Asrock B850 Pro-A AMD B850 AM5 ATX
£122.06 inc VAT
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About This Item
- AMD B850 chipset with Socket AM5 for AMD Ryzen 7000/8000/9000 series CPUs
- Supports up to 256 GB DDR5-SDRAM across 4 DIMM slots with ECC compatibility
- 4 M.2 slots with PCIe 5.0, 4.0, and 3.0 support for high-speed storage
- 7.1 channel audio with Realtek ALC897 codec and 2.5Gb Ethernet via Dragon RTL8125BG
- ATX form factor with 8-layer PCB design for enhanced durability and overclocking
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ASRock B850 Pro-A | AMD B850 ATX Motherboard
The ASRock B850 Pro-A AMD B850 Socket AM5 ATX motherboard delivers a robust foundation for AMD Ryzen 7000, 8000, and 9000 Series processors. Built around the AMD B850 chipset, it offers PCIe 5.0 support, DDR5 memory compatibility, and comprehensive cooling options for stable performance in gaming and productivity systems.
Quick Specs
| Metric | Spec. |
|---|---|
| Socket | AM5 |
| Memory | DDR5, up to 256 GB |
| PCIe Slots | 1 x PCIe 5.0, 1 x PCIe 4.0 |
| M.2 Slots | 4 (PCIe 5.0/4.0/3.0) |
| LAN | 2.5 Gb/s Ethernet |
| USB Ports | 6 x USB 2.0, 5 x USB 3.2 Gen 1, 2 x USB 3.2 Gen 2 |
| Audio | 7.1 CH, Realtek ALC897 |
| Form Factor | ATX (305 x 244 mm) |
Performance That Scales with Your Needs
The 14+2+1 power phase design with Dr. MOS technology ensures clean, stable power delivery to your CPU, even under heavy overclocking loads. The 8-layer PCB reduces electrical noise and heat, while Hi-Density Power Connectors provide extra durability for high-current scenarios. This design supports extreme DDR5 memory speeds when paired with XMP/EXPO profiles, giving you headroom for future upgrades.
Storage Versatility for Fast Data Access
With four M.2 slots supporting PCIe 5.0, 4.0, and 3.0, you can install multiple high-speed NVMe SSDs for rapid boot times and file transfers. The board also includes four SATA III ports for additional HDD or SSD storage, and supports RAID 0, 1, and 10 configurations for data protection or performance striping.
Cooling Solutions for Sustained Performance
An aluminum heatsink array covers critical VRM and M.2 areas to dissipate heat effectively during intensive tasks. PWM/DC fan headers auto-detect fan types, and the Fan-Tastic Tuning utility lets you customise curves for quiet operation or maximum cooling. A dedicated water pump header supports all-in-one liquid cooling setups.
Connectivity for Modern Builds
Dragon RTL8125BG 2.5 Gb/s LAN delivers faster, more reliable wired networking than standard gigabit Ethernet. Front-panel USB 3.2 Gen 2×2 Type-C offers up to 20 Gbps transfer speeds, while USB Type-C with DisplayPort Alt Mode enables single-cable monitor connections. No built-in Wi-Fi is included, so plan accordingly.
Box Contents
- ASRock B850 Pro-A motherboard
- SATA cables (quantity not specified)
- Screws (quantity not specified)
Check before you buy
- Confirm your CPU is compatible with AM5 socket (Ryzen 7000/8000/9000 Series).
- Verify you have a suitable ATX case and ATX 24-pin + 8-pin EPS power supply.
- Check if you need additional Wi-Fi adapters (none included).
- Ensure DDR5 memory modules are installed in the correct slots for dual-channel operation.
Frequently Asked Questions
Q: Does this motherboard support DDR4 memory?
A: No, it only supports DDR5-SDRAM modules.
Q: How many GPUs can I install?
A: One GPU in the PCIe 5.0 x16 slot; the second PCIe 4.0 slot is available for other expansion cards.
Q: Is there built-in Wi-Fi?
A: No, this board does not include Wi-Fi; you’ll need a separate adapter.
Q: Can I overclock with this board?
A: Yes, the 14+2+1 VRM design and BIOS support overclocking for compatible CPUs and DDR5 memory.
The Consultant’s Verdict & Warranty
The ASRock B850 Pro-A is a well-rounded ATX motherboard for AMD AM5 systems, offering strong power delivery, fast storage options, and comprehensive cooling. It suits gamers, content creators, and PC builders seeking a stable platform for high-performance Ryzen CPUs. Covered by the standard Manufacturer Warranty.
| Internal I/O | |
|---|---|
| Number of M.2 (M) slots | 4 |
| 12V power connector | Yes |
| Supported storage drive interfaces | PCI Express 3.0, 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 | 1 |
| TPM connector | Yes |
| Number of SATA III connectors | 4 |
| Number of chassis fan connectors | 4 |
| 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 |
| USB 3.2 Gen 2x2 connectors | 1 |
| Number of CPU fan connectors | 2 |
| Number of EPS power connectors (8-pin) | 2 |
| Number of water pump connectors | 1 |
| Number of RGB LED pin headers | 4 |
| 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 | 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 | 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 3.0, PCI Express 4.0, PCI Express 5.0, SATA III |
| RAID levels | 0, 1, 10 |
| Number of storage drives supported | 8 |
| 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 | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| USB connector type | USB Type-A, USB Type-C |
| USB 2.0 ports quantity | 6 |
| Microphone in | Yes |
| Headphone outputs | 3 |
| HDMI version | 2.1 |
| HDMI ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| Line-in | Yes |
| Network | |
| Ethernet LAN | Yes |
| Wi-Fi | No |
| LAN controller | Dragon RTL8125BG |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| 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 | ATX |
| Component for | PC |
| Audio chip | Realtek ALC897 |
| Product colour | Black |
| Expansion slots | |
| Number of M.2 (M) slots | 4 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 5.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 |
| 4th M.2 largest key size | 2280 |
| 4th M.2 highest PCI Express generation | 3.0 |
| 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 | 305 mm |
| Depth | 244 mm |
| Packaging content | |
| Cables included | SATA |
| Screws included | Yes |
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