Motherboard ASRock B850M Pro-A WiFi micro ATX – AMD B850, Socket AM5, DDR5, 4x DIMM, 256GB, Wi‑Fi, 2.5Gb LAN

Optimized for stability, durability and efficiency, this ASRock motherboard combines reliable performance, user-friendly features and a streamlined style for daily computing tasks. The board implements an 8+2+1 power phase VRM design with Dr. MOS integrated power stages, Hi-Density CPU power connector and a 6-layer PCB to deliver smooth power delivery, improved thermal behavior and support for aggressive memory overclocking. It also supports DDR5 XMP and AMD EXPO profiles, multiple high-speed M.2 slots including a PCIe Gen5 Blazing M.2 and PCIe Gen4 Hyper M.2, plus onboard Wi‑Fi 6E and 2.5 Gb/s LAN for modern connectivity.

Advantages

The robust 8+2+1 VRM with Dr. MOS provides stable current to the CPU and better thermal performance compared with discrete MOSFET solutions. Hi‑Density power connectors increase reliability under high-current conditions such as CPU overclocking. A 6‑layer PCB enhances signal integrity and energy efficiency for memory overclocking. Native support for DDR5 XMP/EXPO enables easy activation of tested memory overclock profiles. High-speed storage options include a PCIe Gen5 M.2 for future ultrafast SSDs and PCIe Gen4 M.2 slots for current high-performance drives. Cooling features include optimized aluminum heatsinks, PWM/DC fan auto-detection and an intuitive fan-tuning utility. Connectivity is modern with Wi‑Fi 6E and Dragon 2.5 Gb/s LAN, while RGB headers and SignalRGB support provide customizable lighting. Practical features such as dual display outputs, reinforced PCIe slot and BIOS Flashback simplify building and maintenance.

Key specifications

• VRM: 8+2+1 power phase design with Dr. MOS
• Power connector: Hi‑Density CPU power connector
• PCB: 6-layer PCB
• Memory: DDR5 support with Intel XMP and AMD EXPO compatibility
• Storage: PCIe Gen5 Blazing M.2 and Hyper M.2 Gen4 x4 slots
• Cooling: Aluminum heatsinks; PWM/DC fan header support; Fan‑Tastic tuning utility
• Networking: Wi‑Fi 6E (802.11ax/e) and Dragon 2.5 Gb/s LAN
• RGB: Onboard RGB and addressable RGB headers; Polychrome RGB and SignalRGB support
• Graphics outputs: HDMI and DisplayPort
• Expansion slot: Reinforced steel PCIe slot (PCIe 5.0 compatible)
• Utilities: Auto driver installer (preinstalled LAN driver); BIOS Flashback (USB + power only)

How to use

Install the motherboard into a compatible chassis, connect the Hi‑Density CPU power connector and other required power cables, then mount CPU, cooler, memory modules and storage devices into the appropriate sockets and M.2 slots. Enable DDR5 XMP or AMD EXPO profiles in BIOS to apply pre‑tested memory overclock settings if the installed modules support them. Use the BIOS or ASRock A‑Tuning software to configure fan curves, leveraging PWM/DC auto‑detection and the Fan‑Tastic tuning feature for optimized cooling and acoustic balance. For network setup, enable Wi‑Fi 6E or connect via the Dragon 2.5 Gb/s LAN port. To update firmware without CPU or memory installed, use BIOS Flashback with a USB drive and power supply as instructed by the motherboard manual.

Recommendations

For stable overclocking and optimal performance, use compatible high-quality DDR5 memory modules that support Intel XMP or AMD EXPO, a capable CPU cooler matched to your workload, and a reliable high‑current PSU to take advantage of the Hi‑Density power connector and robust VRM design.