General Information for Asus Motherboards
ASUS PRIME B840M-A WIFI, AMD, Socket AM5, AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series, Socket AM5, DDR5-SDRAM, 192 GB
PRIME B840M-A WIFI
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors.
The PRIME B840M-A WIFI motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
- AMD B840 (AM5 Socket) micro-ATX motherboard
- Advanced AI PC-ready
- DDR5
- PCIe 4.0 Ready
- Three M.2 slots
- Wi-Fi 6E
- Q-Antenna
- Realtek 2.5Gb Ethernet
- Dual DisplayPort
- HDMI™
- rear and front USB 5Gbps Type-C®
- BIOS FlashBack™
- Aura Sync
AI Solutions
- AI Advisor - ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.
Digital Power Design
PRIME B840M-A WIFI features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.
- Six-layer PCB design - Enhanced stability and overclocking.
- Power Saving - Optimize power with CPU, lighting, and fan settings.
- Digi+ VRM control - Real-time voltage control.
Enhanced Memory & Storage Performance
- Enhanced DDR5 performance - Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B840M-A WIFI maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits. For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance.
- Three M.2 slots (up to 64 Gbps) - PRIME B840M-A WIFI offers a total of three M.2 slots, including two that support data-transfer speeds of up to 64 Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables quicker boot-up and app load times with OS or application drives.
Cooler by design
The PRIME B840M-A WIFI motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.
- ASUS Fan Xpert 2+ - ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.
- Cooler compatibility - ASUS AIO coolers offer robust performance, high overclocking potential, bold aesthetics and customizable functionality for new motherboards, empowering you to build your dream gaming rig.
Empowering connections
This motherboard offers a versatile range of connectivity, including support for WiFi 6E, PCIe 4.0 slot and an arsenal of USB ports which includes Type-C® connections.
- WiFi 6E - Built-in WiFi 6E5 technology takes advantage of the newly available radio spectrum in the 6 GHz band. With triple the bandwidth of the 2.4/5/6 GHz band, WiFi 6E delivers ultrafast wireless networking speeds with improved capacity and better performance in dense wireless environments.
- Realtek 2.5 Gb Ethernet - Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.
- Front USB 5Gbps Type-C® - This motherboard features a USB 5Gbps Type-C® front panel connector for speedy data transfers of up to 5Gbps.
Personalization
The PRIME B840M-A WIFI enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.
- UEFI BIOS - The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.
- ASUS GlideX - Enable seamless screen sharing and control across PCs, tablets, and smartphones via wired or wireless connections, supporting multiple platforms.
- ASUS DriverHub - Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.
- Armoury Crate - Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.
- Aura Sync - Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.
- Addressable Gen 2 RGB headers - Three addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.
DIY friendly
The PRIME B840M-A WIFI motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.
- Q-Antenna - With Q-Antenna, attaching a WiFi antenna to your PC is now easy and fast. Instead of slowly rotating two fasteners until they finally lock in, they just snap into place. Less hassle, and more consistent performance.
- Q-LED Core - The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.
- Pre-Mounted I/O Shield - Our pre-installed I/O shield safeguards ports, simplifies the build process, increases functionality and enhances aesthetics for PC DIY enthusiasts.
- BIOS FlashBack™ - BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack™ port, and press a button - no CPU or memory needed.
- SafeSlot Core+ - SafeSlot Core+ is a one-piece stainless-steel brace that shields the slot to protect it from damage. The metal cover is tightly secured to the slot with hooks, and the entire assembly is firmly anchored to the PCB with strengthened solder points to provide a secure foundation for heavyweight graphics cards.
Build for the most advanced pc for gaming and creating
When only the fastest will do, ASUS motherboards deliver. With faster dual-channel DDR5 memory support, AMD EXPO™ technology and PCIe® 4.0 support for both graphics and NVMe, you can play the most demanding games and deliver your biggest projects with the revolutionary performance of an ASUS motherboard and AMD Ryzen™ 9000, 8000, and 7000 Series processors.
PRIME B840M-A WIFI
Further details for this product, PRIME B840M-A WIFI, can be found at the manufacturer website. Please note, these web addresse(s) are supplied by 3rd parties, Quzo UK is not responsible for the content.
