Key Features
- Micro ATX Form Factor
- AMD B840 Chipset
- Socket AM5
- DDR5 (Max: 256GB / 4 slots)
- 3 x M.2 & 15 x USB & 4 x SATA
- HDMI
Shipping & Delivery
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Standard Delivery
Our courier will deliver to the specified address
5-7 Working Days
From £4.99
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Express Delivery
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From £9.99
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Asus PRIME B840M-A WIFI Micro ATX Motherboard for AMD AM5 CPUs
£163.88 Original price was: £163.88.£151.74Current price is: £151.74. INC VAT
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Key Features
- Micro ATX Form Factor
- AMD B840 Chipset
- Socket AM5
- DDR5 (Max: 256GB / 4 slots)
- 3 x M.2 & 15 x USB & 4 x SATA
- HDMI
Shipping & Delivery
-
Standard Delivery
Our courier will deliver to the specified address
5-7 Working Days
From £4.99
-
Express Delivery
DHL courier will deliver to the specified address
2-3 Working Days
From £9.99
-
Free 30-Day returns
Description
ASUS PRIME B840M-A WIFI Powerful AI Micro-ATX Engineered for Ryzen 9000

Next-Gen Performance in Compact Form
The ASUS PRIME B840M-A WIFI brings the power of AMD Ryzenâ„¢ 9000 Series processors to a compact micro-ATX platform, combining efficient power delivery, AI optimization, and superior build quality. Equipped with an 8+2+1 power phase design and six-layer PCB, it ensures stable performance for multitasking, gaming, or creative workloads. With support for DDR5 memory up to 7600+ MT/s, this board is ready for both everyday users and enthusiasts demanding high-end responsiveness.

Cutting-Edge Connectivity and Expansion
Connectivity on the PRIME B840M-A WIFI is built for speed and versatility, featuring built-in Wi-Fi 6E and Bluetooth 5.3 for wireless freedom, as well as Realtek 2.5Gb Ethernet for low-latency wired networking. It houses three ultra-fast M.2 slots, multiple PCIe lanes including a reinforced PCIe 4.0 x16 slot, and USB 5Gbps Type-C ports on both the front and rear I/O. For integrated graphics, you get support for both HDMI and dual DisplayPort—ideal for productivity setups.

DIY Features with Intelligent Controls
This board makes building and managing your system easier than ever with ASUS-exclusive DIY features like Q-Antenna, Q-LED Core, and a pre-mounted I/O shield. AI Advisor intelligently assists with system tuning, while Fan Xpert 2+ ensures quiet, optimized cooling. A trio of Gen 2 addressable RGB headers enables stunning lighting setups via ASUS Aura Sync, and BIOS FlashBack™ allows easy firmware updates—no CPU required.
| Motherboard Type | Desktop |
|---|---|
| Form Factor | Micro ATX |
| Socket | AMD AM5 |
| Chipset | AMD B840 |
| DDR Type | DDR5 (Dual Channel, ECC/Non-ECC) |
| RAM Slots | 4 x DIMM, up to 256GB |
| RAM Speeds | Up to 7600+ MT/s (OC) |
| Integrated Graphics | Depends on CPU |
| Graphics Outputs | 1 x HDMI, 2 x Display Port |
| PCIe Slots | Ryzen 9000/7000: 1 x PCIe 4.0 x16 Ryzen 8000: 1 x PCIe 4.0 x16 (x8/x4) Chipset: 2 x PCIe 3.0 x16 (x1) |
| Storage | 4 x SATA III 3 x M.2: – M.2_1 (PCIe 4.0 x4) – M.2_2 (PCIe 4.0 x4) – M.2_3 (PCIe 3.0 x4) |
| Wireless | Wi-Fi 6E + Bluetooth 5.3 |
| LAN | Realtek 2.5Gb Ethernet |
| Audio | Realtek 7.1 Surround Sound |
| Rear USB Ports | 2 x USB 10Gbps Type-A 1 x USB 5Gbps Type-C 4 x USB 2.0 |
| Front USB Ports | 1 x USB 5Gbps Type-C 2 x USB 5Gbps 4 x USB 2.0 |
| Internal Headers | 1 x USB 5Gbps Type-C 1 x USB 5Gbps 2 x USB 2.0 3 x Addressable Gen2 3 x M.2 (Key M) 4 x SATA 6Gb/s |
| Cooling Headers | 1 x 4-pin CPU Fan 1 x 4-pin CPU OPT Fan 1 x 4-pin AIO Pump 3 x 4-pin Chassis Fan |
| Other I/O | Clear CMOS, COM Port, Front Audio, S/PDIF Out, TPM Header, Front Panel Header |
| Accessories | 2 x SATA cables 1 x WiFi Q-Antenna 3 x M.2 Screw Packs Quick Start Guide |
| Package Type | Retail |
| Weight | 1.52 kg |
| Warranty | 3 Years |
