Asus Prime B840M A Wifi Motherboard

Asus Prime B840M A Wifi Motherboard

Step into the modern AMD AM5 platform with the reliable and feature-rich Prime B840M-A WIFI motherboard. Designed for AMD Ryzen™ 9000, 8000, and 7000 series processors, this micro-ATX board utilizes the new **AMD B840 chipset**. It offers a balanced blend of current technologies, including support for high-speed **DDR5 memory** (up to 256GB and 7600+ MT/s OC). Furthermore, it features fast networking with **2.5Gb Ethernet** and onboard **Wi-Fi 6E**. Consequently, it’s an excellent choice for building a capable and future-ready mainstream PC.

Discover Modern AM5 Essentials & Connectivity

The Prime B840M-A WIFI provides a solid foundation for the latest AMD processors. To begin with, its ASUS 5X Protection III features ensure durability and stable operation. It supports high-bandwidth **DDR5 RAM**, leveraging AMD EXPO™ and ASUS AEMP profiles for optimized performance. The primary expansion slot is a robust **PCIe 4.0 x16 SafeSlot Core+**, ready for modern graphics cards. Storage options are also quite flexible for a micro-ATX board.

Specifically, it includes **three M.2 slots**. Two of these support fast **PCIe 4.0 x4** NVMe SSDs, while the third runs at PCIe 3.0 x4 speeds. Four standard SATA 6Gb/s ports are also available. Additionally, networking is well-covered with both a fast **Realtek 2.5Gb Ethernet** port and integrated **Wi-Fi 6E** plus Bluetooth 5.3. For users utilizing integrated graphics, the board offers versatile display outputs with **two DisplayPort 1.4** and one HDMI 2.1 port. Furthermore, ASUS Q-Design features like Q-Antenna, Q-DIMM, and Q-LED Core simplify the building process, while BIOS FlashBack™ allows for easy firmware updates. Addressable Gen 2 headers are also included for Aura Sync RGB lighting.

Specifications

• CPU Socket: AMD AM5 (Supports Ryzen™ 9000/8000/7000 Series)
• Chipset: AMD B840
• Form Factor: micro-ATX (24.4 cm x 24.4 cm)
• Memory: 4 x DIMM, Max. 256GB, DDR5 7600+(OC) – 4800 MHz, ECC & Non-ECC
• Expansion Slots: 1 x PCIe 4.0 x16 (CPU dependent mode), 2 x PCIe 3.0 x16 (x1 mode)
• Storage: 2 x M.2 PCIe 4.0 x4, 1 x M.2 PCIe 3.0 x4, 4 x SATA 6Gb/s ports
• Networking: Realtek 2.5Gb Ethernet, Wi-Fi 6E (802.11ax), Bluetooth 5.3
• Video Outputs: 2 x DisplayPort 1.4, 1 x HDMI™ 2.1
• Rear USB: 2x USB 10Gbps (Type-A), 1x USB 5Gbps (Type-C®), 4x USB 2.0 (Type-A)
• Front USB: 1x USB 5Gbps (Type-C®) connector, 1x USB 5Gbps header (2 ports), 2x USB 2.0 headers (4 ports)
• Audio: Realtek 7.1 Surround Sound High Definition Audio CODEC
• Special Features: B840 Chipset, DDR5 Support (up to 256GB), PCIe 4.0 x16, Triple M.2 Slots (2x PCIe 4.0), 2.5Gb LAN, Wi-Fi 6E, BIOS FlashBack™, Q-Antenna, Addressable Gen 2 Headers (Aura Sync)

Q&A

Who is the Prime B840M-A WIFI for?

This motherboard is designed for users building mainstream PCs with the latest AMD Ryzen™ processors (AM5 socket). It’s suitable for home users, office applications, and gamers looking for a reliable micro-ATX board with modern features like DDR5, PCIe 4.0, fast networking (2.5Gb + Wi-Fi 6E), and good storage options without needing PCIe 5.0 capabilities.

Why choose the Prime B840M-A WIFI?

Its key strengths lie in providing access to the modern **AM5 platform** and **DDR5 memory** with the new B840 chipset at a potentially more accessible price point than B650/X670. It offers excellent connectivity with **2.5Gb Ethernet** and **Wi-Fi 6E**, flexible storage with **triple M.2 slots** (two PCIe 4.0), and user-friendly features like **BIOS FlashBack™** and **Q-Antenna**.

What are the Pros?

Pros: Modern AM5 platform with B840 chipset; Supports high-speed DDR5 (up to 256GB); PCIe 4.0 x16 slot; Triple M.2 slots (2x PCIe 4.0); Fast 2.5Gb LAN and integrated Wi-Fi 6E; Good selection of USB ports; Triple display outputs; BIOS FlashBack™ and Q-Antenna.

What are the Cons?

Cons: No PCIe 5.0 support for graphics or M.2 slots; Third M.2 slot is PCIe 3.0; Basic audio codec; Limited number of high-speed rear USB ports compared to higher-end boards.

Verdict

The Prime B840M-A WIFI offers a solid entry into the AMD AM5 ecosystem, leveraging the new B840 chipset to provide essential modern features in a micro-ATX format. With support for high-speed **DDR5 memory**, a **PCIe 4.0 x16** slot, **triple M.2 drives**, and excellent networking including **2.5Gb LAN and Wi-Fi 6E**, it covers the bases for a capable mainstream build. While it omits PCIe 5.0, it delivers a well-rounded feature set focused on current high-performance standards. Therefore, if you’re building an AM5 system and prioritize strong connectivity and storage options over PCIe 5.0, this motherboard is a practical and modern choice. Find complete specifications on the official ASUS product page.