voltage regulators to improve overall system stability and give the CPU more overclocking headroom.

The Power Saver feature includes various settings to optimize power consumption and maximize energy savings. You can enable CPU power limiting, dim the Aura lighting, and set the fan profile to a power-saving mode. You can also switch the power plan built into Microsoft Windows.

The Digi+ Voltage Regulator Module (VRM) provides real-time control over voltage drop and automatically controls frequency and energy efficiency settings.

Improved memory & storage performance
Improved DDR5 performance
Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B840M-A-CSM maximizes the potential of your DDR5 modules, from entry-level models to extreme-speed kits.2
For entry-level modules without EXPO™ support, the ASUS Enhanced Memory Profile (AEMP) automatically detects the memory chips and provides optimized profiles for improved performance.
For those looking to exceed standard DDR5 speeds, the PRIME B840M-A-CSM offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide range of UEFI settings for further performance enhancements.3

Three M.2 slots (up to 64 Gbit/s)
The PRIME B840M-A-CSM offers a total of three M.2 slots, two of which support data transfer speeds of up to 64 Gbps via PCIe 4.0 and one PCIe 3.0. This enables faster boot and loading times for operating systems and applications.

cooling
Cooler by design
The PRIME B840M-A-CSM motherboard is equipped with multiple onboard heatsinks and a series of hybrid fan headers to ensure your system stays cool and stable even under heavy loads.

Intelligent Cooling Precision

ASUS Fan Expert 2+
ASUS Fan Xpert 2+ software offers comprehensive control over the fans. Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Ultra Quiet mode that reduces fan speeds below the default minimum, keeping your system whisper-quiet during light tasks. The fans can also be controlled via the UEFI BIOS.5

Cooler compatibility
ASUS AIO coolers offer robust performance, high overclocking potential, eye-catching aesthetics, and customizable features for new motherboards, allowing you to build your dream gaming rig.5

flexibility
Stronger connections
This motherboard offers versatile connectivity options, including support for PCIe 4.0 slots and a full arsenal of USB ports, including Type-C® ports.

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

Front USB 5Gbps Type-C®
This motherboard features a USB 5Gbps Type-C® port on the front for fast data transfers of up to 5Gbps.5

Individualization
personalization
The PRIME B840M-A-CSM enhances the user experience in every way, from simplifying BIOS settings to customizable RGB lighting control for a truly personalized system aesthetic.

UEFI BIOS
The UEFI interface offers user-friendly configuration options for PC novices and advanced features for veterans.

ASUS DriverHub
Simplify driver management with automatic detection, one-click installation, and updating 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 Gen 2 RGB headers
Three addressable Gen 2 headers detect the number of LEDs on compatible RGB devices and automatically adjust the lighting effects.

Individualization
DIY-friendly
The PRIME B840M-A-CSM motherboard features EZ PC DIY innovations that simplify and accelerate the PC building process, making DIY easy and convenient.

Pre-assembled connection panel
Our pre-installed I/O shield protects connectors, simplifies assembly, increases functionality, and improves aesthetics for PC DIY enthusiasts.

BIOS FlashBack™
BIOS FlashBack™ simplifies BIOS updates. Simply load the BIOS file onto a FAT32 USB flash drive, plug it into the BIOS FlashBack™ port, and press a key—no CPU or memory required.

SafeSlot Core+
SafeSlot Core+ is a one-piece stainless steel brace that protects the slot from damage. The metal cover is securely attached to the slot with hooks, and the entire assembly is firmly anchored to the board with reinforced solder points to provide a secure foundation for heavy graphics cards.

Q-LED Core
The Q-LED Core display shows colored lights during the power-on self-test (POST) that can help you troubleshoot problems.

Designed for the most advanced PC for playing and creating
When it comes to speed, ASUS motherboards are the first choice. With support for faster dual-channel DDR5 memory, AMD EXPO™ technology, and PCIe® 4.0 support for graphics and NVMe, you can play the most demanding games and tackle your biggest projects with the revolutionary performance of an ASUS motherboard and AMD Ryzen™ 9000, 8000, and 7000 series processors.