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ShopMotherboardsASUS PRIME B850-PLUS-CSM AMD B850 Socket AM5 ATX
ASUS PRIME B850-PLUS-CSM AMD B850 Socket AM5 ATX
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ASUS PRIME B850-PLUS-CSM AMD B850 Socket AM5 ATX

£155.40

£186.48 inc. VAT

Low Stock(100)MPN: 90MB1LC0-M0EAYC
🚚 Next-day delivery £4.95
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Key Features

ASUS PRIME B850-PLUS-CSM
Motherboard
ATX
Socket AM5
AMD B850 Chipset
USB-C 3.2 Gen2, USB 3.2 Gen 2, USB 3.2 Gen 1, USB-C 3.2 Gen 1
2.5 Gigabit LAN
onboard graphics (CPU required)

Product Overview

AI-generated summary

For £156.61 ex-VAT, the ASUS PRIME B850-PLUS-CSM feels like a sensible “get the job done” AM5 board for office PCs, light workstation builds, and general IT deployments where you want reliability and straightforward setup more than flashy features. ASUS’ Prime line tends to be good value because it prioritises stable power/firmware support and sensible BIOS behaviour—important when you’re building and maintaining multiple machines and don’t want to waste time troubleshooting. If you’re putting together a fleet of desktops (or a small number of towers) and just need an ATX board that behaves, this is the kind of pick that won’t annoy you later.

That said, I wouldn’t buy this if you’re trying to squeeze maximum performance or you need lots of expandability for niche add-in cards—PRIME boards generally aren’t the best “future-proofing” option compared with higher-tier models. Also, if your business relies on very specific add-on hardware, it’s worth double-checking connectivity/slot layout against your exact bill of materials before ordering, because value boards can be less flexible. Buy it if you want dependable AM5 support at a fair price; avoid it if you’re chasing enthusiast/upgrade-heavy builds or complex hardware requirements.

Specifications

Processor

Processor manufacturerAMD
Processor socketSocket AM5
Compatible processor seriesAMD Ryzen 7000 Series,AMD Ryzen 8000 Series,AMD Ryzen 9000 Series

Memory

Supported memory typesDDR5-SDRAM
Number of memory slots4
Memory slots typeDIMM
Memory channelsDual-channel
ECC сompatibilityECC & non-ECC

Storage controllers

Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2,SATA III
Number of HDDs supported4
Number of storage drives supported7
RAID supportY

Graphics

Parallel processing technology supportNot supported

Internal I/O

USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
Number of SATA III connectors4
S/PDIF out connectorY
Front panel audio connectorY

Rear panel I/O ports

USB 2.0 ports quantity2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity3
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
Ethernet LAN (RJ-45) ports1

Network

Ethernet LANY
Ethernet interface type2.5 Gigabit Ethernet
Wi-FiN

Features

Motherboard chipsetAMD B850
Audio output channels7.1 channels
Product colourMulticolour
Component forPC
Motherboard form factorATX

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