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ASUS Prime B840M-A WiFi Micro-ATX Motherboard (AM5, DDR5, WiFi 6E) | 90MB1J20-M0EAY0

SKU: N/A
Model Number: N/A
  • AMD B840 chipset with AM5 socket for Ryzen 9000 series processors
  • 4× DDR5 dual-channel slots with EXPO & AEMP support
  • 3× M.2 slots (2× PCIe 4.0, 1× PCIe 3.0) + 4× SATA III
  • PCIe 4.0 x16 SafeSlot + PCIe 3.0 x16 (x1) expansion
  • USB 3.2 Gen 1 / Gen 2 / USB 2.0 front & rear connectivity
  • Wi-Fi 6E, Bluetooth & 2.5Gb Ethernet for high-speed networking
  • EZ DIY features: Q-Latch, Q-LED Core, PCIe Quick Release lever
  • Pre-mounted I/O shield for easier building
15% Off

Original price was: 787.50 AED.Current price is: 670.00 AED.

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15% Off

Original price was: 787.50 AED.Current price is: 670.00 AED.

Expected Delivery N/A
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Product Overview

The ASUS Prime B840M-A WiFi is engineered to deliver stable, efficient, and future-ready performance for AMD Ryzen 9000 series processors. Built on the AMD B840 chipset, it offers robust power delivery, advanced cooling controls, and intuitive tuning options—ideal for gaming, productivity, or creator builds. Its compact micro-ATX design makes it perfect for modern systems without sacrificing features or expansion capabilities.

Optimized Power Design for AM5 CPUs

With an 8 + 2 + 1 power stage architecture, the motherboard ensures consistent voltage delivery even under heavy workloads. High-side and low-side MOSFETs are paired for efficiency and thermal stability, enabling better performance for current and future Ryzen processors.

High-Speed DDR5 Memory Support

Featuring ASUS Enhanced Memory Profile (AEMP) and AMD EXPO support, the board automatically optimizes DDR5 performance for higher speeds and lower latency. Advanced UEFI settings allow enthusiasts to fine-tune memory behavior beyond standard profiles.

Fast Storage With Triple M.2 Slots

Three onboard M.2 slots give users flexible storage options:

  • 2× PCIe 4.0 M.2 slots for ultra-fast NVMe SSDs
  • 1× PCIe 3.0 M.2 slot for additional storage

This setup ensures rapid boot times, fast application loading, and efficient multi-drive setups.

EZ DIY Features for Beginner-Friendly Builds

ASUS has built the B840M-A WiFi with convenience in mind:

  • PCIe Quick Release lever allows effortless GPU removal
  • Q-Latch enables tool-free M.2 installation
  • Q-LED Core provides diagnostic indicators during system startup

These features make assembly, troubleshooting, and upgrades significantly easier for first-time and experienced builders.

Modern Connectivity & Reliable Networking

The motherboard includes Wi-Fi 6E and Bluetooth for fast wireless connectivity, while a 2.5Gb Ethernet port provides ultra-low-latency wired networking for gaming or workstations. Multiple USB ports—including USB 3.2 Gen 2—ensure compatibility with a wide range of peripherals.

Buy Now – Powerful, Compact AM5 Motherboard for Modern Builds

Choose the ASUS Prime B840M-A WiFi for a dependable, feature-rich foundation for your next AM5 system. Perfect for gamers, creators, or anyone building a high-performance, space-efficient PC.

Socket AMD AM5 (Ryzen 9000/8000/7000 series)
Chipset AMD B840 Chipset
Memory Size 256 GB
Memory Slots 4× DDR5 DIMM Slots
Graphics * Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
** Supports 4K@60Hz as specified in HDMI 2.1.
** Supports max. 8K@30Hz as specified in DisplayPort 1.4.
1 x HDMI™ port
2 x DisplayPort
Expansion Slots 1 x PCIe 4.0 x16 slot (supports x16 mode)
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
2 x PCIe 3.0 x16 slots (support x1 mode)
M.2 Slots 3x
SATA 6Gb/s ports 4x
Ethernet 1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
WiFi Wi-Fi 6E 2×2 Wi-Fi 6E (802.11ax)
Frequency Band Supports 2.4/5/6GHz
Bluetooth v5.3
USB 1 x USB 5Gbps connector (supports USB Type-C®)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
1 x USB 5Gbps port (1 x USB Type-C®)
2 x USB 10Gbps ports (2 x Type-A)
2 x USB 2.0 headers support 4 additional USB 2.0 ports
4 x USB 2.0 ports (4 x Type-A)
USB Type-C® power delivery output: max. 5V/3A
Audio – Audio Shielding
– Dedicated audio PCB layers
– Premium audio capacitors
– Supports up to 24-Bit/192 kHz playback
– Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Realtek 7.1 Surround Sound High Definition Audio CODEC*
Back Panel I/O Ports 1 x BIOS FlashBack™ button
1 x HDMI™ port
1 x Realtek 2.5Gb Ethernet port
1 x USB 5Gbps port (1 x USB Type-C®)
1 x Wi-Fi Module
2 x DisplayPort
2 x USB 10Gbps ports (2 x Type-A)
3 x Audio jacks
4 x USB 2.0 ports (4 x Type-A)
Fan and Cooling 1 x 4-pin AIO Pump header
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
3 x 4-pin Chassis Fan headers
Power 1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
Miscellaneous 1 x 10-1 pin Front Panel System header
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x S/PDIF Out header
1 x SPI TPM header (14-1 pin)
3 x Addressable Gen 2 headers
BIOS 256 Mb Flash ROM, UEFI AMI BIOS
Operating System Windows® 10 64-bit
Windows® 11
Form Factor micro-ATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)

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