ASUS Prime B840M-A WiFi-CSM AM5 Micro-ATX DDR5 192 GB Motherboard
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Description
The ASUS Prime B840M-A WiFi-CSM is a Micro-ATX motherboard for AM5. It supports DDR5 memory up to 7600 MT/s (OC).
- ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards.
- Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
- AMD AM5 Socket: Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
- Enhanced Power Solution: 6-layer PCB, alloy chokes and durable capacitors for stable power delivery
- Ultrafast Connectivity: Wi-Fi 6E, PCIe 4.0 x16 slot, PCIe 4.0 M.2 slots, Realtek 2.5Gb Ethernet, rear USB 10Gbps Type-A ports, rear and front USB 5Gbps Type-C support
- Comprehensive Cooling: VRM and M.2 heatsinks, PCH heatsink, hybrid fan headers and Fan Xpert 2+
- DIY Friendly Design: Pre-mounted I/O shield, BIOS FlashBack, M.2 heatsink, Q-Antenna, Q-Dashboard, Q-LED Core
- Unmatched Personalization: Three Addressable Gen 2 headers, all configurable with ASUS-exclusive Aura Sync RGB lighting
- Renowned Software: Armoury Crate, ASUS DriverHub, ASUS GlideX, ASUS MyHotkey
Specifications
| Manufacturer | ASUS |
|---|---|
| Model Number | PRIME B840M-A WIFI-CSM 90MB1J20-MVAAYC |
| Launch Date | January 2025 |
| CPU Socket | AM5 |
| Chipset Model | Intel B840 |
| Board Size / Form Factor | Micro-ATX |
| Supported Memory Type | DDR5 |
| DIMM Slots | 4 |
| Maximum RAM Capacity | 192 GB |
| Valid DDR4 Speeds | DDR5-4400 / DDR5-7600 (OC) |
| ECC Memory Support | No |
| Expansion Slots (PCIe) | 3 × PCIe x16 |
| PCIe x16 (Qty) | 3 |
| PCIe x4 (Qty) | 0 |
| PCIe x1 (Qty) | 0 |
| M.2 Slot Count | 3 × M.2 |
| M.2 Device Compatibility | 2280 - M Key, 2242 / 2260 / 2280 - M Key, 2280 - M Key |
| SATA III Ports | 4 × SATA 6Gbps |
| SATA Express Ports | 0 |
| Wired Networking (LAN) | |
| Onboard Wi-Fi | Yes |
| Wi-Fi Standard | 6E (802.11ax, 6 GHz) |
| Rear-Panel USB | USB 3.2 Gen2, USB 3.2 Gen1, USB 2.0 |
| Internal USB 3.2 Gen 2x2 Headers | 0 |
| Internal USB 3.2 Gen 2 Headers | 1 |
| Internal USB 3.2 Gen 1 Headers | 1 |
| Internal USB 2.0 Headers | 2 |
| NVIDIA SLI | No |
| AMD CrossFire | No |
| RAID Capability | Yes |
| Back-Connect Layout | No |
| Manufacturer Part Number (MPN) | PRIME B840M-A WIFI-CSM |
| SKU Code | PRIME B840M-A WIFI-CSM |
| GTIN / EAN | 197105797154 |
Price History (last 12 months)
Plots available price points within the past 12 months.
