SKU: prime b840m-a wifi-csm
Availability: In Stock
Brand: ASUS
Category: Motherboards
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The ASUS PRIME B840M-A WIFI-CSM is a feature-rich micro-ATX motherboard tailored for AMD AM5 socket Ryzen desktop processors. Designed with robust 8+2+1 phase digital power delivery and a six-layer PCB, it ensures exceptional stability and thermal performance for demanding workloads.
Memory & Storage: Supports up to 192GB DDR5 across 4 DIMM slots, compatible with AMD EXPO and ASUS Enhanced Memory Profile (AEMP) for easy memory tuning and overclocking. It houses 3 M.2 slots—two PCIe 4.0 x4 and one PCIe 3.0 x4—and 4 SATA 6Gb/s ports for versatile, high-speed storage configurations.
Expansion & Connectivity: The board includes a PCIe 4.0 x16 SafeSlot Core+ slot for high-performance GPUs and two PCIe 3.0 x16 physical slots (operating at x1). Integrated Wi-Fi 6E (2x2), Bluetooth, and Realtek 2.5Gb Ethernet ensure top-tier network speeds. Rear I/O offers HDMI and DisplayPort outputs (dependent on CPU with integrated graphics), dual 10Gbps USB Type-A ports, and a 5Gbps USB Type-C front-panel header.
Build & Features: Designed for easy DIY with a pre-mounted I/O shield, BIOS FlashBack for BIOS updates without CPU installation, and ASUS Fan Xpert 2+ for comprehensive fan and cooling control. The motherboard supports addressable Gen 2 RGB headers, customizable via Aura Sync software.
Corporate Stable Model (CSM): As part of ASUS’s CSM program, it provides extended lifecycle and includes ASUS Control Center Express management software, ideal for business and enterprise deployments.
Elevate your AMD Ryzen build with reliable performance, future-proof connectivity, and intelligent features with the ASUS PRIME B840M-A WIFI-CSM motherboard.
| RGB Headers | Addressable Gen 2 RGB headers |
| BIOS Features | BIOS FlashBack (update without CPU) |
| Ethernet | Realtek 2.5 Gb Ethernet |
| Rear I/O Display Outputs | 1 x HDMI,1 x DisplayPort (requires CPU with integrated graphics) |
| Power Phases | 8+2+1 digital power design |
| Integrated WiFi | Wi-Fi 6E (2x2) |
| USB Ports | USB 10Gbps Type-A (rear),1 x 5Gbps USB Type-C (front panel) |
| memory_type | DDR5 |
| memory_type | DDR5 |
| SATA Ports | 4 x SATA 6Gb\/s |
| SATA Ports | 4 |
| M.2 Slots | 3 (2 x PCIe 4.0 x4,1 x PCIe 3.0 x4 depending on CPU/chipset) |
| PCIe Slots | 1 x PCIe 4.0 x16 SafeSlot Core+,PCIe 3.0 x16 (x1 mode) |
| PCIe Slots | PCIe 4.0 x16 SafeSlot Core+,PCIe 3.0 x16 (x1) |
| M.2 Slots | 3 |
| Memory Slots | 4 x DIMM |
| Max Memory Speed | Support for AMD EXPO and ASUS AEMP profiles |
| Max Memory Capacity | 192GB |
| Memory Channels | channel |
| Memory Slots | 4 |
| max_memory_gb | 192 |
| Form Factor | Micro ATX |
| Form Factor | Micro ATX |
| Socket | AMD AM5 |
| CPU Socket | AM5 |
| Power Connectors | 8+2+1 digital power design |
| bios_flash | BIOS FlashBack (update without CPU) |
| Display Outputs | HDMI,DisplayPort |
| wi_fi | Wi-Fi 6E (2x2) |
| Bluetooth | Yes |
| LAN | Realtek 2.5 Gb Ethernet |
| Chipset | AMD B840 |
| Manufacturer | ASUS |
| Model | ASUS PRIME B840M-A WIFI-CSM (AM5) |
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