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ASRock B850M Pro RS WiFi White Micro ATX Motherboard
- Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors
- 8+2+1 Phase Power Design, 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 x4
- Graphics Output Options: 1 HDMI, 1 DisplayPort
- Realtek ALC897 7.1 CH HD Audio Codec, Nahimic Audio
- 1 Blazing M.2 (PCIe Gen5x4)
- 2 Hyper M.2 (PCIe Gen4x4)
- 4 SATA3
- 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)
- Realtek 2.5G LAN
- 802.11axe WiFi 6E +Bluetooth
- Supports M.2 Bottom Heatsink, BIOS Flashback
Combo Up Savings Up To $830+
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Specs
Reviews (6)
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Learn more about the ASRock B850M Pro RS WiFi White
| Best Seller Ranking | #85 in AMD Motherboards |
|---|
| Brand | ASRock |
|---|---|
| Model | B850M Pro RS WiFi White |
| CPU Socket Type | AM5 |
|---|---|
| CPU Type | Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series |
| Chipset | AMD B850 |
|---|
| Number of Memory Slots | 4x288pin (DDR5) |
|---|---|
| Memory Standard | Up to 8000+(OC) |
| Maximum Memory Supported | 256GB |
| Channel Supported | Dual Channel |
| Memory Performance Profile | AMD EXPO / Intel XMP 3.0 |
| ECC Supported | Yes |
| Buffer Supported | Un-buffered |
| PCI Express 5.0 x16 | 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode* - 15µ Gold Contact in VGA PCIe Slot (PCIE1) |
|---|---|
| PCI Express x4 | 1 x PCIe 4.0 x4 Slot (PCIE2), supports x4 mode* |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
|---|---|
| M.2 | CPU: - 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode* - 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode* Chipset: - 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode* *Supports NVMe SSD as boot disks M2_1 is the first priority for M.2 installation. M2_1 will run at Gen5x4 with 9000 and 7000 series processors, Gen4x4 with 8000 (Phoenix 1) series processors and Gen4x2 with 8000 (Phoenix 2) series processors. If M2_3 is occupied, PCIE2 will be disabled. |
| SATA RAID | 0/1/10 |
| Audio Chipset | Realtek ALC897 |
|---|---|
| Audio Channels | 7.1 Channels |
| LAN Chipset | Dragon RTL8125BG |
|---|---|
| Max LAN Speed | 2.5Gbps |
| Wireless LAN | Wi-Fi 802.11 axe |
| Bluetooth | Bluetooth 5.3 |
| Back I/O Ports | 2 x Antenna Ports 1 x HDMI Port 1 x DisplayPort 1.4 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) 1 x USB 3.2 Gen2 Type-C Port 2 x USB 3.2 Gen1 Ports 4 x USB 2.0 Ports 1 x RJ-45 LAN Port 1 x BIOS Flashback Button HD Audio Jacks: Line in / Front Speaker / Microphone |
|---|
| Onboard USB | 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports) 1 x Front Panel Type C USB 3.2 Gen1 Header |
|---|---|
| Other Connectors | 1 x SPI TPM Header 1 x Power LED and Speaker Header 1 x RGB LED Header* 3 x Addressable LED Headers** 2 x CPU Fan Connectors (4-pin) (Smart Fan Speed Control)*** 3 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)*** 1 x Front Panel Audio Connector *Supports in total up to 12V/3A, 36W LED Strip **Support in total up to 5V/3A, 15W LED Strip ***CPU_FAN1 supports the fan power up to 1A (12W). CPU_FAN2 and CHA_FAN1~3 support the fan power up to 3A (36W). CPU_FAN2 and CHA_FAN1~3 can auto detect if 3-pin or 4-pin fan is in use. |
| Form Factor | Micro ATX |
|---|---|
| Dimensions (W x L) | 9.6" x 9.6" |
| Power Pin | 1 x 24 pin ATX Power Connector 1 x 8 pin 12V Power Connector (Hi-Density Power Connector) 1 x 4 pin 12V Power Connector (Hi-Density Power Connector) |
| Software | Software - ASRock Motherboard Utility (A-Tuning) - ASRock Dragon 2.5G LAN Software - ASRock Polychrome SYNC UEFI - ASRock EZ Mode - ASRock Full HD UEFI - ASRock Auto Driver Installer - ASRock Instant Flash |
|---|---|
| Windows 11 | Supported |
| Features | Superb Productivity - PCIe Gen5 (Graphics, M.2) - Dual Channel DDR5 Rock-Solid Durability - 8+2+1 Power Phase, Dr.MOS for VCore+SOC+MISC - Pre-Installed I/O Shield Ultrafast Connectivity - 2.5G LAN, 802.11axe Wi-Fi 6E Module EZ Update - BIOS Flashback Button - ASRock Auto Driver Installer EZ Troubleshooter - ASRock Post Status Checker |
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| Package Contents | 2 x SATA Data Cables 2 x ASRock WiFi 2.4/5/6 GHz Antennas |
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| First Listed on Newegg | August 04, 2025 |
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 3 years
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Return for refund until: January 31, 2026
- Return for replacement until: January 31, 2026
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2025 and December 31, 2025 you will have until January 31, 2026 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-909-590-8308
- Support Email: support@asrockamerica.com
- Support Website
- View other products from ASRock
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The ASRock B850M Pro RS WiFi White is a white Micro-ATX AM5 motherboard for Ryzen 7000, 8000, or 9000 series processors, suited to compact PC builders who want DDR5, Wi-Fi 6E, Bluetooth 5.3, and 2.5GbE networking onboard.
