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    MSI PRO B850-S WIFI6E Motherboard, ATX - Supports AMD Ryzen 9000 / 8000 / 7000 Processors, AM5 - DDR5 Memory Boost (8200+ MT/s OC), PCIe 4.0 x16, M.2 Gen5, Wi-Fi 6E, 2.5G LAN

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    • PRO B850M-A WIFI
    • Supports AMD Ryzen 9000 / 8000 / 7000 Series Desktop Processors
    • Supports DDR5 Memory, Dual Channel DDR5 8200+ MT/s (OC)
    • Ultra Performance: 12+2+1 Duet Rail Power System with P-PAK, dual 8-pin CPU power connectors, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper and server-grade level material
    • Frozr Guard: MOSFET thermal pads rated for 7W/mK, and M.2 Shield Frozr are built for high performance system and non-stop experience
    • EZ DIY: EZ M.2 Clip II, EZ PCIe Clip II and EZ Antenna
    • Lightning Fast Game experience: PCIe 4.0 slot and Lightning Gen 5 x4 M.2
    • 2.5G LAN with Wi-Fi 6E Solution: the latest solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission
    • Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience

    Combo Up Savings Up To $2060+

    The more you add, the more you'll save!
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    Overview
    Specs
    Reviews (24)
    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard
    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard
    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    Business Elegance

    The PRO B850-S WIFI6E is a business-oriented ATX motherboard with a 12 Duet Rail Power System, constructed around the latest AMD B850 chipset which supports AMD Ryzen 9000 / 8000 / 7000 series desktop processors, featuring PCIe 5.0 M.2, 2.5G LAN, Wi-Fi 6E and DDR5 that delivers the capacity to support a broad spectrum of both cutting-edge and innovative hardware.

    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    Supports AMD Ryzen 9000 / 8000 / 7000 Series Desktop Processors

    The PRO B850-S WIFI6E motherboard supports AMD Ryzen 9000 / 8000 / 7000 Series processors.

    • Form Factor: ATX
    • Socket Type: AM5
    • Chipset: AMD B850
    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    Ultra Power - 12 Duet Rail Power System with P-PAK

    With exclusive Core Boost technology and EZ OC Tuning functions, the PRO B850-S WIFI6E is able to sustain heavy CPU power loads to support system-demanding settings:

    • Digital PWM IC
    • 12 Duet Rail Power System (P-PAK)
    • 2 Phase SOC Power
    • 1 Phase MISC Power
    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    Frozr Design

    Frozr Guard: VRM heatsink, 7W/mK MOSFET thermal pads, and M.2 Shield Frozr for improved thermal dissipation.

    Frozr Sync: Connect and synchronize cooling with strategically placed pin-headers - including CPU fan header (2A), Combo fan (3A, supports both pump fan and system fan) and system fans.

    Frozr Control: Manage speeds and temperature for all fans of your system in MSI Center with Cooling Wizard and Frozr AI Cooling.

    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    4 x DDR5 Dual Channel (8200+ MT/s OC)*

    Memory Boost: A fully-isolated DDR circuit delivers pure data signals for optimal gaming and overclocking performance.

    High-Efficiency Mode: Enabling High-Efficiency-Mode in the MSI BIOS increases memory bandwidth and reduces latency. Four different modes allow users to find out the optimal configuration based on the quality of their memory modules.

    EXPO Profiles in the MSI BIOS are MSI OC LAB optimized and can be easily enabled with auto power settings for optimized memory speed and stability.

    * 1DPC 1R Max. overclocking frequency 8200+ MT/s, supports AMD EXPO.

    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    Fortified PCIe 4.0 x16 Slot

    MSI PCI Express Steel Armor slots are secured to the motherboard with extra solder points to support the weight of heavy graphics cards. When every advantage in games counts, Steel Armor also shields the point of contact from electromagnetic interference.

    1 x PCIe 4.0/3.0 x16 slot (with Steel Armor and EZ PCIe Clip II)

    1 x PCIe 4.0/3.0 x4 slot

    1 x PCIe 3.0 x1 slot

    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    Gen5 M.2 Connector

    The PRO B850-S WIFI6E motherboard features MSI's M.2 slots:

    1 x Gen5 x4 128Gbps slot (with M.2 Shield Frozr)

    1 x Gen4 x4 64Gbps slot

    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    EZ DIY

    The DIY Friendly designs optimize the assemble process and experience.

    EZ PCIe Clip II: Allows for easy removal of the graphics card by pressing the tail-like lock with one finger, even in the cramped case spaces.

    EZ M.2 Clip II: Install or remove the SSD with a simple push of the latch, without using any screws.

    EZ Antenna: MSI's latest Wi-Fi antenna not only boasts a beautiful appearance but also features a magnetic design, making it easier to adjust the antenna's placement.

