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MSI PRO B840M-B Micro ATX AM5 Motherboard DDR5 2.5GbE

Brand:
MSI
MSI PRO B840M-B mATX AM5 Motherboard
MSI PRO B840M-B Micro ATX AM5 Motherboard DDR5 2.5GbE
€131.13 inc. VAT
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7E76-002R
€110.19 €122.43
€131.13 inc. VAT
Ships from EU stock: 19 item(s)
Product Code
03:274829
EAN Code
4711377360166
Manufacturer
MSI

Quick Specs

CPU Socket
AMD AM5
Chipset
AMD B840
Form Factor
Micro ATX
Memory
2× DDR5, up to 128GB
Expansion
PCIe 4.0 x16
Storage
2× M.2 Gen4 + 4× SATA 6G
Networking
2.5G LAN
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MSI PRO B840M-B Micro ATX AM5 Motherboard

A practical AMD B840 Micro ATX motherboard for AM5 desktop builds, with DDR5 support, PCIe 4.0 expansion, dual M.2 Gen4 storage, 2.5G LAN and front USB-C.
AMD B840AM5DDR52.5G LAN

The MSI PRO B840M-B is a Micro ATX motherboard for AMD AM5 desktop systems, designed for practical Ryzen 9000, 8000 and 7000 Series builds. It is a strong fit for office PCs, home desktops and value-focused productivity systems where DDR5 memory, PCIe 4.0 graphics support, dual M.2 Gen4 storage, 2.5G wired networking and straightforward installation features matter.

Compatibility Note: Please confirm CPU, DDR5 memory, case, cooler and BIOS compatibility before purchase. This motherboard uses the AMD AM5 socket and does not support older AM4 processors or DDR4 memory.
Best For
✓ AMD AM5 value desktop builds
✓ Compact Micro ATX systems
✓ DDR5 productivity PCs
✓ Dual NVMe SSD configurations

Key Features

 
AM5 Platform Support
Support for AMD Ryzen 9000, 8000 and 7000 Series desktop processors gives this board a current AM5 foundation for modern desktop builds.
 
DDR5 Memory Ready
Two DDR5 UDIMM slots support up to 128GB memory, dual-channel operation and AMD EXPO memory profiles for modern DDR5 configurations.
 
Dual Gen4 M.2 Storage
Two CPU-connected M.2 slots support PCIe 4.0 x4 storage, giving more NVMe flexibility than many entry-level AM5 boards with only one M.2 slot.
 
Fast Wired Networking
Realtek 2.5G LAN, front USB 5Gbps Type-C support, HDMI, VGA and practical rear USB connectivity make it useful for everyday office and home PC builds.

Technical Specifications

Model MSI PRO B840M-B
Part Number 7E76-002R
EAN 4711377360166
CPU Support AMD Ryzen 9000, 8000 and 7000 Series Desktop Processors
CPU Socket AMD AM5
Chipset AMD B840
Form Factor Micro ATX, 226mm × 243.84mm
Memory 2× DDR5 UDIMM, up to 128GB, dual-channel, DDR5 8000+ MT/s OC support, AMD EXPO support
Expansion Slots 1× PCIe x16 slot, 1× PCIe x1 slot; PCIe 4.0 x16 support depends on installed Ryzen processor
Storage 2× M.2 PCIe 4.0 x4 slots, 4× SATA 6G ports
Networking Realtek 8125D 2.5G LAN
Rear USB 4× USB 5Gbps Type-A, 2× USB 2.0
Internal USB 1× front USB 5Gbps Type-C header, 2× front USB 5Gbps Type-A ports, 4× front USB 2.0 ports
Display Outputs HDMI 2.1 up to 4K 60Hz, VGA, compatible CPU with integrated graphics required
Audio Realtek ALC897 7.1-channel HD audio

Frequently Asked Questions

Which processors does this motherboard support?
It supports AMD Ryzen 9000, 8000 and 7000 Series desktop processors on the AM5 socket. Always check the latest CPU support list and BIOS version before building.
Does this model include Wi-Fi?
No built-in Wi-Fi is listed for the MSI PRO B840M-B. Use a compatible add-in Wi-Fi adapter if wireless networking is required.
How many M.2 SSD slots does it have?
It includes two M.2 slots, both supporting up to PCIe 4.0 x4 NVMe SSDs, with lane behavior depending on the installed Ryzen processor.
Singular Expert Insight
Choose this model if you need a budget-friendly AM5 Micro ATX board with DDR5, two Gen4 M.2 slots and 2.5G LAN for a practical Ryzen build. If you need built-in Wi-Fi, more rear USB options or higher-end chipset features, consider a B850 or X870 motherboard instead.

Buyer’s Guide

Buy it if
You are building a cost-conscious AMD AM5 desktop and want Micro ATX sizing, DDR5 support, PCIe 4.0 graphics, dual Gen4 M.2 storage and 2.5G LAN.
Skip it if
You need AM4 processor support, DDR4 memory, built-in Wi-Fi, many rear USB ports, or premium chipset features for advanced builds.
Also consider
Consider a B850 board if you want a stronger AM5 feature set, or an X870 model if USB4, more expansion and higher-end connectivity are important.

Features - MSI - 7E76-002R

More Details
Product Code
03:274829
EAN Code
4711377360166
Manufacturer
MSI
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