Asrock B850M Pro RS WiFi AMD B850 AM5 micro ATX
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About This Item
- 3 M.2 slots for high-speed NVMe storage
- AMD B850 chipset with Socket AM5 for Ryzen 7000/8000/9000 CPUs
- micro ATX form factor with 7.1-channel audio and Wi-Fi 6E
- Supports DDR5 memory up to 256 GB with dual-channel architecture
- PCIe 5.0 x16 slot plus M.2 Gen5 for maximum expansion
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ASRock B850M Pro RS WiFi | Micro ATX AM5 Motherboard
The Asrock B850M Pro RS WiFi AMD B850 Socket AM5 micro ATX is a compact yet powerful motherboard designed for AMD Ryzen 7000, 8000, and 9000 series processors. Built on the AMD B850 chipset, it delivers stable performance, advanced connectivity, and future-proof features for both gaming and productivity builds.
Key Specifications
| Metric | Spec. |
|---|---|
| Processor Socket | Socket AM5 |
| Memory Support | DDR5, up to 256 GB |
| M.2 Slots | 3 (PCIe 5.0 + PCIe 4.0) |
| Wi-Fi Standard | Wi-Fi 6E (802.11ax) |
| LAN Speed | 2.5 Gb/s |
| Form Factor | micro ATX |
Optimized VRM Design for Stable Power Delivery
The 8+2+1 power phase design ensures smooth and reliable power delivery to your CPU, even during demanding workloads. Featuring Dr. MOS technology, it intelligently delivers higher current per phase, improving thermal performance and system stability. The Hi-Density Power Connectors are engineered to handle higher currents, reducing the risk of overheating during heavy overclocking.
High-Speed Storage and Memory Support
With three M.2 slots—including one PCIe 5.0 and two PCIe 4.0—this motherboard supports the latest ultra-fast SSDs, offering up to 128 Gb/s transfer speeds. Dual-channel DDR5 memory support with XMP/EXPO profiles allows for easy overclocking, delivering enhanced performance for memory-intensive applications.
Advanced Cooling and DIY-Friendly Features
The 6-layer PCB design improves signal stability and heat dissipation, while the aluminum heatsink keeps critical components cool under load. ASRock’s Fan-Tastic Tuning automatically detects fan types and allows for precise control over cooling curves. The reinforced PCIe 5.0 steel slot ensures secure installation of heavy graphics cards.
Comprehensive Connectivity Options
Equipped with Wi-Fi 6E and Bluetooth 5.2, this motherboard offers fast wireless connectivity across multiple bands. The 2.5 Gb/s LAN controller provides reliable wired networking, while the Realtek ALC897 audio chip delivers 7.1-channel surround sound. Multiple USB ports, including USB 3.2 Gen 2 Type-C, ensure broad peripheral compatibility.
Box Contents
- ASRock B850M Pro RS WiFi motherboard
- SATA cables (quantity not specified)
- Wi-Fi antennas
- I/O shield
- User manual
Check Before You Buy
- Confirm your AMD Ryzen processor is compatible with Socket AM5.
- Verify your case supports micro ATX form factor (244 mm x 244 mm).
- Ensure your power supply has a 24-pin ATX and 8-pin EPS connector.
- Check if your DDR5 memory modules support XMP/EXPO for overclocking.
Frequently Asked Questions
Q: Does this motherboard support PCIe 5.0 graphics cards?
A: Yes, it has one PCIe 5.0 x16 slot reinforced with steel for added durability.
Q: Can I use DDR4 memory with this board?
A: No, it only supports DDR5-SDRAM memory modules.
Q: Is Wi-Fi 6E included?
A: Yes, it features built-in Wi-Fi 6E (802.11ax) with 2T2R antennas.
Q: How many M.2 SSDs can I install?
A: You can install up to three M.2 SSDs, with one supporting PCIe 5.0 speeds.
Q: Does it have RGB lighting control?
A: Yes, it includes Polychrome RGB headers and supports SignalRGB software for lighting effects.
The Consultant’s Verdict & Warranty
The ASRock B850M Pro RS WiFi is an excellent choice for users building a compact, high-performance AMD AM5 system. Its combination of PCIe 5.0 storage, Wi-Fi 6E, robust VRM design, and micro ATX size makes it ideal for both gaming and content creation. 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 ready |
| 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 ready |
| 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 ready |
| 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 |
| Identifiers | |
| Distributor SKUs | 90-MXBR7-A0UAYZ, 90-MXBR70-A0UAYZ, 545584, 552774, 556931, MBASR-B850MPRSW, B850MPRORSWIFI, CLB850MPRORSWIFI |
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