ASRock B850 Pro-A WiFi Motherboard

The ASRock B850 Pro-A WiFi features the AMD B850 chipset with an AM5 socket, supporting AMD Ryzen 7000, 8000 and 9000 series processors and up to 256 GB of dual channel DDR5 memory across 4 slots with EXPO and XMP support. It includes one PCIe 5.0 x16 and one PCIe 4.0 x16 slot for graphics and expansion, plus four M.2 sockets and four SATA ports for fast storage options. Networking comprises 2.5 Gigabit LAN, Wi-Fi 6E and Bluetooth 5.2, and video outputs include HDMI 2.1 and USB-C with DisplayPort support for integrated graphics.

Warning: This product contains a button battery
- If swallowed, a lithium battery can cause severe or fatal injuries with 2 hours.
- Keep batteries out of reach of children.
- If you think batteries may have been swallowed or placed inside any of the body, seek immediate medical attention.

Features

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B850 Pro-A WiFi

Pro-A series is designed for enhanced stability, durability, and efficiency, it offers reliable performance, user-friendly features and a streamlined aesthetic, making it ideal for daily computing needs.

Optimised for stability, durability, and efficiency. It combines reliable performance, user-friendly features and streamlined style for daily computing tasks.

• Supports AMD Socket AM5 Ryzen™ 9000, 8000 and 7000 Series Processors
• 14+2+1 Phase Power Design, 80A Dr.MOS for VCore+SOC+MISC
• 4 x DDR5 DIMMs
• Supports Dual Channel, up to 8000+ (OC)
• 1 PCIe 5.0 x16, 1 PCIe 4.0 x16
• Graphics Output Options: 1 HDMI, 1 USB Type-C (DP-alt)
• Realtek ALC897 7.1 CH HD Audio Codec
• 1 Blazing M.2 (PCIe Gen5x4), 2 Hyper M.2 (PCIe Gen4x4), 1 Ultra M.2 (PCIe Gen3x4), 4 SATA3
• 1 USB 3.2 Gen2x2 Type-C (Front), 1 USB 3.2 Gen2 Type-C (Rear), 1 USB 3.2 Gen1 Type-C (Rear), 6 USB 3.2 Gen1 (4 Rear, 2 Front), 9 USB 2.0 (6 Rear, 3 Front)
• Realtek 2.5G LAN
• 802.11axe WiFi 6E +Bluetooth
• Supports BIOS Flashback

Overview

• 802.11axe Wi-Fi 6E
• BIOS Flashback Button
• HDMI Port
• USB 3.2 Gen1 Type-C (DP-alt Mode)
• 2.5Gbps LAN
• 2 x Addressable LED Headers
• Front USB 3.2 Gen2x2 Type-C
• 1 x Addressable LED Header
• 1 x RGB LED Header
• Enlarged VRM Heatsinks
• 1 x Chassis Fan Connector
  Smart Fan Speed Control
• Aluminium M.2 Heatsink
• 2 x CPU Fan Connectors
  Smart Fan Speed Control
• 1 x AIO Pump Connector
  Smart Fan Speed Control
• Enlarged Chipset Heatsink
• 3 x Chassis Fan Connectors
  Smart Fan Speed Control
• Hi-Density Power Connector
  2 x 8 pin 12V Power Connectors
• Supports AMD AMS Socket Ryzen™ Series Processors
• 1 x Blazing M.2 Socket (PCIe Gen5 x4)
• PCIe Gen5 x16 Slot
  SMT Technology
  Reinforced Steel Slot
• Premium Audio
  Realtek ALC897 7.1 CH HD Audio Codec
• Premium PCB
  8-Layer PCB
• 14 + 2 + 1 VRM Design
  80A Dr.MOS for VCore+SOC-MISC
• 4 x DIMMs DDRS
  Dual Channel
• 4 x SATA3 6Gbps
  2 x Hyper M.2 Sockets (PCIe Gen4 x4)
• 1 x Ultra M.2 Socket (PCIe Gen3 x4)

Performance

Optimised VRM Design

VRM Design

14+2+1 Power Phase Design

Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.

• 14 VCORE Phase - 80A Dr.MOS
• 2 SOC Phase - 80A Dr.MOS
• 1 VDD MISC Phase

Dr. MOS

Dr.MOS is the integrated power stage solution which is optimised for synchronous buck-set down voltage applications! Compared to traditional discrete MOSFETs, it intelligently delivers higher current for each phase, thus providing improved thermal result and superior performance.

Power Connector

Hi-Density Power Connector

CPU overclocking requires higher current. ASRock Hi-Density Power Connectors are designed to withstand higher currents compared to traditional CPU and ATX power connectors, providing a more stable system and reducing the risk of fire during heavy overclocking.

• 8+8 Pin HI-Density Power Connector

8 Layer PCB

The 8 Layer PCB provides stable signal traces and power shapes delivering lower temperature and higher energy efficiency for memory overclocking! Thus, it's able to support the latest memory modules with most extreme memory performance!

DDR5 XMP & EXPO Support

Derived from the “built for stable and reliable” designing concept, ASRock does not compromise on any details. This motherboard is built with high quality materials, enthusiasts are able to enjoy the boost of DDR5 memory overclocking performance by enabling the pre-tested profiles. Make sure the memory modules are Intel® XMP/AMD EXPO™ capable and overclocking can be made so affordable, satisfying and absolutely no sweat at all.

* There are certain risks involved with memory overclocking and may affect your system’s stability. Please realise that overclocking should be done at your own risk and expense. EXPO/XMP profile support may vary by different system configuration, memory modules and motherboard models. Please refer to Memory QVL for the completed support list.

High Speed M.2 Solution

PCIe Gen5 Blazing M.2

The Blazing M.2 accommodates the latest PCI Express 5.0 standard to perform twice the bandwidth compared to previous generation, with a breathtaking 128Gb/s transfer speed, it is ready to unleash the full potential of future ultrafast SSDs.

Hyper M.2 Gen4 x4

Supports PCI Express 4.0 M.2 SSDs, it is capable of perform twice the speed compared to previous 3rd generation, giving a lightning fast data transferring experience.

Cooling

Intelligent Cooling Design

Aluminium Heatsink

The first thing that catches the eye is the optimised Aluminium Heatsink Design. Heatsinks are crucial for efficient heat dissipation, especially during heavy workloads like gaming or productivity tasks. Motherboard that built with heatsinks can effectively manage thermal performance, hence ensure system stability and durability effortlessly.

PWM/DC Fan Support

ASRock fan headers automatically detect whether fans are running in DC