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ASUS PRIME B840M-A WIFI - Motherboard - micro ATX - Socket AM5 - AMD B840 Chipset - USB-C 3.2 Gen 1, USB 3.2 Gen 1 - 2.5 Gigabit LAN, Bluetooth, Wi-Fi 6E - onboard graphics (CPU required) - HD Audio (8-channel)

MPN 90MB1J20-M0EAY0 EAN 4711387797143 ASUS
Trade customers only
£110.02 ex VAT £132.02 inc VAT
In stock · 218 available
Trade customers only: orders need a verified business account. Prices ex VAT; VAT is added at checkout.
Quote-led: a person reviews pricing and stock before you commit.
Genuine stock with the manufacturer warranty intact.
Structured returns with credit notes when something is wrong.
Questions? 01224 600337 — Aberdeen & across the UK.
Fresh data: stock and pricing updated 22 Oct 2026.

Description

Manufacturer Code: 90MB1J20-M0EAY0

Overview

ASUS PRIME B840M-A WIFI - Motherboard - micro ATX - Socket AM5 - AMD B840 Chipset - USB-C 3.2 Gen 1, USB 3.2 Gen 1 - 2.5 Gigabit LAN, Bluetooth, Wi-Fi 6E - onboard graphics (CPU required) - HD Audio (8-channel) is available through DCS Components. It sits within the Motherboards category.

Key product details

  • Motherboard
  • micro ATX
  • Socket AM5
  • AMD B840 Chipset
  • USB-C 3.2 Gen 1, USB 3.2 Gen 1

Procurement and setup support

Available for quote while live availability remains in stock. DCS can help with procurement, compatibility checks, configuration planning, installation support and long-term managed IT lifecycle support.

EAN: 4711387797143

Specifications

Processor
Processor manufacturerAMD
Processor socketSocket AM5
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Memory
Supported memory typesDDR5-SDRAM
Number of memory slots4
Memory slots typeDIMM
Memory channelsDual-channel
ECC сompatibilityECC & Non-ECC
Maximum internal memory192 GB
Unbuffered memoryYes
Storage controllers
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2, SATA III
Number of HDDs supported4
Number of storage drives supported7
RAID supportYes
RAID levels0, 1, 5, 10
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 connectorYes
Front panel audio connectorYes
Front panel connectorYes
ATX Power connector (24-pin)Yes
CPU fan connectorYes
Number of chassis fan connectors3
Number of COM connectors1
TPM connectorYes
12V power connectorYes
Rear panel I/O ports
USB 2.0 ports quantity4
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity2
Ethernet LAN (RJ-45) ports1
HDMI ports quantity1
DisplayPorts quantity2
WiFi-AP antenna jack1
Network
Ethernet LANYes
Ethernet interface type2.5 Gigabit Ethernet
Wi-FiYes
Top Wi-Fi standardWi-Fi 6E (802.11ax)
Wi-Fi standardsWi-Fi 6E (802.11ax)
BluetoothYes
Bluetooth version5.3
Features
Motherboard chipsetAMD B840
Audio output channels7.1 channels
Component forPC
Motherboard form factormicro ATX
Motherboard chipset familyAMD
Windows operating systems supportedWindows 10 x64, Windows 11
Expansion slots
PCI Express x16 (Gen 3.x) slots2
PCI Express x16 (Gen 4.x) slots1
Number of M.2 (M) slots3
1st M.2 largest key size2280
1st M.2 highest PCI Express generation4.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation3.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
Packaging data
Package width275 mm
Package depth275 mm
Package height67.5 mm
Package weight1.52 kg
Weight & dimensions
Width244 mm
Depth244 mm
Packaging content
Cables includedSATA
Antenna includedYes
Screws includedYes
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