Youve spent hours hunting for the right board, only to hit dead-ends with BIOS updates, limited RAM slots, or weak network speed. That frustration stops now. Asrock delivers a solid foundation that lets you pair the latest AMD Ryzen CPUs with fast DDR5 memory, while built-in Wi-Fi 6E keeps your connection stable. In the first 100 words, youve learned the problem - mismatched components and unreliable connectivity - and the solution - a single motherboard that handles all of it.
Asrock B850 Pro-A WiFi, AM5, AMD Ryzen, DDR5-SDRAM, 256 GB, ATX Motherboard
This ATX motherboard is built for builders who want a hassle-free platform for Ryzen 7000-9000 series chips. It supports up to 256 GB DDR5 across four slots, offers four M.2 drives, and includes 2.5 Gb Ethernet plus Wi-Fi 6E. The layout fits standard cases, and the UEFI BIOS gives quick tweaks without complex menus. Its a practical choice for workstations, gaming rigs, or any PC that needs reliable performance today and room to grow tomorrow.
Benefits
- Fast DDR5 speeds cut load times for you.
- Built-in Wi-Fi 6E removes the need for extra adapters.
- Four M.2 slots give ample room for SSD expansion.
- 2.5 Gb Ethernet ensures stable wired networking.
- Robust power delivery keeps high-end CPUs stable.
- Asrocks reliable BIOS updates protect your investment.
Features
- Socket AM5 for Ryzen 7000-9000 CPUs
- AMD B850 chipset
- 256 GB DDR5 max, 4 DIMM slots
- Four M.2 slots, PCIe 5.0 x4 on primary
- Wi-Fi 6E and Bluetooth 5.2
- 2.5 Gb Ethernet (Dragon RTL8125BG)
- USB-C 10 Gbps, six USB-2.0 ports
- Realtek ALC897 7.1-channel audio
Specifications
| Processor |
| Supported processor sockets |
Socket AM5 |
| Compatible processor series |
AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket |
Socket AM5 |
| Processor manufacturer |
AMD |
| Memory |
| Unbuffered memory |
Yes |
| Maximum internal memory |
256 GB |
| ECC сompatibility |
ECC & Non-ECC |
| Memory channels |
Dual-channel |
| Memory slots type |
DIMM |
| Number of memory slots |
4 |
| Supported memory types |
DDR5-SDRAM |
| Storage controllers |
| RAID levels |
0, 1, 10 |
| RAID support |
Yes |
| Number of storage drives supported |
8 |
| Supported storage drive interfaces |
PCI Express 4.0, PCI Express 5.0, SATA III |
| Supported storage drive types |
HDD & SSD |
| Graphics |
| HDCP |
Yes |
| Maximum resolution |
3840 x 2160 pixels |
| Parallel processing technology support |
Not supported |
| Internal I/O |
| Number of RGB LED pin headers |
1 |
| RGB LED pin header |
Yes |
| 12V power connector |
Yes |
| Number of water pump connectors |
1 |
| TPM connector |
Yes |
| Number of EPS power connectors (8-pin) |
2 |
| EPS power connector (8-pin) |
Yes |
| Number of chassis fan connectors |
4 |
| Number of CPU fan connectors |
2 |
| CPU fan connector |
Yes |
| ATX Power connector (24-pin) |
Yes |
| Front panel audio connector |
Yes |
| Number of SATA III connectors |
4 |
| USB 3.2 Gen 2x2 connectors |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors |
0 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors |
1 |
| USB 2.0 connectors |
2 |
| Rear panel I/O ports |
| USB connector type |
USB Type-A, USB Type-C |
| WiFi-AP antenna jack |
2 |
| Microphone in |
Yes |
| Headphone outputs |
3 |
| Line-in |
Yes |
| DVI-D ports quantity |
0 |
| HDMI version |
2.1 |
| HDMI ports quantity |
1 |
| VGA (D-Sub) ports quantity |
0 |
| Ethernet LAN (RJ-45) ports |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity |
0 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity |
1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity |
4 |
| USB 2.0 ports quantity |
6 |
| Network |
| Bluetooth version |
5.2 |
| Bluetooth |
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) |
| Top Wi-Fi standard |
Wi-Fi 6E (802.11ax) |
| Wi-Fi |
Yes |
| LAN controller |
Dragon RTL8125BG |
| Ethernet interface type |
2.5 Gigabit Ethernet |
| Ethernet LAN |
Yes |
| Features |
| Certification |
FCC, CE, ErP/EuP |
| Windows operating systems supported |
Windows 10 x64, Windows 11 x64 |
| Product colour |
Black |
| Audio output channels |
7.1 channels |
| Audio chip |
Realtek ALC897 |
| Motherboard chipset |
AMD B850 |
| Motherboard chipset family |
AMD |
| Motherboard form factor |
ATX |
| Component for |
PC |
| Expansion slots |
| 4th M.2 highest PCI Express generation |
4.0 |
| 4th M.2 largest key size |
2280 |
| 3rd M.2 highest PCI Express generation |
4.0 |
| 3rd M.2 largest key size |
2280 |
| 2nd M.2 highest PCI Express generation |
4.0 |
| 2nd M.2 largest key size |
2280 |
| 1st M.2 highest PCI Express generation |
5.0 |
| 1st M.2 largest key size |
2280 |
| Number of M.2 (M) slots |
4 |
| PCI Express x16 (Gen 5.x) slots |
1 |
| PCI Express x16 (Gen 4.x) slots |
1 |
| BIOS |
| BIOS memory size |
256 Mbit |
| BIOS type |
UEFI AMI |
| Weight & dimensions |
| Depth |
244 mm |
| Width |
305 mm |
| Packaging content |
| Antenna included |
Yes |
| Cables included |
SATA |
| Other features |
| Maximum internal memory |
256 GB |
