ASUS PRIME B840M-A WIFI – AI-Ready micro-ATX Motherboard for Ryzen 9000 Series
Built to power AMD Ryzen™ 9000 processors, the ASUS PRIME B840M-A WIFI brings AI-enhanced performance and robust connectivity in a DIY-friendly micro-ATX form factor. Designed for advanced productivity, AI workloads, and next-gen PC builds.
Key Features
- AMD B840 chipset (AM5 socket), micro-ATX form factor
- AI Advisor for intelligent system management
- 8+2+1 phase power design, six-layer PCB
- Supports DDR5 (up to 7600+ MT/s OC, 256GB)
- Three M.2 slots (PCIe 4.0 & 3.0)
- PCIe 4.0 x16 slot for graphics
- Wi-Fi 6E, Bluetooth 5.3, Realtek 2.5Gb LAN
- HDMI + Dual DisplayPort
- Front & rear USB 5Gbps Type-C®
- Fan Xpert 2+ with Extreme Quiet Mode
- Addressable Gen 2 RGB headers & Aura Sync
- Pre-mounted I/O shield, BIOS FlashBack™, Q-Antenna
AI & Performance
- AI Advisor: Easy access to advanced motherboard functions
- Digi+ VRM: Precise voltage regulation and real-time monitoring
- Power Saving Modes: Fine-tuned for CPU, lighting, and fans
Memory & Storage
- DDR5 Support: AEMP profiles for optimized performance, even without EXPO™
- 3x M.2 Slots: Two PCIe 4.0 x4 + one PCIe 3.0 x4 for fast boot/app load times
- RAID: RAID 0/1/5/10 via AMD RAIDXpert2
Cooling & Compatibility
- Fan Xpert 2+: Auto-Tuning & Extreme Quiet modes
- Cooler Compatibility: Supports ASUS AIO coolers for optimized performance
Connectivity
- Wi-Fi 6E: Triple-band with higher capacity and reduced interference
- 2.5Gb LAN: Low latency and high throughput
- USB Type-C®: Front and rear panel 5Gbps ports
Customization & Tools
- UEFI BIOS: Advanced configuration for both novice and expert users
- Armoury Crate & Aura Sync: RGB control and device management
- GlideX & DriverHub: Multi-device control and auto driver updates
- 3x Gen 2 Addressable RGB headers
DIY Friendly
- Q-Antenna & Q-LED Core: Quick Wi-Fi setup and POST diagnostics
- Pre-mounted I/O Shield: Simplified installation with added protection
- SafeSlot Core+: Reinforced PCIe slot for heavy GPUs
- BIOS FlashBack™: Update BIOS without CPU or RAM
Specifications
| 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 DisplayPort |
| 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 |
