Asrock B850M Pro-A WiFi AM5 micro ATX motherboard
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About This Item
- 3 M.2 slots for PCIe 4.0/5.0 and SATA III SSDs
- AMD B850 chipset with Socket AM5 for Ryzen 7000/8000/9000 CPUs
- 4 DIMM slots supporting up to 256 GB DDR5 memory
- 2.5 Gb Ethernet and Wi-Fi 6E for high-speed connectivity
- micro ATX form factor with 7.1 audio and 4 SATA III ports
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ASRock B850M Pro-A WiFi | AMD B850 micro ATX Motherboard
The ASRock B850M Pro-A WiFi is a micro ATX motherboard built for AMD Ryzen 5000, 8000, and 9000 series processors on the Socket AM5 platform. With PCIe 5.0 support, Wi-Fi 6E, and robust VRM design, it delivers reliable performance for gaming, content creation, and everyday computing.
Quick Specs
| Metric | Spec |
|---|---|
| Form Factor | micro ATX |
| Socket | AM5 |
| Memory Support | DDR5, up to 256 GB |
| M.2 Slots | 3 (one PCIe 5.0, two PCIe 4.0) |
| Wi-Fi | Wi-Fi 6E + Bluetooth 5.2 |
| LAN | 2.5 Gb/s Ethernet |
Built for Ryzen with PCIe 5.0 M.2
The B850M Pro-A WiFi supports the latest AMD Ryzen 7000, 8000, and 9000 series CPUs via Socket AM5. Its PCIe 5.0 M.2 slot offers up to 128 GB/s bandwidth, future-proofing your system for next-gen NVMe SSDs. Two additional M.2 slots provide flexible storage expansion with PCIe 4.0 speeds.
Optimized VRM for Stable Performance
Equipped with an 8+2+1 power phase design and Dr. MOS technology, this motherboard delivers smooth, efficient power to the CPU. The 6-layer PCB and Hi-Density Power Connectors improve signal integrity and reduce heat, ensuring stable operation during demanding tasks or overclocking.
Advanced Cooling and Quiet Operation
An aluminum heatsink design helps manage heat during heavy workloads. ASRock’s Fan-Tastic Tuning automatically detects fan types and allows precise control over speed curves. PWM/DC fan support ensures quieter performance while maintaining optimal cooling.
High-Speed Connectivity
With Wi-Fi 6E and Bluetooth 5.2, you get faster wireless speeds and lower latency. The 2.5 Gb/s LAN port offers up to 2.5× faster wired networking than standard Gigabit Ethernet. Multiple USB ports—including USB 3.2 Gen 2 Type-C—provide fast data transfer and device connectivity.
Customizable RGB Lighting
POLYCHROME RGB and SignalRGB support let you personalize your build with synchronized lighting effects across compatible devices. Onboard and addressable RGB headers make it easy to integrate LED strips, fans, and other accessories.
Box Contents
- ASRock B850M Pro-A WiFi motherboard
- SATA cables
- Wi-Fi antennas
- User manual and driver CD
Check before you buy
- Confirm your CPU is compatible with Socket AM5 (Ryzen 5000/8000/9000 series).
- Verify your case supports micro ATX motherboards (244 mm × 244 mm).
- Ensure your PSU has the required 24-pin ATX and 8-pin EPS connectors.
- Check that your DDR5 memory modules are on the QVL list for best stability.
Frequently Asked Questions
Q: Does this motherboard support DDR4 memory?
A: No, it only supports DDR5-SDRAM memory modules.
Q: Can I use this board with an older Ryzen CPU?
A: No, it requires an AM5-compatible Ryzen 7000, 8000, or 9000 series processor.
Q: How many M.2 SSDs can I install?
A: You can install up to three M.2 SSDs—one PCIe 5.0 and two PCIe 4.0.
Q: Is Wi-Fi 6E included?
A: Yes, it features Wi-Fi 6E (802.11ax) with dual antennas for extended coverage.
