Skip to Content

Asus Prime B850M-A-CSM Gaming Desktop Motherboard - AMD B850 Chipset - Socket AM5 - Micro ATX

199.99 199.99
199.99

199.99 / Units
  • Brand
  • Processor Supported
  • Depth
  • Number of PCI Express x16 Slo
  • Total Number of Onboard USB P
  • Product Name
  • Number of Network (RJ-45) Por
  • Marketing Information
  • Number of Onboard USB 2.0 Por
  • Total Number of PCI Express S
  • Brand Name
  • Manufacturer Part Number
  • Width
  • Total Processor Supported
  • Chipset Manufacturer
  • Chipset Model
  • AI-powered
  • RAID Supported
  • Onboard Video
  • Number of M.2 Interfaces
  • Total Number of USB Ports
  • HDMI
  • HDMI Version
  • DisplayPort
  • Gigabit Ethernet
  • 2.5Gigabit Ethernet
  • Onboard S/PDIF Header
  • Number of SATA Interfaces
  • Total Number of Expansion Slots
  • Form Factor
  • Processor Socket
  • Memory Technology
  • Memory Speed Supported
  • Memory Form Factor
  • Number of Memory Slots
  • Error Checking
  • Maximum Memory Supported
  • RAID Levels
  • Controller Type
  • Audio Channels
  • Environmental Compliance
  • Package Contents
  • Limited Warranty
  • Manufacturer
  • Product Type
  • Product Line
  • Product Model
  • Brand Compatibility
  • Manufacturer Website Address
  • PCI Express Standard
This product is eligible for 30-day returns. See our return policy for details. Terms and Conditions
Shipping: 1-6 Business Days

PRIME B850M-A-CSM

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen9000 series processors. The PRIME B850M-A-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 Cache Boost to supercharge large language model (LLM) workflows, ASUS AI Advisor as your technical expert with expertise in PC performance.

AI Cache Boost

Supercharge your large language model (LLM) workflows with AI Cache Boost. Exclusive to ASUS AMD 800 and 600 series motherboards that use 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

PRIME B850M-A-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

Enhanced stability and overclocking.

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.

Digi+ VRM control

Real-time voltage control.

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.

  • Ryzen 7 processors supported for enhanced, dependable system performance with maximum usability
  • DDR5 SDRAM slot for convenient installation of memory
  • RAID supported levels provide data reliability and fault tolerance
  • HDMI interface enables the user to experience a fantastic sound/video quality at the expense of a single cable
  • DisplayPort host interface allows audio and video signals to be shared in a single cable transmission to ensure maximum efficiency
  • Micro ATX form factor for your accessibility convenience and simplicity of usage for Gaming Desktop Motherboard
Brand
Brand ASUS Computer International
CPU / Processor
Processor Supported Ryzen 9
Total Processor Supported 1
Processor Socket Socket AM5
GPU / Graphics
Onboard Video CPU Dependent Video
Memory / RAM
Memory Technology DDR5 SDRAM
Memory Speed Supported 8000 MHz
Memory Form Factor UDIMM
Number of Memory Slots 4
Error Checking ECC
Maximum Memory Supported 256 GB
Storage
RAID Supported Yes
RAID Levels 10
USB Ports
Total Number of Onboard USB P 7
Number of Onboard USB 2.0 Por 4
Total Number of USB Ports 8
HDMI Ports
HDMI Yes
DisplayPort
DisplayPort Yes
Ethernet Port
Number of Network (RJ-45) Por 1
Gigabit Ethernet Yes
2.5Gigabit Ethernet Yes
Audio Ports
Onboard S/PDIF Header Yes
Audio
Audio Channels 7.1
Size / Dimensions
Form Factor Micro ATX
General Features
Chipset Manufacturer AMD
Chipset Model B850
AI-powered Yes
Controller Type Serial ATA/600
Manufacturer ASUS Computer International
Brand Compatibility AMD
Expansion Slots
Number of PCI Express x16 Slo 3
Total Number of PCI Express S 3
Total Number of Expansion Slots 3
PCI Express Standard PCI Express 4.0
Misc Ports
Number of M.2 Interfaces 3
Number of SATA Interfaces 4