ASUS PRIME B840-PLUS WIFI-CSM AM5 ATX Motherboard

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ASUS PRIME B840-PLUS WIFI-CSM AM5 ATX Motherboard
Key Features
  • ATX Form Factor
  • AMD B840 Chipset
  • AM5 Socket
  • 4 x Dual-Channel DDR5 ECC Slots
Designed to provide stable and reliable performance, the ASUS PRIME B840-PLUS WIFI-CSM ATX Motherboard may be outfitted AMD Ryzen 7000, 8000, and 9000 series desktop processors with the AM5 socket to deliver smooth performance for demanding applications and AI workloads.
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ASUS PRIME B840-PLUS WIFI-CSM Overview

Designed to provide stable and reliable performance, the ASUS PRIME B840-PLUS WIFI-CSM ATX Motherboard may be outfitted AMD Ryzen 7000, 8000, and 9000 series desktop processors with the AM5 socket to deliver smooth performance for demanding applications and AI workloads.

Install up to three M.2 PCIe 4.0 SSDs alongside one PCIe 3.0 and four SATA III drives, providing you with plenty of space to store your applications and important project files. The four DDR5 DIMM slots support up to 256GB of 7600 MT/s overclocked ECC memory. You can install a powerful graphics cards into the PCIe 4.0 x16 slot while reserving the PCIe 3.0 x16 (x4 mode) and two PCIe 3.0 x16 (x1 mode) slots for other compatible expansions.

The rear panel features a USB-A 3.2 Gen 2 port alongside a USB-C port that can transfer up to 10 Gb/s with compatible devices. There are also two 5 Gb/s USB-A 3.2 Gen 1 ports available. You can use the four USB-A 2.0 ports for keyboards, mice, and other peripherals. Built-in Wi-Fi 6E (802.11ax) support and a 2.5 Gb/s Ethernet port provide you with fast connections to compatible network devices for smooth video streaming and file transfers. Use the HDMI 2.1 and DisplayPort 1.4 ports work with CPUs with integrated graphics. Windows 10 or 11 is required to take advantage of all this motherboard's features.

ASUS Corporate Stable Model
ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. ASUS CSM offers 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 a real-time IT monitoring and management tool designed for business that improves productivity and enhances security, helping prevent unauthorized access and data leaks. The intuitive dashboard enables easy, real-time hardware and software management across your organization. Optimize IT endpoint management, automate IT maintenance, and securely manage all security endpoints with the ASUS Control Center Express.
AI Solutions
AI Cache Boost
Supercharge your large language model (LLM) workflows with AI Cache Boost. Designed for use with Ryzen 9000 series CPUs, this BIOS setting optimizes CPU cache and memory pathways to deliver up to 29% faster local LLM performance with high-speed memory tuning.
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
Equipped with 8+2+1 power stages with a Digi+ VRM control and discrete MOSFETs, this motherboard delivers stable and efficient power throughout the system.
Enhanced DDR5 Performance
The PRIME B840-PLUS WIFI-CSM maximizes the potential of your DDR5 modules with ASUS Enhanced Memory Profile (AEMP) technology, which automatically detects memory chips and provides optimized profiles for entry-level builders. Experienced users can take advantage of AMD Extended Profiles for Overclocking (EXPO) support for a variety of performance tweaks.
Comprehensive Cooling
Multiple heatsinks and an array of hybrid fan headers with AIO support allow you to efficiently dissipate heat for optimal performance.
ASUS Fan Xpert 2+
The 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.
DIY Friendly
Q Technologies
ASUS Q-Dashboard, Q-DIMM, Q-LED Core, and Q-slot features, along with a pre-mounted I/O shield, help to simplify installation.
ASUS WiFi Q-Antenna
Dual transceivers support the 2.4, 5, and 6 GHz bands to enable faster throughput, with directional sensitivity to improve signal quality and cover greater distances. You can also pair wireless Bluetooth peripherals such as speakers, headsets, keyboards, and mice with the wireless system.
BIOS FlashBack
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.
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 heavy graphics cards.
Personalization
ASUS GlideX
Using this app enables smooth screen sharing and control across PCs, tablets, and smartphones via wired or wireless connections, across multiple platforms.
ASUS DriverHub
Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.
Armoury Crate
Customize Aura Sync RGB and control ASUS devices using the Armoury Crate software.
Aura Sync
Enhance your immersion with RGB lighting effects, including modes that adapt to the on-screen action. Then synchronize them with Aura Sync compatible peripherals such as keyboards, mice, and monitors.
Addressable Gen 2 RGB headers
The three addressable Gen 2 headers automatically optimize lighting effects for the number of LEDs present on compatible ARGB gear.
UPC: 197105797284

ASUS PRIME B840-PLUS WIFI-CSM Specs

Key Specs
Chipset
AMD B840
CPU Socket
AM5
Memory Slots
4x 288-Pin
Memory Type Support
DDR5
M.2 Slots
2280
Expansion Slots
1x PCIe 4.0 x16
3x PCIe 3.0 x16
Wi-Fi
Wi-Fi 6E (802.11ax)
Form Factor
ATX
CPU
Chipset
AMD B840
CPU Socket
AM5
Back Panel I/O
USB I/O
1x USB-C (USB 3.1/3.2 Gen 2)
1x USB-A (USB 3.1/3.2 Gen 2)
2x USB-A (USB 3.0 / 3.1/3.2 Gen 1)
4x USB-A (USB 2.0)
Thunderbolt I/O
No
Display I/O
1x HDMI Output
1x DisplayPort Output
Audio I/O
3x 1/8" / 3.5 mm
Ethernet / Controller
1x Realtek 2.5Gigabit
Wi-Fi Antenna
2x Connector
Buttons
BIOS Flashback
Memory
Memory Slots
4x 288-Pin
Memory Type Support
DDR5
Maximum Capacity
256 GB
Channel Architecture
Dual Channel
ECC Support
Non-ECC Unbuffered
Storage Expansion
SATA
4x SATA III
M.2 Slots
2x M.2 (M Key) 2280 (PCIe 4.0 x4)
1x M.2 (M Key) 2280 (PCIe 3.0 x4)
Optane Memory Support
No
RAID Support
RAID 0, 1, 5, 10
Internal I/O
Expansion Slots
1x PCIe 4.0 x16
3x PCIe 3.0 x16
USB
1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 2 USB-A Port)
2x USB 2.0 Header (Supports 4 USB-A Port)
Air Cooling
2x 4-Pin CPU
4x 4-Pin System
Liquid Cooling
1x 4-Pin Pump
Power Connectors
1x 24-Pin Mainboard
1x 8-Pin CPU
1x 12V-2X6 (12VHPWR)
Security
Chassis Intrusion, TPM Header
Audio
1x S/PDIF
Diagnostics
Clear CMOS
Add-On
1x Thunderbolt Header
BIOS
ROM
256 Mb
Front Panel I/O
Front Panel I/O
AAFP
Audio
Audio Codec
Realtek (7.1-Channel)
DAC
No
Wireless
Wi-Fi
Wi-Fi 6E (802.11ax): Tri-Band (2.4, 5, & 6 GHz) with MU-MIMO Support (2 x 2)
Bluetooth
Bluetooth 5.3
Software
OS Compatibility
Windows 10 or Later
Physical
Form Factor
ATX
Dimensions
12 x 9.6" / 30.5 x 24.4 cm
Packaging Info
Package Weight
3.64 lb
Box Dimensions (LxWxH)
13.9 x 10.8 x 2.7"

ASUS PRIME B840-PLUS WIFI-CSM Reviews

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