Recommended For
- Mid-range AM5 gaming builders pairing a Ryzen 5-class processor with a discrete graphics card; a review found gaming performance in line with comparable boards and described the board as a fit for this kind of build.
- Compact-build makers who want a micro-ATX AM5 board with a black-and-white look, built-in Wi-Fi 6E, and 2.5Gb Ethernet without adding separate networking cards.
- AM5 system builders who want room for several NVMe drives plus SATA storage; the board has three M.2 sockets and four SATA ports, with a Gen5 M.2 slot for a compatible drive.
- Builders moving between Ryzen 7000, 8000, and 9000-series CPUs who value a BIOS Flashback feature for updating the BIOS without a CPU or memory installed.
Real-World Use Scenarios
- Building a compact AM5 desktop for a small or mid-size case: the micro-ATX board supports Ryzen 7000, 8000, and 9000 processors, with onboard Wi-Fi and Bluetooth for a build that may not have room for separate expansion cards.
- Putting together a gaming PC with a discrete graphics card: the board provides a PCIe x16 graphics slot and supports current AM5 Ryzen CPUs; a review found gaming performance was close to other tested boards, so the board itself is unlikely to be the main factor in frame rates.
- Installing a system drive plus separate SSDs for games, projects, or media: three M.2 sockets and four SATA ports give builders room to add storage without relying only on external drives; check the manual’s slot-sharing notes when planning expansion.
- Using a desktop where Wi-Fi is more practical than running Ethernet: built-in Wi-Fi 6E and Bluetooth allow wireless networking and peripherals without adding separate cards; using the 6 GHz Wi-Fi band requires a compatible router and supported setup.
- Building a wired home workstation or gaming PC connected to a compatible faster local network: the 2.5GbE port can support transfers faster than standard gigabit Ethernet when the network equipment and other devices also support those speeds.
- Upgrading an AM5 build or assembling a system with a newer supported Ryzen processor: BIOS Flashback provides a firmware-update option, which can be useful during setup if an update is needed for the chosen configuration.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | AM5 desktop builds using Ryzen 7000, 8000, or 9000 Series processors, with DDR5 memory, PCIe expansion, and M.2 or SATA storage |
| Processor And Platform | AMD B850 chipset with an AM5 socket, compatible with Ryzen 7000, 8000, and 9000 Series processors |
| Memory Configuration | Four DDR5 DIMM slots support up to 256GB in dual-channel mode, with speeds up to 8000+ (OC), AMD EXPO and Intel XMP 3.0 profiles, ECC, and unbuffered memory |
| Expansion And Storage | One PCIe 5.0 x16 slot and one PCIe 4.0 x4 slot; three M.2 sockets support 2280 NVMe SSDs, plus four SATA 6Gb/s ports with RAID 0/1/10. M.2 speed varies by processor: M2_1 supports Gen5x4 with Ryzen 7000/9000, Gen4x4 with Ryzen 8000 Phoenix 1, and Gen4x2 with Phoenix 2; occupying M2_3 disables PCIE2 |
| Rear I/O And Internal USB | Rear I/O includes USB 3.2 Gen2 Type-A and Type-C, two USB 3.2 Gen1 ports, and four USB 2.0 ports; headers support four additional USB 3.2 Gen1 ports, four USB 2.0 ports, and front-panel USB 3.2 Gen1 Type-C. 17 USB ports total |
| Networking | Dragon RTL8125BG 2.5Gbps Ethernet, Wi-Fi 6E (802.11axe), and Bluetooth 5.3 |
| Display Outputs | One HDMI port and one DisplayPort 1.4 |
| Audio | Realtek ALC897 audio chipset with 7.1-channel audio and rear line-in, front-speaker, and microphone jacks |
| Power And Cooling | 8+2+1-phase Dr.MOS power design for VCore, SOC, and MISC; 24-pin ATX and 8-pin plus 4-pin 12V power connectors; two CPU fan and three chassis fan connectors |
| Board Features And Headers | BIOS Flashback button, SPI TPM header, RGB LED header, three addressable LED headers, front-panel audio connector, and pre-installed I/O shield |
| Form Factor And Dimensions | White Micro ATX motherboard measuring 9.6 × 9.6 inches |
| Model Identifiers | ASRock B850M Pro RS WiFi White; model number 90-MXBT30-A0UAYAZ |