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Asus PRIME B840M-A WIFI M-ATX Gaming Motherboard
AMD AM5 Socket
ASUS Q-Design and EZ PC DIY
ASUS Enhanced Memory Profile (AEMP)
Aura Sync RGB Lighting


Description
Introducing the Asus PRIME B840M-A WIFI M-ATX Gaming Motherboard. A modern, feature-packed platform designed to unlock the full performance potential of AMD Ryzen 9000, 8000, and 7000 Series desktop processors. Built on the powerful AMD B840 chipset, this Micro-ATX motherboard delivers the ideal combination of performance, connectivity, and expandability for gamers, content creators, PC enthusiasts, and professionals alike. With support for advanced AI workloads and next-generation hardware, it provides a future-ready foundation for high-performance desktop systems. At the heart of the PRIME B840M-A WIFI is a robust 8+2+1 phase power design featuring discrete MOSFETs, ensuring stable and efficient power delivery to modern AMD Ryzen processors. This advanced power architecture helps maintain system stability under demanding workloads such as gaming, streaming, content creation, and multitasking. Combined with ASUS' intelligent performance optimization tools and AI-focused design philosophy, the motherboard is built to handle both today's applications and the increasingly demanding workloads of tomorrow.
The motherboard fully embraces next-generation memory technology with support for up to 256GB of DDR5 memory across four DIMM slots. Memory speeds of up to 7600+ MT/s (OC) allow users to take advantage of exceptional bandwidth and responsiveness for performance-critical applications. Support for AMD EXPO and ASUS Enhanced Memory Profile (AEMP) simplifies memory tuning and overclocking, while comprehensive controls within the UEFI BIOS provide enthusiasts with extensive customization options to optimize performance according to their specific needs. Storage performance is equally impressive, featuring three M.2 slots that support high-speed NVMe solid-state drives. Two of the slots utilize PCIe 4.0 technology for ultra-fast storage performance, while an additional PCIe 3.0 M.2 slot provides further expansion flexibility. These storage options enable faster boot times, rapid application loading, and improved overall system responsiveness. Four SATA 6Gb/s ports are also available for users who require additional storage capacity for traditional SSDs and hard drives.
For networking and connectivity, the PRIME B840M-A WIFI offers a comprehensive suite of modern technologies. Integrated Wi-Fi 6E delivers high-speed wireless networking across the 2.4GHz, 5GHz, and 6GHz frequency bands, providing improved bandwidth, reduced latency, and enhanced performance in crowded wireless environments. Complementing the wireless connectivity is Realtek 2.5Gb Ethernet with ASUS LANGuard protection, offering fast and reliable wired network performance for gaming, streaming, file transfers, and professional applications. The motherboard includes a versatile range of connectivity options for modern peripherals and accessories. Rear-panel connectivity features USB 10Gbps Type-A ports, USB 5Gbps Type-C, and additional USB 2.0 ports, while front-panel headers provide support for additional USB 5Gbps and USB Type-C connections. These options ensure broad compatibility with external storage devices, gaming peripherals, productivity tools, and other high-speed accessories.
Multimedia capabilities are well catered for through integrated HDMI and dual DisplayPort outputs, providing flexible display connectivity for systems using compatible Ryzen processors with integrated graphics. Audio performance is powered by a Realtek 7.1 Surround Sound High Definition Audio CODEC, delivering clear and immersive sound for gaming, media consumption, streaming, and communication. To maintain reliable performance under sustained workloads, ASUS has equipped the PRIME B840M-A WIFI with comprehensive thermal management features. A dedicated VRM heatsink, passive chipset heatsink, hybrid fan headers, and an integrated AiO pump header work together to ensure effective cooling and stable operation. These cooling technologies help prevent thermal throttling while supporting efficient airflow management throughout the system.
ASUS has also incorporated several user-friendly innovations to simplify the building experience. Features such as Q-Antenna, Q-LED Core, and ASUS EZ PC DIY technologies make installation, troubleshooting, and system customization easier for both experienced builders and first-time PC enthusiasts. In addition, Aura Sync RGB lighting support with onboard Addressable Gen 2 headers and Aura RGB headers allows users to synchronize lighting effects across compatible components for a fully personalized system aesthetic. With its powerful AMD AM5 platform support, advanced DDR5 memory capabilities, Wi-Fi 6E connectivity, PCIe 4.0 storage support, comprehensive cooling solutions, and extensive customization options, the ASUS PRIME B840M-A WIFI M-ATX Gaming Motherboard delivers an exceptional balance of performance, reliability, and future-proof technology for modern desktop PC builds.
Features
- AMD AM5 Socket
- ASUS Q-Design and EZ PC DIY
- ASUS Enhanced Memory Profile (AEMP)
- Aura Sync RGB Lighting
- VRM heatsink, Passive chipset heatsink, hybrid fan headers and AiO pump header
- Wi-Fi 6E, M.2 PCIe 4.0, Realtek 2.5Gb Ethernet, USB 3.2 Gen 2 ports, front USB 3.2 Gen 1 Type-C
Specifications
| Brand | Asus |
| Socket | AM5 |
| CPU | Supports AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors |
| Chipset | AMD B840 Chipset |
| DDR5 Memory | Support DDR5 up to 7600+MT/s (OC) with Ryzen 9000 & 8000 & 7000 Series Processors, ECC and Non-ECC, Un-buffered Memory, supports AMD Extended Profiles for Overclocking (EXPO), supports ASUS Enhanced Memory Profile (AEMP) |
| Memory Channel | Dual |
| DIMM Slots | 4 |
| Max Memory (GB) | 256 |
| PCI-E 4.0 x16 | 1 |
| PCI-E 3.0 x16 | 2 |
| SATA 6G | 4 |
| M.2 Slot | 3 |
| LAN | Realtek 2.5Gb Ethernet, ASUS LANGuard |
| Wireless and Bluetooth | Wi-Fi 6E, 2x2 Wi-Fi 6E (802.11ax), Supports 2.4/5/6GHz frequency band, Bluetooth v5.3 |
| USB Ports Rear | 2 x USB 10Gbps ports (2 x Type-A) |
| 1 x USB 5Gbps port (1 x USB Type-C) | |
| 4 x USB 2.0 ports (4 x Type-A) | |
| USB Ports Front | 1 x USB 5Gbps connector (supports USB Type-C) |
| 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports | |
| 2 x USB 2.0 headers support 4 additional USB 2.0 ports | |
| Audio ports (Rear) | Realtek 7.1 Surround Sound High Definition Audio CODEC |
| HDMI | 1 |
| DisplayPort | 2 |
| DirectX | 12 |
| Form Factor | M-ATX |
| Operating System | Support for Windows 11, Windows 10 64-bit |
| Weight | 1424 g |
Package Contents
- 1x Asus PRIME B840M-A WIFI M-ATX Gaming Motherboard - Black
- 2x SATA 6Gb/s Cables
- 1x Asus Wi-Fi Q-Antenna
- 1x M.2 Rubber Package
- 2x Screw Packaging for M.2 SSD
- 1x Quick Start Guide
| Free Shipping | No |
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