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ASUS PRIME B850-PLUS-CSM WiFi AM5 ATX Motherboard

Brand: ASUS
ASUS PRIME B850-PLUS-CSM, AMD, Socket AM5, AMD  | 90MB1LC0-M0EAYC
ASUS PRIME B850-PLUS-CSM WiFi AM5 ATX Motherboard
€249.15 inc. VAT
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90MB1LC0-M0EAYC
209.37 232.63
249.15 inc. VAT
Ships from EU stock: 44 item(s)
Product Code04:533634 EAN Code4711387982037 ManufacturerASUS

Quick Specs

Socket
AMD AM5
Chipset
AMD B850
Form Factor
ATX
Memory
4× DDR5 DIMM, up to 256GB
Storage
3× M.2 + 4× SATA 6Gb/s
Networking
Wi-Fi 6E + 2.5GbE LAN
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ASUS PRIME B850-PLUS-CSM WiFi AM5 ATX Motherboard

A business-ready AM5 ATX motherboard with DDR5, PCIe 5.0, Wi-Fi 6E, 2.5GbE networking and practical ASUS management features.
AMD AM5B850 ChipsetDDR5Wi-Fi 6E

The ASUS PRIME B850-PLUS-CSM WiFi is an ATX motherboard for AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series desktop processors. It is a practical choice for modern office, business and productivity PCs that need DDR5 memory, PCIe 5.0 graphics support, fast M.2 storage, built-in Wi-Fi 6E and stable wired 2.5GbE networking.

Compatibility Note: Please confirm CPU support, BIOS version, DDR5 memory QVL, case size and cooler clearance before purchase. PCIe and M.2 behavior can vary depending on the installed Ryzen processor.
Best For
✓ AMD Ryzen AM5 office PCs
✓ Business and managed deployments
✓ DDR5 productivity builds
✓ Wi-Fi 6E and 2.5GbE connectivity

Key Features

 
AM5 Ryzen Platform
Supports AMD Ryzen 9000, 8000 and 7000 Series desktop processors on the AM5 socket, giving the system a current-generation AMD foundation.
 
DDR5 and PCIe 5.0 Ready
Four DDR5 DIMM slots and PCIe 5.0 x16 support make it suitable for responsive business PCs, productivity systems and upgrade-ready builds.
 
Fast Storage and Networking
Three M.2 slots, four SATA ports, Wi-Fi 6E and Realtek 2.5Gb Ethernet provide flexible storage and reliable network options for daily work.
 
CSM Business Focus
The CSM model is suited for business environments where stable availability, management features and practical maintenance tools matter.

Technical Specifications

Product Type Motherboard
Model PRIME B850-PLUS-CSM WiFi
Part Number 90MB1LC0-M0EAYC
EAN 4711387982037
CPU Socket AMD AM5
CPU Support AMD Ryzen 9000, 8000 and 7000 Series desktop processors
Chipset AMD B850
Form Factor ATX, 30.5 cm × 24.4 cm
Memory 4× DDR5 DIMM, up to 256GB, up to 8000+MT/s OC
Expansion Slots 1× PCIe 5.0 x16 + 1× PCIe 4.0 x16 + 2× PCIe 3.0 x16
M.2 Storage 3× M.2 slots, including PCIe 5.0 x4 support with compatible Ryzen processors
SATA 4× SATA 6Gb/s
Networking Wi-Fi 6E + Bluetooth 5.3 + Realtek 2.5Gb Ethernet
Rear Display Outputs 1× DisplayPort + 1× HDMI
Rear USB 1× USB-C 10Gbps + 3× USB-A 10Gbps + 2× USB-A 5Gbps + 2× USB 2.0
Front USB-C Header USB 5Gbps Type-C header
Audio Realtek 7.1 surround sound HD audio
Operating System Support Windows 11, Windows 10 64-bit

Frequently Asked Questions

Which processors does this motherboard support?
It supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series desktop processors. Always confirm the CPU support list and BIOS version before installation.
Does it include wireless networking?
Yes, this model includes Wi-Fi 6E and Bluetooth 5.3, plus Realtek 2.5Gb Ethernet for fast wired networking.
Is it suitable for business PCs?
Yes, the CSM version is suitable for business-oriented AM5 builds where stable availability, practical connectivity and manageability features are important.
Singular Expert Insight
Choose this model if you want an AM5 ATX motherboard for a business or productivity PC with DDR5, Wi-Fi 6E, 2.5GbE LAN and PCIe 5.0 storage support. If you need a more gaming-focused board with stronger VRM branding or higher-end rear I/O, consider a TUF or ROG model instead.

Buyer’s Guide

Buy it if
You are building a Ryzen AM5 business or productivity PC and want DDR5, Wi-Fi 6E, 2.5GbE LAN and multiple M.2 slots.
Skip it if
You need premium gaming extras, Wi-Fi 7, USB4 rear ports or a more advanced enthusiast chipset platform.
Also consider
Consider an ASUS TUF B850 motherboard for a more gaming-oriented build, or an X870 model if USB4 and higher-end connectivity are required.

Features - ASUS - 90MB1LC0-M0EAYC

CPU Socket
  • Socket AM5
More Details
Product Code
04:533634
EAN Code
4711387982037
Manufacturer
ASUS
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