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Home Networking Servers & Storage Data Storage ASUS PRIME B840M-A-CSM AMD AM5 DDR5 Motherboard

ASUS PRIME B840M-A-CSM AMD AM5 DDR5 Motherboard

Brand:
Asus

ASUS PRIME B840M-A-CSM is a business-oriented micro-ATX motherboard featuring the AMD B840 chipset, AM5 socket, DDR5 memory support, 2.5Gb Ethernet and multiple M.2 storage slots for professional PC builds and office deployments.

OVERVIEW

  • The ASUS PRIME B840M-A-CSM is a micro-ATX motherboard designed for AMD AM5 desktop processors and professional PC deployments. Built around the AMD B840 chipset, it supports compatible AMD Ryzen 9000, 8000 and 7000 Series desktop processors, along with DDR5 memory.
  • With three M.2 storage slots, four SATA 6Gb/s ports, 2.5Gb Ethernet and USB Type-C connectivity, this motherboard offers flexible options for business desktops, workstation-style systems and custom PC assembly. Its ASUS Corporate Stable Model (CSM) positioning also makes it relevant to IT procurement teams and system integrators planning standardized deployments.

USE CASES

  • Business desktop computers: Build office PCs for productivity, administration and everyday business applications.
  • Corporate IT deployments: Support standardized desktop configurations for organizational hardware rollouts.
  • System integration: Assemble custom AMD Ryzen-based computers for business customers and institutional buyers.
  • Small business workstations: Configure systems for multitasking, reporting, content creation and compatible professional applications.
  • PC assembly and distribution: Source a motherboard platform for custom system builds and component-based product offerings.
  • Storage-focused PC builds: Use compatible M.2 NVMe SSDs and SATA drives to configure storage capacity according to project requirements.

KEY FEATURES

  • AMD AM5 socket: Supports compatible AMD Ryzen 9000, 8000 and 7000 Series desktop processors.
  • AMD B840 chipset: Provides the platform foundation for compatible AM5 desktop systems.
  • DDR5 memory: Four DIMM slots with dual-channel memory architecture.
  • Three M.2 slots: Supports compatible NVMe storage, with slot capabilities depending on processor configuration.
  • 2.5Gb Ethernet: Supports high-speed wired networking for suitable network infrastructure.
  • USB connectivity: Includes rear USB Type-C and USB Type-A ports, plus internal headers for front-panel connectivity.
  • Display outputs: HDMI and dual DisplayPort connections; actual display support depends on the installed processor's graphics capabilities.
  • ASUS CSM platform: Includes business-oriented lifecycle support provisions and ASUS Control Center Express as described by ASUS, subject to regional programme terms.
  • BIOS FlashBack: Provides a convenient supported method for updating the motherboard BIOS. 

TECHNICAL SPECIFICATIONS

  • Brand: ASUS
  • Product series: PRIME
  • Model: PRIME B840M-A-CSM
  • Chipset: AMD B840
  • CPU socket: AMD AM5
  • Supported processors: Compatible AMD Ryzen 9000, 8000 and 7000 Series desktop CPUs
  • Form factor: Micro-ATX
  • Memory type: DDR5
  • Memory slots: 4 × DIMM
  • Memory architecture: Dual-channel
  • M.2 slots: 3
  • SATA ports: 4 × SATA 6Gb/s
  • Networking: Realtek 2.5Gb Ethernet
  • Graphics outputs: 2 × DisplayPort, 1 × HDMI
  • USB connectivity: USB Type-C and Type-A; multiple speeds
  • Expansion: 1 × PCIe 4.0 x16 and 2 × PCIe 3.0 x16 slots operating at x1 mode, subject to CPU configuration
  • Business platform: ASUS Corporate Stable Model (CSM)

WHY CHOOSE THE MODEL?

  • The ASUS PRIME B840M-A-CSM combines the AMD AM5 platform with DDR5 memory, modern storage connectivity and 2.5Gb Ethernet in a compact micro-ATX design. Its CSM positioning is particularly relevant to businesses, IT procurement teams and system integrators that need a motherboard for repeatable PC configurations.

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