AMD B840 Chipset, 4 x DIMM slots, max. 192GB, DDR5, 3 x M.2 slots and 4 x SATA 6Gb/s ports
ASUS PRIME B840M-A WIFI. Processor manufacturer: AMD, Processor socket: Socket AM5, Compatible processor series: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series. Supported memory types: DDR5-SDRAM, Maximum internal memory: 192 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, SATA III, Supported storage drive types: HDD & SSD, RAID levels: 0, 1, 5, 10. Ethernet interface type: 2.5 Gigabit Ethernet, Top Wi-Fi standard: Wi-Fi 6E (802.11ax), Wi-Fi standards:
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ASUS PRIME B840M-A WIFI AMD B840 Socket AM5 micro ATX 90MB1J20-M0EAY0 Specifications
Product Type
Motherboards
Brand
ASUS
Collection Model Asus PRIME B840M-A WIFI
Manufacturer Product Type
Asus Motherboards
Manufacturer Product Type
AMD Motherboards
Form Factor Micro ATX
Product colour Multicoloured
Product Family PRIME B840M-A WIFI
Processor socket
Socket AM5
Processor manufacturer
AMD
Motherboard chipset AMD B840
Parallel processing technology support Not supported
Supported memory types DDR5-SDRAM
Number of memory slots 4
Maximum internal memory 192 GB
Memory slots type DIMM
ECC ompatibility ECC & Non-ECC
Unbuffered memory Yes
Number of storage drives supported 7
RAID support Yes
Supported storage drive types HDD & SSD
Supported storage drive interfaces M.2, SATA III
RAID levels 0, 1, 5, 10
Number of HDDs supported 4
Wi-Fi Yes
Ethernet LAN Yes
Top Wi-Fi standard Wi-Fi 6E (802.11ax)
Ethernet interface type 2.5 Gigabit Ethernet
Bluetooth Yes
Wi-Fi standards Wi-Fi 6E (802.11ax)
Bluetooth Version 5.3
Bluetooth v5.3
HDMI ports quantity 1
Ethernet LAN (RJ-45) ports 1
DisplayPorts quantity 2
DVI-D ports quantity 0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity 0
USB 2.0 ports quantity 4
Number of SATA III connectors 4
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity 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
VGA (D-Sub) ports quantity 0
PCI Express x16 (Gen 3.x) slots 2
PCI Express x16 (Gen 4.x) slots 1
Number of M.2 (M) slots 3
1st M.2 largest key size 2280
1st M.2 highest PCI Express generation 4.0
2nd M.2 largest key size 2280
2nd M.2 highest PCI Express generation 4.0
3rd M.2 largest key size 2280
3rd M.2 highest PCI Express generation 3.0
Windows operating systems supported Windows 10 x64, Windows 11
Width 244 mm
Depth 244 mm
Net Weight 0.93Kg
USB 2.0 connectors 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors 2
USB 3.2 Gen 2 (3.1 Gen 2) connectors 0
S/PDIF out connector Yes
Front panel audio connector Yes
Front panel connector Yes
ATX Power connector (24-pin) Yes
CPU fan connector Yes
Number of chassis fan connectors 3
Number of COM connectors 1
12V power connector Yes
TPM connector Yes
Front panel audio connector 1
WiFi-AP antenna jack 1
Compatible processor series AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor sockets Socket AM5
Audio output channels 7.1 channels
BIOS type UEFI AMI
BIOS memory size 256 Mbit
Component for PC
Motherboard chipset family AMD
Memory channels Dual-channel
Wireless Technology 2x2 Wi-Fi 6E (802.11ax)Supports 2.4/5/6GHz frequency band
Gross weight 1.44Kg
Features RGB Lighting
Antenna included Yes
Package width 275 mm
Package depth 275 mm
Package height 67.5 mm
Package weight 1.52 kg
Package length 27.5cm
Package width 27.5cm
Package Type NA
Package height 6.75cm
Screws included Yes
Motherboard form factor Micro ATX
Chipset AMD B840
Web Address www.asus.com
RAM Slots 4 x 288-pin
Back HDMI Port(s) 1
Back DisplayPort(s) 1
24-pin ATX Power 1
8-pin ATX Power 1
USB 2.0 Header(s) 2
COM Port Header(s) 1
TPM Header(s) 1
Product Width 244mm
PCI Express 4.0 x16 1
Back LAN Port(s) 1
Back Audio Jack(s) 3
Back USB 2.0 Port(s) 4
PCI Express 3.0 x16 2
RAID Raid 0/1/5/10
S/PDIF Out Header(s) 1
RAM Technology DDR5 (Dual Channel)
On-Board Audio Realtek 7.1 Surround Sound High Definition Audio CODEC
Product Length 244mm
Wireless NIC Wi-Fi 6E
Back Other Port(s) 1 x Wi-Fi Module
M.2 Socket(s) 2 x PCIe Gen 4.0 x41 x PCIe Gen 3.0 x4
S-ATA 6Gb/s Port(s) 4
CPU Interface Socket AM5
Back Button(s) 1 x BIOS FlashBack
BIOS 256 Mb Flash ROM, UEFI AMI BIOS
RAM Speeds Up to DDR5 7600 (O.C.)
Max. Memory Support 192GB
On-Board Video Processor with integrated graphics is required
USB 5Gbps Header(s) 2
Back USB 10Gbps Port(s) Type-A 2
Internal Other Port(s) 3 x Addressable Gen 2 headers
Back USB 5Gbps Port(s) Type-A 1
LAN Speed 1 x Realtek 2.5Gb EthernetASUS LANGuard
Model Number PRIME B840M-A WIFI
Keywords MotherboardAM5B840DDR5Wi-Fi 6E
MPN 90MB1J20-M0EAY0
Video Inputs DisplayPort