Product Overview

MSI PRO B850M-A WiFi

MSI PRO B850M-A WiFi AM5 Micro-ATX DDR5 128 GB Motherboard

MSI Motherboard $179.99

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SocketAM5
ChipsetB850
Form FactorMicro-ATX
MemoryDDR5
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Overview

The MSI PRO B850M-A WiFi is a Micro-ATX motherboard for AM5. It supports DDR5 memory up to 8600 MT/s (OC).

  • ULTRA POWER - SUPPORTS THE LATEST RYZEN 9000 PROCESSORS IN HIGH PERFORMANCE - The PRO B850M-A WIFI employs a Direct 8 phases CPU power (60A, SPS) VRM for the AMD B850 chipset (AM5, Ryzen 9000 / 8000 / 7000) with Core Boost architecture
  • FROZR GUARD - Excellent cooling features such as 7W/mK MOSFET thermal pads, extra choke thermal pads and an Extended Heatsink; Includes chipset heatsink, EZ M.2 Shield Frozr II, a Combo-fan (for pump & system) header (3A)
  • DDR5 MEMORY, PCIe 5.0 x16 SLOTS - 4 x DDR5 DIMM SMT slots enable extreme memory overclocking speeds (1DPC 1R, 8200+ MT/s OC); 1 x PCIe 5.0 x16 SMT slot (128GB/s) with Steel Armor supports cutting-edge graphics cards
  • DOUBLE M.2 CONNECTORS - Storage options include 1 x M.2 Gen5 x4 128Gbps slot and 1 x M.2 Gen4 x4 64Gbps slot; Features EZ M.2 Shield Frozr II to prevent thermal throttling and EZ M.2 Clip II for EZ DIY experience
  • HIGH-SPEED CONNECTIVITY - Network hardware includes a latest Wi-Fi 7 module with Bluetooth 5.4 & 5Gbps LAN; Rear ports include USB 10Gbps Type-C and 7.1 HD Audio with Audio Boost

Specifications

Manufacturer MSI
Model Number PRO B850M-A WIFI
Launch Date June 2025
CPU Socket AM5
Chipset Model Intel B850
Board Size / Form Factor Micro-ATX
Supported Memory Type DDR5
DIMM Slots 4
Maximum RAM Capacity 128 GB
Valid DDR4 Speeds DDR5-4800 / DDR5-6000 / DDR5-6400 / DDR5-8200 / DDR5-8600 (OC)
ECC Memory Support No
Expansion Slots (PCIe) 2 × PCIe x16, 1 × PCIe x1
PCIe x16 (Qty) 2
PCIe x4 (Qty) 0
PCIe x1 (Qty) 1
M.2 Slot Count 2 × M.2
M.2 Device Compatibility 2260 / 2280 - M Key, 2260 / 2280 - M Key
SATA III Ports 0 × SATA 6Gbps
SATA Express Ports 0
Wired Networking (LAN) N/A
Onboard Wi-Fi Yes
Wi-Fi Standard 7 (802.11be)
Rear-Panel USB USB 3.2 Gen2, USB 3.2 Gen1
Internal USB 3.2 Gen 2x2 Headers 0
Internal USB 3.2 Gen 2 Headers 1
Internal USB 3.2 Gen 1 Headers 1
Internal USB 2.0 Headers 0
NVIDIA SLI No
AMD CrossFire No
RAID Capability No
Back-Connect Layout No
Manufacturer Part Number (MPN) PRO B850M-A WIFI
SKU Code PRO B850M-A WIFI
GTIN / EAN 824142425459
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