Asus Prime B840M-A CSM motherboard

ASUS Prime motherboards are expertly designed to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A-CSM motherboard offers users and DIY PC builders a variety of performance optimizations through intuitive software and firmware features. It’s designed to be ready for advanced AI PCs, delivering the power and connectivity needed for demanding AI applications.

Features:

ASUS Corporate Stable Model (CSM):
- ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. It offers up to 36 months of product lifecycle support and a 6-month notice at end of life to allow sufficient preparation times for your organization’s product transitions. ASUS Control Center Express, server-grade IT management software, is included with every ASUS CSM motherboard purchase.

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 complete control and easy-to-use features. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.

Optimizing IT Endpoint Management:
- Designed to help IT staff monitor and control devices within their corporate networks, and facilitate inventory verification across multiple locations remotely.

IT maintenance automation:
- Enables IT staff to schedule automatic updates of the latest BIOS, software, and utilities to specific devices or all devices during off-peak times, improving system stability and IT operational flexibility.

Secure management of all endpoints:
- Securely manages endpoint configuration, mobile storage access, and PC software applications, allowing you to create grouping rules on individual devices.

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

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

Improved DDR5 performance:
- Comprehensive memory tuning options are the foundation of PRIME motherboards. The PRIME B840M-A-CSM maximizes the potential of your DDR5 modules, from entry-level modules 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 improved performance.
- For those looking to exceed standard DDR5 speeds, the PRIME B840M-A-CSM offers broad support for AMD Extended Overclocking Profiles (EXPO™) and a wide variety of UEFI settings for further performance tweaking.

Three M.2 slots (up to 64Gbps):
- The PRIME B840M-A-CSM offers a total of three M.2 slots, two of which support data transfer speeds of up to 64Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables faster boot times and quicker loading of applications with operating system drives or applications.

Designed to stay cooler:
- The PRIME B840M-A-CSM motherboard is designed with multiple integrated heatsinks and an array of hybrid fan headers to ensure your system stays cool and stable under intense workloads.

ASUS Fan Xpert 2+:
- ASUS Fan Xpert 2+ software provides complete control over the 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 below the default minimum to keep the system at a whisper when performing light tasks. The fans can also be controlled via the UEFI BIOS.

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

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

Personalization:
- The PRIME B840M-A-CSM enhances the user experience in every aspect, from simplifying BIOS configuration settings to offering customizable RGB lighting controls for a unique system aesthetic.

Built for the ultimate gaming and creation PC:
- When only faster will do, ASUS motherboards deliver. With support for the fastest dual-channel DDR5 memory, AMD EXPO™ technology, and support for PCIe® 4.0 for both graphics and NVMe, you can play the most demanding games and deliver your biggest projects with the breakthrough performance of an ASUS motherboard and AMD Ryzen™ 9000, 8000, and 7000 series processors.

Specifications:

CPU:
- AMD AM5 socket for AMD Ryzen™ 9000, 8000 and 7000 Series desktop processors

Chipset:
- AMD B840 Chipset

Memory:
- 4 DIMM slots, max 192GB, DDR5 Supports up to 7600+ MT/s (OC) with Ryzen™ 9000, 8000, and 7000 Series processors Supports ECC and Non-ECC, unbuffered DIMMs* Dual-channel memory architecture Supports AMD Extended Profiles for Overclocking (EXPO™) ASUS Enhanced Memory Profile (AEMP)

Graphics:
- 2 DisplayPort ports 1 HDMI™ port

Expansion slots:
- For AMD Ryzen™ 9000 and 7000 Series Processors: 1 x PCIe 4.0 x16 slot (supports x16 mode)
- For AMD Ryzen™ 8000 Series Processors: 1 x PCIe 4.0 x16 slot (supports x8/x4 modes)
- AMD B840 Chipset: 2 x PCIe 3.0 x16 slots (supports x1 mode)

Storage:
- Supports a total of 3 M.2 slots and 4 SATA 6Gb/s ports For AMD Ryzen™ 9000 and 7000 Series 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)
- For AMD Ryzen™ 8000 Series 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 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 Realtek 2.5Gb Ethernet port ASUS LANGuard

USB:
- Rear USB Ports (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 Ports (Total 7 ports): 1 USB 5Gbps connector (supports USB Type-C®) 1 USB 5Gbps header supports an additional 2 USB 5Gbps ports 2 USB 2.0 headers support an additional 4 USB 2.0 ports

Audio:
- Realtek 7.1 Surround Sound High Definition Audio Codec Supports: Jack Detection, Multi-streaming, Front Panel Jack Remapping Supports up to 24-Bit/192 kHz playback

Audio Features:
- Audio Shielding Premium Audio Capacitors Dedicated Layers for Audio PCBs

Rear I/O ports:
- 2 10Gbps USB ports (2 x Type-A) 1 5Gbps USB port (1 x USB Type-C®) 4 USB 2.0 ports (4 x Type-A) 2 DisplayPort ports 1 HDMI™ port 1 Realtek 2.5Gb Ethernet port 3 jacks audio 1 BIOS FlashBack™ button

Internal I/O connectors:
- Relating to fans and cooling
- 1 CPU fan header 4 pin 1 CPU OPT fan header 4 pin 2 chassis fan headers 4 pin
- Energy related
- 1x 24-pin main power connector 1x 8-pin CPU +12V power connector
- Storage related
- 3 M.2 slots (Key M) 4 SATA 6Gb/s ports
- USB Related
- 1 USB 5Gbps connector (supports USB Type-C®) 1 USB 5Gbps header supports an additional 2 USB 5Gbps ports 2 USB 2.0 headers support an additional 4 USB 2.0 ports
- Several
- 3 Gen 2 addressable headers 1 Clear CMOS header 1 COM port header 1 Front panel audio header (F_AUDIO) 1 S/PDIF Out header 1 SPI TPM header (14-1 pin) 1 Front panel system header (10-1 pin)

Special Features:
- ASUS 5X PROTECTION III DIGI+ VRM LANGuard Surge Protection SafeSlot Core+ Stainless Steel Rear I/O Ports ASUS Q-Design 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™ Button LED Pre-mounted I/O Shield
- Aura Sync
- Gen 2 Addressable Headers

Software Features:
- ASUS Exclusive Software
- Armoury Crate Aura Creator Aura Sync Fan Xpert 2+ Power Saver ASUS DriverHub TurboV Core ASUS CPU-Z Adobe Creative Cloud (Free Trial) Norton 360 Deluxe (60-day Free Trial) WinRAR (40-day Free Trial)
- UEFI BIOS
- ASUS EZ DIY ASUS CrashFree BIOS 3 ASUS EZ Flash 3 EZ Mode UEFI ASUS BIOS ASUS MyHotkey
- Remote management functions
- Compatible IT management software
- ASUS Control Center Express (ACCE)
- BIOS
- 256Mb Flash ROM, UEFI AMI BIOS
- Manageability
- WOL by PME, PXE

Accessories:
- Cables
- 2 SATA 6Gb/s cables
- Several
- 1 pack of rubber for M.2 2 packs of screws for M.2 SSD
- Documentation
- 1 ACC Express Activation Card 1 Quick Start Guide

Operating system:
- Windows 11, Windows 10 64 bit

Form factor:
- Micro-ATX form factor
- 9.6 inches x 9.6 inches (24.4 cm x 24.4 cm)