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 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.
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.
Six-layer PCB design: 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.
Power Saving: 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.
Digi+ VRM control: The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop; automatically switching frequency and power-efficiency settings.
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.
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.
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.
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.
Cooler by design - VRM heatsink and thermal pads: Massive VRM heatsink and essential thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance.
Cooler by design - AIO pump header: A dedicated PWM/DC header supports self-contained water-cooling setups.
Cooler by design - Multiple temperature sources: Each header can dynamically reference three thermal sensors. Fan Xpert 2+ lets you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.
Cooler by design - 4-Pin PWM/DC fan: Each onboard header supports auto-detection of PWM or DC fans.
Cooler by design - M.2 heatsink: One M.2 heatsink takes care of the M.2 slot; preventing throttling that can occur with M.2 storage during extended transfers.
Cooler by design - Passive chipset heatsink: An aluminum passive chipset heatsink ensures optimal cooling and stable performance. It is more durable and longer-lasting than heatsinks with fans; which can be vulnerable to the buildup of dust and debris.
Cooler by design - Smart protection: A dedicated integrated circuit protects each fan header from overheating and excess current.
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.
Smart Cooling precision - 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.
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: 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.
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.
Front USB 5Gbps Type-C: This motherboard features a USB 5Gbps Type-C front panel connector for speedy data transfers of up to 5Gbps.
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.
Personalization - UEFI BIOS: The UEFI interface delivers easy-to-use configuration options for PC beginners; and advanced features for veterans.
Personalization - ASUS GlideX: Enable seamless screen sharing and control across PCs; tablets; and smartphones via wired or wireless connections; supporting multiple platforms.
Personalization - ASUS DriverHub: Simplify driver management with automatic detection; one-click installation and update for smooth; efficient system performance.
Personalization - Armoury Crate: Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.
Personalization - Aura Sync: Complete RGB lighting control for enthusiast systems; ensuring seamless synchronization with compatible hardware.
Personalization - Addressable Gen 2 RGB headers: Three addressable Gen 2 headers detect LED counts on compatible RGB devices; automatically adjusting lighting effects accordingly.
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.
DIY friendly - 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
DIY friendly - Q-LED Core: The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.
DIY friendly - 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.
DIY friendly - 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.
DIY friendly - 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.
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.
Product Features:
- ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards
- Ready for Advanced AI PC - Designed for the future of AI computing; with the power and connectivity needed for demanding AI applications
- AMD AM5 Socket - Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
- Enhanced Power Solution - 6-layer PCB; alloy chokes and durable capacitors for stable power delivery
- Ultrafast Connectivity - Wi-Fi 6E; PCIe 4.0 x16 slot; PCIe 4.0 M.2 slots; Realtek 2.5Gb Ethernet; rear USB 10Gbps Type-A ports; rear and front USB 5Gbps Type-C support
- Comprehensive Cooling - VRM and M.2 heatsinks; PCH heatsink; hybrid fan headers and Fan Xpert 2+
- DIY Friendly Design - Pre-mounted I/O shield; BIOS FlashBack; M.2 heatsink; Q-Antenna; Q-Dashboard; Q-LED Core
