MSI Pro B850M-A WiFi AM5 DDR5 Motherboard AMD B850 Chipset Dual M.2, Wi‑Fi 7 & Bluetooth 5.4 | 911-7E66-002
- MSI PRO B850M‑A WIFI microATX motherboard, model 911‑7E66‑002
- Supports AMD Ryzen™ 7000/8000/9000 Series processors on AM5 socket
- AMD B850 chipset with PCIe 5.0 support
- 4 DDR5 memory slots up to 256 GB and 8200+ MT/s OC
- 2 × PCIe M.2 storage slots plus 4 SATA 6 Gb/s ports
- Built‑in Wi‑Fi 7 with Bluetooth 5.4 and 5 Gb LAN
- HDMI 2.1 and DisplayPort 1.4 outputs (with supported APU)
| Chipset | AMD B850 |
| CPU Support | AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors |
| Socket | AM5 |
| Memory Slots | 4 × DDR5 UDIMM, up to 256 GB |
| Supported Speeds |
DDR5 8200–5600 (OC) / 5600–4800 (JEDEC) Ryzen™ 9000 Series Max OC: • 1DPC 1R: up to 8200+ MT/s • 1DPC 2R: up to 6400+ MT/s • 2DPC 1R: up to 6400+ MT/s • 2DPC 2R: up to 6000+ MT/s |
| Memory Features | Supports AMD POR/JEDEC speeds, Dual-channel, AMD EXPO™, Overclocking, Non-ECC, Unbuffered, CUDIMM (Clock Driver bypass mode only) |
| Onboard Graphics | 1 × HDMI™ 2.1 (4K 60Hz), 1 × DisplayPort 1.4 (4K 60Hz) |
| Slots |
2 × PCI-E x16 1 × PCI-E x1 PCI_E1: PCIe 5.0 x16 (CPU) PCI_E2: PCIe 3.0 x1 (Chipset) PCI_E3: PCIe 4.0 x4 (Chipset) PCI_E1 Slot Details: • PCIe 5.0 x16 (Ryzen™ 9000/7000) • PCIe 4.0 x8 (Ryzen™ 8700/8600/8400) • PCIe 4.0 x4 (Ryzen™ 8500/8300) |
| Audio | Realtek® ALC897, 7.1-Channel HD Audio |
| Storage |
2 × M.2 (2280/2260) • M2_1 (CPU): PCIe 5.0 x4 (Ryzen™ 9000/7000) / PCIe 4.0 x4 (Ryzen™ 8000) • M2_2 (CPU): PCIe 4.0 x4 / x2 (Ryzen™ 8500/8300) 4 × SATA 6G ports RAID Support: RAID 0/1/10 for SATA, RAID 0/1 for M.2 NVMe |
| USB Ports |
Front: 4 × USB 2.0, 2 × USB 5Gbps Type-A, 1 × USB 10Gbps Type-C Rear: 3 × USB 5Gbps Type-A, 3 × USB 10Gbps Type-A, 2 × USB 10Gbps Type-C |
| LAN | Realtek® 8126VB 5G LAN |
| Connectors |
1 × 24-pin ATX_PWR 2 × 8-pin CPU_PWR 1 × PCIe_PWR (8-pin) 1 × CPU Fan 1 × Combo Fan (Pump/Sys Fan) 3 × System Fans 2 × Front Panel (JFP) 1 × Chassis Intrusion (JCI) 1 × Front Audio (JAUD) |
The MSI PRO B850M‑A WiFi is a feature‑rich Micro‑ATX motherboard designed for users building high‑performance AMD systems with the latest technologies. Based on the AMD B850 chipset and using the AM5 socket, it offers support for the current and next generations of AMD Ryzen desktop processors, making it a future‑ready foundation for gaming, content creation, and everyday computing.
Memory and Performance
This motherboard supports DDR5 memory across four DIMM slots, enabling high‑speed RAM configurations in dual‑channel mode. With support for large memory capacities, it delivers responsive system performance, faster multitasking, and smoother operation in memory‑intensive applications.
Storage and Expansion
The board includes two M.2 slots for ultra‑fast NVMe SSD storage. One slot is capable of PCIe 5.0 x4 speeds with compatible CPUs, while the other supports PCIe 4.0 x4 performance, enabling fast boot times and rapid access to games, media, and large files. Additional SATA ports provide support for traditional storage drives.
PCIe and Graphics Support
A PCIe 5.0 x16 slot provides support for the latest graphics cards, giving gamers and creators the bandwidth needed for high‑resolution gaming and graphics workloads. Additional PCIe slots are available for expansion cards and other upgrades.
Networking and Wireless Connectivity
Built‑in Wi‑Fi 7 delivers high‑speed wireless connectivity with improved bandwidth and reduced latency, ideal for online gaming, streaming, and data transfers. Bluetooth 5.4 enables reliable wireless pairing for peripherals such as headsets, keyboards, and mice. Wired networking is also supported, offering stable network performance for demanding use.
Rear I/O and Peripheral Support
The rear I/O panel offers a comprehensive set of USB Type‑A and Type‑C ports for peripherals, external storage, and accessories. Display outputs such as HDMI and DisplayPort are included for systems using processors with integrated graphics, making the motherboard versatile for a range of builds.
Audio and System Features
Onboard high‑definition audio provides clear sound for gaming, movies, and music. The board also includes headers for system fans and RGB lighting control, allowing users to customize cooling performance and visual aesthetics.
Customer Reviews
No reviews yet. Be the first to review this product!





