ASUS PRIME B840M-A WIFI AM5 Micro ATX Motherboard
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ASUS
90MB1J20-M0EAY0
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ASUS PRIME B840M-A WIFI AM5 Micro ATX Motherboard
A compact AM5 motherboard for practical Ryzen builds, with DDR5 memory support, three M.2 slots, Wi-Fi 6E, Bluetooth 5.3 and 2.5GbE networking.
AMD AM5B840 ChipsetDDR5Wi-Fi 6E
The ASUS PRIME B840M-A WIFI is a Micro ATX motherboard for AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series desktop processors. It is a practical choice for compact office, home and productivity PCs where DDR5 memory, multiple M.2 storage slots, built-in Wi-Fi 6E, Bluetooth 5.3 and 2.5GbE wired networking are more important than premium PCIe 5.0 or enthusiast chipset features.
Compatibility Note: Please confirm CPU support, BIOS version, DDR5 memory QVL, case size and cooler clearance before purchase. B840 is a more entry-level AM5 chipset, so check expansion and PCIe requirements carefully before building.
Best For
✓ Compact AM5 desktop builds
✓ Office and home productivity PCs
✓ DDR5 Ryzen upgrade systems
✓ Wi-Fi 6E and 2.5GbE connectivity
Key Features
Compact AM5 Platform
Supports AMD Ryzen 9000, 8000 and 7000 Series desktop processors, giving mainstream systems a modern AM5 foundation in a Micro ATX size.
DDR5 and Triple M.2 Storage
Four DDR5 DIMM slots and three M.2 slots provide a responsive base for productivity PCs, office systems and everyday performance builds.
Built-In Network Connectivity
Wi-Fi 6E, Bluetooth 5.3 and 2.5Gb Ethernet offer flexible wireless and wired networking without requiring an additional adapter.
Practical PRIME Design
ASUS PRIME styling, Aura Sync support and mainstream expansion make it suitable for clean, practical desktop builds.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
Choose this model if you want a compact and cost-effective AM5 motherboard with DDR5, Wi-Fi 6E, 2.5GbE LAN and triple M.2 storage. If you need PCIe 5.0 graphics, Gen5 M.2 or a stronger gaming platform, move up to a B850 or X870 motherboard.
Buyer’s Guide
Buy it if
You are building a compact AM5 PC and want DDR5, Wi-Fi 6E, 2.5GbE LAN, three M.2 slots and Micro ATX sizing.
Skip it if
You need PCIe 5.0 graphics, Gen5 M.2 storage, USB4 rear connectivity or a more gaming-focused motherboard platform.
Also consider
Consider an ASUS B850M motherboard for PCIe 5.0 support, or an X870 board if USB4 and higher-end connectivity are required.
Features - ASUS - 90MB1J20-M0EAY0
CPU Socket
- Socket AM5
More Details
Product Code
04:517413
EAN Code
4711387797143
Manufacturer
ASUS