Asrock B850M Pro RS micro ATX Motherboard - B850, AM5
The Asrock B850M Pro RS motherboard is designed for AMD Socket AM5 Ryzen™ 9000, 8000 and 7000 Seri...The Asrock B850M Pro RS motherboard is designed for AMD Socket AM5 Ryzen™ 9000, 8000 and 7000 Series Processors. It features an 8+2+1 Phase Power Design with Dr.MOS for VCore+SOC+MISC, and supports 4 x DDR5 DIMMs with Dual Channel up to 8000+(OC). The board includes 1 PCIe 5.0 x16 slot and 1 PCIe 4.0 x4 slot for graphics. For display outputs, it offers 1 HDMI and 1 DisplayPort. Audio is handled by the Realtek ALC897 7.1 CH HD Audio Codec with Nahimic Audio support. Storage options include 1 Blazing M.2 (PCIe Gen5x4), 2 Hyper M.2 (PCIe Gen4x4), and 4 SATA3 ports. Connectivity includes 1 USB 3.2 Gen2 Type-C (Rear), 1 USB 3.2 Gen2 Type-A (Rear), 1 USB 3.2 Gen1 Type-C (Front), 6 USB 3.2 Gen1 (2 Rear, 4 Front), 8 USB 2.0 (4 Rear, 4 Front), and a Realtek 2.5G LAN port. The motherboard also supports M.2 Bottom Heatsink and BIOS Flashback. Key features include an optimized VRM design, Dr.MOS for efficient power delivery, Hi-Density Power Connectors for stable overclocking, a 6 Layer PCB for stable signals and memory overclocking, DDR5 XMP & EXPO support, high-speed M.2 solutions (PCIe Gen5 and Gen4), DIY-friendly design with M.2 heatsinks, and intelligent cooling with PWM/DC fan support and Fan-Tastic Tuning. Connectivity is enhanced with Dragon 2.5 Gb/s LAN and Nahimic Audio for an immersive listening experience. It also supports POLYCHROME RGB and SignalRGB for customizable lighting. The motherboard offers dual graphics outputs (HDMI 2.1 and DisplayPort 1.4), a reinforced steel slot for PCIe 5.0, and EZ Setting features like pre-installed LAN drivers and BIOS Flashback. The pre-installed IO Shield simplifies installation. The motherboard chipset is AMD B850 and it is a micro ATX form factor.
This guide is for PC builders and enthusiasts looking to maximize the performance and features of the Asrock B850M Pro RS motherboard. The board offers robust performance, thanks to its support for the latest AMD Ryzen processors and high-speed storage options, including PCIe Gen5. However, note that proper cooling and careful component selection are crucial for optimal performance and system stability. This guide will cover key features, usage scenarios, setup instructions, and troubleshooting tips to help you get the most out of your Asrock B850M Pro RS.
All features
Model Part Number
90-MXBR6-A0UAYZ
Brand
Asrock
Extended Product Information
FAQs
What kind of CPU cooler should I use?
A CPU cooler that is compatible with the Socket AM5 is required. Consider a cooler with sufficient thermal design power (TDP) for your CPU and any overclocking plans.
How do I update the BIOS?
You can update the BIOS using the BIOS Flashback feature or through the BIOS setup utility. Download the latest BIOS file from the Asrock website and follow the instructions.
How many fans can I connect to this motherboard?
The motherboard has multiple fan headers, including CPU fan connectors and chassis fan connectors. Check the specifications for the exact number.
Does this motherboard support XMP/EXPO?
Yes, it supports DDR5 XMP and EXPO profiles for easy memory overclocking. Enable the profile in the BIOS settings.
What is the M.2 Bottom Heatsink?
The M.2 Bottom Heatsink is designed to dissipate heat from the M.2 SSD, which helps improve performance and maintain system stability.
What is Nahimic Audio?
Nahimic Audio is a software solution that enhances the audio experience by providing virtual surround sound, noise cancellation, and other audio-enhancing features. It can be used with headphones, headsets, or external speakers.
Where can I download the drivers for this motherboard?
You can download the drivers from the Asrock website. Go to the support section and search for your motherboard model.
Troubleshooting
Computer won't boot.
Check all power connections, reseat the CPU and RAM, and ensure the graphics card is properly installed. Try clearing the CMOS by removing the battery or using the BIOS Flashback feature.
System is unstable or crashes.
Check temperatures of CPU and GPU, reduce overclock settings, ensure your power supply has enough wattage, and update the BIOS.
No display output.
Make sure the monitor cable is connected to the graphics card, not the motherboard. Ensure the graphics card is properly seated, and try a different display cable.
Network connection issues.
Install the latest LAN drivers, check the network cable connection, and ensure your router is functioning correctly.
Pros and Cons
Pros
Supports the latest AMD Ryzen processors, offering excellent performance.
Features PCIe 5.0 for the latest high-speed graphics cards and storage.
Offers multiple M.2 slots for flexible and fast storage options.
Includes a 2.5G LAN port for fast and reliable network connectivity.
Provides a user-friendly design with features like BIOS Flashback and an integrated I/O shield.
Cons
Micro ATX form factor may limit expansion options compared to larger motherboards.
Requires careful consideration of cooling solutions, especially for overclocking.
The number of USB ports might be limited for users needing extensive external device connectivity.
Compatibility with certain older components is not guaranteed.
Setup, Compatibility & Care
Installation:
Install the CPU onto the Socket AM5, ensuring the correct orientation.
Insert the DDR5 memory modules into the DIMM slots, following the dual-channel configuration guidelines.
Mount the motherboard in your PC case, securing it with screws.
Connect the necessary power cables (24-pin ATX and 8-pin EPS).
Install your graphics card and other expansion cards into the appropriate PCIe slots.
Connect storage devices to the M.2 slots and SATA ports.
Compatibility:
CPU: Ensure compatibility with AMD Ryzen 7000, 8000, and 9000 series processors.
Memory: Use DDR5 memory modules. Check the motherboard's QVL (Qualified Vendor List) for compatible memory kits.
Graphics Card: Compatible with modern graphics cards via the PCIe 5.0 or 4.0 slots.
Storage: Supports M.2 NVMe SSDs (PCIe Gen5 and Gen4) and SATA III HDDs/SSDs.
Care:
Cooling: Ensure proper cooling with a CPU cooler and case fans, especially if overclocking.
Static Electricity: Ground yourself before handling components to prevent damage.
Drivers: Install the latest drivers from the Asrock website for optimal performance and compatibility.
BIOS Updates: Keep the BIOS updated to the latest version for improved stability and performance.