Q: Does it support RAID?
A: Yes, it supports RAID 0, 1, and 10 configurations.
The Consultant’s verdict & warranty
The ASRock B850M Pro-A WiFi is an excellent choice for users building a compact yet powerful AMD AM5 system. With PCIe 5.0 storage, robust VRM, and modern connectivity, it balances performance and value for gaming and productivity. Covered by the standard Manufacturer Warranty.
| Internal I/O | |
|---|---|
| Number of M.2 (M) slots | 3 |
| 12V power connector | Yes |
| Supported storage drive interfaces | PCI Express 4.0, PCI Express 5.0, SATA III |
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 3 |
| TPM connector | Yes |
| Number of SATA III connectors | 4 |
| Number of chassis fan connectors | 3 |
| Front panel audio connector | Yes |
| EPS power connector (8-pin) | Yes |
| CPU fan connector | Yes |
| ATX Power connector (24-pin) | Yes |
| RGB LED pin header | Yes |
| Number of CPU fan connectors | 2 |
| Number of EPS power connectors (8-pin) | 1 |
| Number of RGB LED pin headers | 1 |
| Technical details | |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B850 |
| Supported processor sockets | Socket AM5 |
| Parallel processing technology support | Not supported |
| HDMI version | 2.1 |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Audio | |
| Audio output channels | 7.1 channels |
| Performance | |
| Supported storage drive types | HDD & SSD |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B850 |
| RAID levels | 0, 1, 10 |
| Supported processor sockets | Socket AM5 |
| Certification | FCC, CE, ErP/EuP |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Processor | |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Supported processor sockets | Socket AM5 |
| Processor socket | Socket AM5 |
| Memory | |
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Supported memory types | DDR5-SDRAM |
| Memory channels | Dual-channel |
| Maximum internal memory | 256 GB |
| Unbuffered memory | Yes |
| ECC сompatibility | ECC & Non-ECC |
| Storage controllers | |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | PCI Express 4.0, PCI Express 5.0, SATA III |
| RAID levels | 0, 1, 10 |
| Number of storage drives supported | 7 |
| RAID support | Yes |
| Graphics | |
| Parallel processing technology support | Not supported |
| Maximum resolution | 3840 x 2160 pixels |
| HDCP | Yes |
| Rear panel I/O ports | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| DisplayPort version | 1.4 |
| USB connector type | USB Type-A, USB Type-C |
| USB 2.0 ports quantity | 4 |
| WiFi-AP antenna jack | 2 |
| Microphone in | Yes |
| Headphone outputs | 3 |
| HDMI version | 2.1 |
| HDMI ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| DisplayPorts quantity | 1 |
| Line-in | Yes |
| Network | |
| Ethernet LAN | Yes |
| Wi-Fi | Yes |
| Wi-Fi standards | 802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax) |
| LAN controller | Dragon RTL8125BG |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Bluetooth | Yes |
| Bluetooth version | 5.2 |
| Top Wi-Fi standard | Wi-Fi 6E (802.11ax) |
| Features | |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B850 |
| Supported processor sockets | Socket AM5 |
| Certification | FCC, CE, ErP/EuP |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Audio chip | Realtek ALC897 |
| Product colour | Black |
| Expansion slots | |
| Number of M.2 (M) slots | 3 |
| PCI Express x16 (Gen 5.x) slots | 1 |
| PCI Express x4 (Gen 4.x) slots | 1 |
| 1st M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 5.0 |
| 2nd M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| 3rd M.2 largest key size | 2280 |
| 3rd M.2 highest PCI Express generation | 4.0 |
| BIOS | |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Video | |
| Maximum resolution | 3840 x 2160 pixels |
| HDCP | Yes |
| Certificates | |
| Certification | FCC, CE, ErP/EuP |
| Software | |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Weight & dimensions | |
| Width | 244 mm |
| Depth | 244 mm |
| Packaging content | |
| Cables included | SATA |
| Antenna included | Yes |
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