- Unmatched Personalization - Three Addressable Gen 2 headers; all configurable with ASUS-exclusive Aura Sync RGB lighting
Specifications:
- News & Updates: Socket AM5
- CPU: AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
- Chipset: AMD B840 Chipset
- Memory:
- 4 x DIMM slots; max. 256GB; DDR5
- Supports up to 7600+MT/s (OC) with Ryzen 9000 & 8000 & 7000 Series Processors; ECC and Non-ECC; Un-buffered DIMM
- Dual channel memory architecture
- Supports AMD Extended Profiles for Overclocking (EXPO)
- ASUS Enhanced Memory Profile (AEMP)
- Graphics:
- 2 x DisplayPort
- 1 x HDMI port
- Expansion Slots:
- AMD Ryzen 9000 & 7000 Series Desktop Processors: 1 x PCIe 4.0 x16 slot (supports x16 mode)
- AMD Ryzen 8000 Series Desktop Processors: 1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
- AMD B840 Chipset: 2 x PCIe 3.0 x16 slots (support x1 mode)
- Storage:
- Total supports 3 x M.2 slots and 4 x SATA 6Gb/s ports
- AMD Ryzen 9000 & 7000 Series Desktop Processors:
- M.2_1 slot (Key M); type 2280 (supports PCIe 4.0 x4 mode)
- M.2_2 slot (Key M); type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
- AMD Ryzen 8000 Series Desktop Processors
- M.2_1 slot (Key M); type 2280 (supports PCIe 4.0 x4 mode)
- M.2_2 slot (Key M); type 2242/2260/2280 (supports PCIe 4.0 x4/x2 mode)
- AMD B840 Chipset
- M.2_3 slot (Key M); type 2280 (supports PCIe 3.0 x4 mode)
- 4 x SATA 6Gb/s ports
- AMD RAIDXpert2 Technology:
- Ryzen 9000 Series Processors: RAID 0/1/5/10
- Ryzen 8000 Series Processors: RAID 0/1
- Ryzen 7000 Series Processors: RAID 0/1/10
- Ethernet:
- 1 x Realtek 2.5Gb Ethernet
- ASUS LANGuard
- Wireless & Bluetooth:
- Wi-Fi 6E
- 2x2 Wi-Fi 6E (802.11ax)
- Supports 2.4/5/6GHz frequency band
- Bluetooth v5.3
- USB:
- Rear USB (Total 7 ports):
- 2 x USB 10Gbps ports (2 x Type-A)
- 1 x USB 5Gbps port (1 x USB Type-C)
- 4 x USB 2.0 ports (4 x Type-A)
- Front USB (Total 7 ports):
- 1 x USB 5Gbps connector (supports USB Type-C)
- 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
- 2 x USB 2.0 headers support 4 additional USB 2.0 ports
- USB Type-C power delivery output: max. 5V/3A
- Audio:
- Realtek 7.1 Surround Sound High Definition Audio CODEC:
- Supports: Jack-detection; Multi-streaming; Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
- Audio Features:
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers
- Back Panel I/O Ports:
- 2 x USB 10Gbps ports (2 x Type-A)
- 1 x USB 5Gbps port (1 x USB Type-C)
- 4 x USB 2.0 ports (4 x Type-A)
- 2 x DisplayPort
- 1 x HDMI port
- 1 x Wi-Fi module
- 1 x Realtek 2.5Gb Ethernet port
- 3 x Audio jacks
- 1 x BIOS FlashBack button
- Internal I/O Connectors:
- Fan and Cooling Related:
- 1 x 4-pin CPU Fan header
- 1 x 4-pin CPU OPT Fan header
- 1 x 4-pin AIO Pump header
- 3 x 4-pin Chassis Fan headers
- Power Related:
- 1 x 24-pin Main Power connector
- 1 x 8-pin +12V CPU Power connector
- Storage Related:
- 3 x M.2 slots (Key M)
- 4 x SATA 6Gb/s ports
- USB:
- 1 x USB 5Gbps connector (supports USB Type-C)
- 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
- 2 x USB 2.0 headers support 4 additional USB 2.0 ports
- Miscellaneous:
- 3 x Addressable Gen 2 headers
- 1 x Clear CMOS header
- 1 x COM Port header
- 1 x Front Panel Audio header (F_AUDIO)
- 1 x S/PDIF Out header
- 1 x SPI TPM header (14-1 pin)
- 1 x 10-1 pin Front Panel System header
- Special Features:
- ASUS 5X PROTECTION III:
- DIGI+ VRM
- LANGuard
- Overvoltage protection
- SafeSlot Core+
- Stainless-steel back I/O
- ASUS Q-Design:
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED Core
- Q-Slot
- ASUS Thermal Solution:
- M.2 heatsink
- VRM heatsink design
- ASUS EZ DIY:
- BIOS FlashBack button
- BIOS FlashBack LED
- Pre-mounted I/O shield
- Aura Sync:
- Addressable Gen 2 headers
- Software Features:
- ASUS Exclusive Software:
- Armoury Crate: Aura Creator; Aura Sync; Fan Xpert 2+; Power Saving
- ASUS DriverHub
- ASUS GlideX
- TurboV Core
- ASUS CPU-Z
- Norton 360 Deluxe (60 Days Free Trial)
- WinRAR (40 Days Free Trial)
- UEFI BIOS:
- ASUS EZ DIY: ASUS CrashFree BIOS 3; ASUS EZ Flash 3; ASUS UEFI BIOS EZ Mode; ASUS MyHotkey
- Remote Management Features:
- IT Management software supported: ASUS Control Center Express (ACCE)
- BIOS: 256 Mb Flash ROM; UEFI AMI BIOS
- Manageability: WOL by PME; PXE
- Operating System: Windows 11; Windows 10 64-bit
- Form Factor:
- Micro-ATX Form Factor
- 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
