MSI PRO B850M-A WIFI, AM5, 4x DDR5 256GB – PRO B850M-A WIFI

The MSI PRO B850M-A WIFI is a reliable and future-ready Micro-ATX motherboard designed for modern AMD systems. Built on the AMD B850 chipset, it supports the latest AMD Ryzen™ 9000, 8000, and 7000 Series desktop processors using the AM5 socket, making it an excellent foundation for productivity, business, and high-performance home builds.

• Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
• Supports DDR5 Memory, Dual Channel DDR5 8200+ MT/s (OC)
• Ultra Performance: Direct 8+2+1 Power System 60A SPS, 8+4-pin CPU power connectors, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper and server-grade level material
• Frozr Guard: Extended Heatsink, MOSFET thermal pads rated for 7W/mK, additional choke thermal pads and EZ M.2 Shield Frozr II are built for high performance system and non-stop experience
• EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, and EZ PCIe Clip II
• Lightning Fast Game experience: PCIe 5.0 slot and Lightning Gen 5 x4 M.2
• 5G LAN: 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

Key Features:

Specifications:      

Chipset	AMD B850
CPU Support	AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
Socket	AM5
Memory	4x DDR5 UDIMM, Maximum 256GB
Memory Speed	DDR5 8200 – 5600 (OC) MT/s / 5600 – 4800 (JEDEC) MT/s
Ryzen 9000 Max OC Frequency	1DPC 1R: 8200+ MT/s 1DPC 2R: 6400+ MT/s 2DPC 1R: 6400+ MT/s 2DPC 2R: 6000+ MT/s
Memory Features	Supports AMD POR & JEDEC speeds, Memory Overclocking, AMD EXPO™, Dual-Channel, Non-ECC, Un-buffered, CUDIMM (Clock Driver bypass mode) Note: DIMM slots have single-sided latches. Compatibility varies by CPU/memory; see MSI support page for details
Onboard Graphics	1x HDMI™ 2.1 (max 4K 60Hz)<br>1x DisplayPort 1.4 (max 4K 60Hz) *Requires CPU with integrated graphics
Expansion Slots	2x PCI-E x16, 1x PCI-E x1 PCI_E1: PCIe 5.0 x16 (CPU) PCI_E2: PCIe 3.0 x1 (Chipset) PCI_E3: PCIe 4.0 x4 (Chipset)
PCI_E1 Slot Compatibility	PCIe 5.0 x16 (Ryzen 9000/7000) PCIe 4.0 x8 (Ryzen 8700/8600/8400) PCIe 4.0 x4 (Ryzen 8500/8300)
Audio	Realtek® ALC897, 7.1-Channel High Definition Audio
Storage	2x M.2 Slots M.2_1: PCIe 5.0 x4 (Ryzen 9000/7000), PCIe 4.0 x4 (Ryzen 8000), supports 2280/2260 devices M.2_2: PCIe 4.0 x4, PCIe 4.0 x2 (Ryzen 8500/8300), supports 2280/2260 devices 4x SATA 6Gb/s
RAID Support	SATA: RAID 0, 1, 10 M.2 NVMe: RAID 0, 1
USB Ports	Front: 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-C Rear: 3x USB 5Gbps Type-A, 3x USB 10Gbps Type-A, 2x USB 10Gbps Type-C
LAN	Realtek® 8126VB 5G LAN
Internal I/O Connectors	1x ATX_PWR, 2x CPU_PWR, 1x PCIE_PWR 8-pin 1x CPU Fan, 1x Combo Fan (Pump/System), 3x System Fan 2x Front Panel (JFP), 1x Chassis Intrusion (JCI), 1x Front Audio (JAUD), 1x Com Port (JCOM) 1x Tuning Controller (JDASH) 3x Addressable V2 RGB LED (JARGB_V2), 1x RGB LED (JRGB) 1x TPM Header (TPM 2.0) 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-C
LED Features	4x EZ Debug LED, 1x EZ Memory Detection LED
Back Panel Ports	Clear CMOS Button DisplayPort USB 10Gbps Type-A USB 10Gbps Type-A USB 5Gbps Type-A 5G LAN Audio connectors Flash BIOS Button HDMI™ USB 10Gbps Type-C USB 5Gbps Type-A
PCB Info	mATX 243.84mmx243.84mm
Operating System Support	Windows® 11 64-bit