    MSI PRO B850-S WIFI6E AM5 AMD B850 Motherboard

    High-speed Connectivity

    • 2.5G LAN: A Realtek 2.5Gbps LAN controller delivers a premium network experience.
    • Wi-Fi 6E: Features the Wi-Fi 6E solution (ultra-low latency, high-bandwidth) & Bluetooth 5.3 technology.
    • USB 10Gbps Type-C: Connect to devices and transfer files at high bandwidth rates.
    • HD Audio: 7.1-Channel High Definition Audio with Audio Boost.
    The PRO B850-S WIFI6E is a business-oriented ATX motherboard with a 12 Duet Rail Power System, constructed around the latest AMD B850 chipset which supports AMD Ryzen 9000 / 8000 / 7000 series desktop processors, featuring PCIe 5.0 M. 2, 2.5G LAN, Wi-Fi 6E and DDR5 that delivers the capacity to support a broad spectrum of both cutting-edge and innovative hardware.

    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

      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, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.

    • Return for refund until: January 31, 2027
    • Return for replacement until: January 31, 2027
    • This item is covered by Newegg.ca's Extended Holiday Return Policy.
    • Read full return policy for details.
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    The MSI PRO B850-S WIFI6E is an ATX AM5 motherboard for Ryzen 7000, 8000, and 9000 desktop processors, suited to builders who want DDR5 support, a PCIe 5.0 M.2 slot with compatible CPUs, and Wi-Fi 6E plus 2.5Gb Ethernet.

    Recommended For

    • AM5 PC builders assembling a work-and-play desktop with a Ryzen 7000, 8000, or 9000 processor: MSI positions the PRO line for productivity, and this board combines Wi-Fi 6E, 2.5GbE, and a mix of USB ports for everyday connectivity.
    • PC gamers building around a compatible Ryzen CPU and a PCIe graphics card: the board supports AM5 processors, DDR5 memory, and one PCIe 4.0 x16 graphics slot, with Wi-Fi 6E and 2.5GbE for network access.
    • Builders who want fast local storage for an OS, games, and work files without adding a storage card: it has two M.2 sockets, including one PCIe 5.0 x4 slot with Ryzen 7000 or 9000 processors, plus four SATA ports.
    • First-time or occasional PC builders who value simpler component installation: MSI lists EZ M.2 and PCIe clips, an EZ antenna, and debug LEDs intended to help with installation and troubleshooting.

    Spec Summary

    AttributeValue
    Best ForRyzen 7000, 8000, or 9000 desktop builds needing DDR5 memory, PCIe and M.2 expansion, and wired or wireless networking
    Processor And PlatformAMD B850 chipset with an AM5 socket, compatible with Ryzen 7000, 8000, and 9000 Series processors
    Memory ConfigurationFour DDR5 DIMM slots with dual-channel support, up to 256GB, and speeds from 4800–5600 MT/s JEDEC or 5600–8200 MT/s with overclocking; supports AMD EXPO, non-ECC unbuffered memory, and CUDIMM in clock-driver bypass mode only
    Expansion SlotsPCIe 4.0 x16 slot operates at up to x16 with Ryzen 9000/7000, x8 with Ryzen 8700/8600/8400, or x4 with Ryzen 8500/8300; also includes a PCIe 4.0 x4 and PCIe 3.0 x1 slot
    Storage And RAIDTwo M.2 slots: M.2_1 supports up to PCIe 5.0 x4 with Ryzen 9000/7000 or PCIe 4.0 x4 with Ryzen 8000; M.2_2 supports PCIe 4.0 x4 or x2 depending on processor. Supports 22110/2280 drives in M.2_1, 2280/2260 in M.2_2, and four SATA 6Gb/s drives; RAID 0/1/10 for SATA and RAID 0/1 for M.2 NVMe
    Networking2.5Gbps Ethernet, Wi-Fi 802.11ax, Bluetooth 5.3, and one Ethernet port
    Rear I/O And ConnectivityRear connections include HDMI, DisplayPort, three USB 10Gbps Type-A, four USB 5Gbps Type-A, one USB 10Gbps Type-C, two Wi-Fi/Bluetooth antenna connectors, three audio connectors, and 2.5G LAN; also includes Clear CMOS and Flash BIOS buttons
    AudioRealtek ALC897 audio chipset with 7.1-channel audio
    Internal Headers And PowerFan connections include one CPU fan, one combo pump/system fan, and four system fans; also includes front-panel, chassis-intrusion, front-audio, COM, tuning-controller, RGB, addressable RGB, and TPM 2.0 headers. Power connections include one ATX and two CPU connectors
    Form Factor And DimensionsATX motherboard measuring 12.0 × 9.6 inches
    Operating System SupportSupports Windows 11
    Model IdentifiersMSI PRO B850-S WIFI6E; model code PROB850SWIFI6E