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Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX

Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
36 mo.
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
R2,841
The ASUS PRIME B840M-A WIFI motherboard is designed to support AMD Ryzen™ 9000 series processors and to serve as a foundation for custom desktop systems. It offers a micro-ATX form factor with integrated Wi‑Fi connectivity and a feature set aimed at stable platform performance, system tuning and con... Read More
Stock 25 Code 120999 Brand ASUS Model 90MB1J20-M0EAY0 Warranty 3 Years

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Estimated delivery Thursday, October 1
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The ASUS PRIME B840M-A WIFI motherboard is designed to support AMD Ryzen™ 9000 series processors and to serve as a foundation for custom desktop systems. It offers a micro-ATX form factor with integrated Wi‑Fi connectivity and a feature set aimed at stable platform performance, system tuning and connectivity for everyday computing and AI workloads.

Advantages

The PRIME B840M-A WIFI provides a balance of performance and connectivity with built-in Wi‑Fi, multiple expansion options and firmware/software utilities for system optimization. It is prepared for Advanced AI PC use, enabling users to run AI applications that require reliable processing and network access. The board is suitable for PC builders seeking a compact, capable motherboard for Ryzen 9000 CPUs.

Key specifications

  • Form factor: micro-ATX
  • Compatible CPUs: AMD Ryzen™ 9000 series
  • Integrated wireless: Wi‑Fi (onboard)
  • Series: ASUS PRIME B840M-A WIFI
  • Target use: desktop PC building, AI-ready platform

How to use

Install the motherboard into a compatible micro-ATX case, fit a supported AMD Ryzen™ 9000 series processor, install memory modules and connect storage and power according to the manual. Use the included UEFI firmware and ASUS utilities to update drivers, adjust system settings and enable network connectivity. For AI workloads, ensure appropriate cooling, install required software frameworks and connect to a reliable network via the onboard Wi‑Fi or wired LAN.

Recommendations

Follow ASUS installation guidelines and update the UEFI firmware before first use. Pair the PRIME B840M-A WIFI with certified memory and a compatible power supply. For AI applications, verify software compatibility with Ryzen 9000 CPUs and ensure sufficient cooling and power delivery.

Key Highlights
  • AMD Socket AM5 AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
  • PC micro ATX AMD B840 7.1 channels
  • DDR5-SDRAM 4 DIMM Maximum internal memory: 192 GB
  • HDD & SSD M.2, SATA III RAID support Number of storage drives supported: 7
  • BIOS type: UEFI AMI 256 Mbit
  • 2.5 Gigabit Ethernet Wi-Fi Wi-Fi 6E (802.11ax) Bluetooth 5.3
Specifications
12V power connector
Yes
1st M.2 highest PCI Express generation
4.0
1st M.2 largest key size
2280
2nd M.2 highest PCI Express generation
4.0
2nd M.2 largest key size
2280
3rd M.2 highest PCI Express generation
3.0
3rd M.2 largest key size
2280
Antenna included
Yes
ATX Power connector (24-pin)
Yes
Audio output channels
7.1 channels
BIOS memory size
256 Mbit
BIOS type
UEFI AMI
Bluetooth
Yes
Bluetooth version
5.3
Cables included
SATA
Compatible processor series
AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Component for
PC
CPU fan connector
Yes
Depth
244 mm
DisplayPorts quantity
2
DVI-D ports quantity
0
ECC сompatibility
ECC & Non-ECC
Ethernet interface type
2.5 Gigabit Ethernet
Ethernet LAN
Yes
Ethernet LAN (RJ-45) ports
1
Front panel audio connector
Yes
Front panel connector
Yes
HDMI ports quantity
1
Maximum internal memory
192 GB
Memory channels
Dual-channel
Memory slots type
DIMM
Motherboard chipset
AMD B840
Motherboard chipset family
AMD
Motherboard form factor
micro ATX
Number of chassis fan connectors
3
Number of COM connectors
1
Number of HDDs supported
4
Number of M.2 (M) slots
3
Number of memory slots
4
Number of SATA III connectors
4
Number of storage drives supported
7
Package depth
275 mm
Package height
67.5 mm
Package weight
1.52 kg
Package width
275 mm
Parallel processing technology support
Not supported
PCI Express x16 (Gen 3.x) slots
2
PCI Express x16 (Gen 4.x) slots
1
Processor manufacturer
AMD
Processor socket
Socket AM5
RAID levels
0, 1, 5, 10
RAID support
Yes
S/PDIF out connector
Yes
Screws included
Yes
Supported memory types
DDR5-SDRAM
Supported processor sockets
Socket AM5
Supported storage drive interfaces
M.2, SATA III
Supported storage drive types
HDD & SSD
Top Wi-Fi standard
Wi-Fi 6E (802.11ax)
TPM connector
Yes
Unbuffered memory
Yes
USB 2.0 connectors
2
USB 2.0 ports quantity
4
USB 3.2 Gen 1 (3.1 Gen 1) connectors
2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
0
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
1
USB 3.2 Gen 2 (3.1 Gen 2) connectors
0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
0
VGA (D-Sub) ports quantity
0
Wi-Fi
Yes
Wi-Fi standards
Wi-Fi 6E (802.11ax)
Width
244 mm
WiFi-AP antenna jack
1
Windows operating systems supported
Windows 10 x64, Windows 11

Manual

Open Manual

Leaflet

Open Leaflet
Price history over the last 6 months
Motherboard ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX
Current
R2,841
Lowest
R2,616
Highest
R2,936
Change 24H
+R201   +8%
Week
+R225   +9%
Month
+R221   +8%

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