| Basic Information | |
| BIOS | Flash BIOS Button |
| Chipset | AMD B850 |
| Form Factor | mATX 243.84mmx243.84mm |
| Supported CPU | Supports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processors Socket AM5 |
| Audio | Realtek ALC897 7.1-Channel High Definition Audio |
| Expansion Slots | |
| M.2 Socket | 2x M.2 M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 devices M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices M2_1 slot Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors) Supports up to PCIe 4.0 x4 (For Ryzen™ 8000 Series processors) M2_2 slot Supports up to PCIe 4.0 x4 Supports up to PCIe 4.0 x2 (For Ryzen™ 8500/ 8300 Series processors) *Please refer to the manual for M.2 SSD heatsink restrictions. |
| PCI | 2x PCI-E x16 slot 1x PCI-E x1 slot PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU) PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset) PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset) PCI_E1 slot Supports PCIe 5.0 x16 (For Ryzen™ 9000/ 7000 Series processors) Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors) Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor) |
| Graphics | |
| Graphics | 1x HDMI Support HDMITM 2.1, maximum resolution of 4K 60Hz 1x DisplayPort Support DisplayPort 1.4, maximum resolution of 4K 60Hz *Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed. |
| Memory | |
| Slots | 4x UDIMM |
| Supported Memory | Memory Support DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s Ryzen™ 9000 Series Processors max. overclocking frequency: 1DPC 1R Max speed up to 8200+ MT/s 1DPC 2R Max speed up to 6400+ MT/s 2DPC 1R Max speed up to 6400+ MT/s 2DPC 2R Max speed up to 6000+ MT/s Supports AMD POR Speed and JEDEC Speed Supports Memory Overclocking and AMD EXPOTM Supports Dual-Channel mode Supports Non-ECC, Un-buffered memory Supports CUDIMM, Clock Driver bypass mode only* * CUDIMM support and POR boot frequency may vary by CPU series, with manual overclocking available after boot. Certain CPUs may fail to boot, but future BIOS updates will improve compatibility. The DIMM slots on this motherboard only have single-sided latches. |
| Type | DDR5 |
| Maximum Memory | 256GB |
| Connector & Ports | |
| Audio | 1x Front Audio (JAUD) |
| HDMI | 1x HDMI Support HDMITM 2.1, maximum resolution of 4K 60Hz |
| Internal I/O Ports | 1x Power Connector(ATX_PWR) 2x Power Connector(CPU_PWR) 1x Power Connector(PCIE_PWR 8pin) 1x CPU Fan 1x Combo Fan (Pump_Sys Fan) 3x System Fan 2x Front Panel (JFP) 1x Chassis Intrusion (JCI) 1x Front Audio (JAUD) 1x Com Port (JCOM) 1x Tuning Controller connector(JDASH) 3x Addressable V2 RGB LED connector (JARGB_V2) 1x RGB LED connector(JRGB) 1x TPM pin header(Support TPM 2.0) 4x USB 2.0 ports 2x USB 5Gbps Type A ports 1x USB 10Gbps Type C ports |
| LAN Port (s) | Realtek 8126VB 5G LAN |
| Supported Storage | 2x M.2 M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 devices M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices 4x SATA 6G M2_1 slot Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors) Supports up to PCIe 4.0 x4 (For Ryzen™ 8000 Series processors) M2_2 slot Supports up to PCIe 4.0 x4 Supports up to PCIe 4.0 x2 (For Ryzen™ 8500/ 8300 Series processors) *Please refer to the manual for M.2 SSD heatsink restrictions. |
| TPM (Trusted Platform Module ) | 1x TPM pin header(Support TPM 2.0) |
| USB (s) | 4x USB 2.0 (Front) 3x USB 5Gbps Type A (Rear) 2x USB 5Gbps Type A (Front) 3x USB 10Gbps Type A (Rear) 2x USB 10Gbps Type C (Rear) 1x USB 10Gbps Type C (Front) |
| Display Ports (s) | 1x DisplayPort Support DisplayPort 1.4, maximum resolution of 4K 60Hz |
| Wireless Communication module | Wi-Fi 7 The Wireless module is pre-installed in the M.2 (Key-E) slot Supports MU-MIMO TX/RX, 2.4GHz/5GHz/6GHz (160MHz) up to 2.9Gbps Supports 802.11 a/b/g/n/ac/ax/be Supports Bluetooth 5.4, MLO, 4KQAM * 6GHz band support may depend on every country’s regulations, and Wi-Fi 7 will be ready in Windows 11 version 24H2. ** The Bluetooth version may be updated; please refer to the Wi-Fi chipset vendor’s website for details. Bluetooth 5.4 will be ready in Windows 11 version 24H2. |
| RAID | Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices Supports RAID 0 and RAID 1 for M.2 NVMe storage devices |
| Other Features | |
| Special Features | 4x EZ Debug LED 1x EZ Memory Detection LED |
| Warranty Details | |
| Warranty | 3 Years |
The MSI PRO B850M-A WIFI AM5 mATX Motherboard is designed to deliver powerful performance and next-generation connectivity for modern PC builds. Supporting AMD Ryzen 9000, 8000, and 7000 series processors, it is powered by the advanced AMD B850 chipset, ensuring stable operation and excellent efficiency in a compact micro-ATX form factor (243.84mm x 243.84mm).
This motherboard is equipped with 4x DDR5 UDIMM slots, allowing up to 256GB memory capacity. It supports speeds starting from 4800MT/s (JEDEC) and can be overclocked up to 8200+MT/s (OC). With dual-channel architecture, AMD EXPO compatibility, and clock driver bypass mode, users can expect smooth multitasking, reliable performance, and optimized overclocking potential.
For display and graphics support, it features 1x HDMI 2.1 and 1x DisplayPort 1.4, both capable of running 4K resolution at 60Hz — ideal for APUs with integrated graphics. Expansion slots include PCIe 5.0 x16 (Ryzen 9000/7000), PCIe 4.0 x4, and PCIe 3.0 x1, offering excellent flexibility for GPUs and additional PCIe devices.
When it comes to storage, the PRO B850M-A WIFI includes 2x M.2 slots and 4x SATA 6Gb/s ports. The primary M.2 slot supports PCIe 5.0 x4 with Ryzen 9000/7000 CPUs and PCIe 4.0 x4 with Ryzen 8000 CPUs, while the secondary slot supports PCIe 4.0 x4/x2 depending on the processor. Both M.2 slots support NVMe RAID 0/1, and SATA storage supports RAID 0/1/10, delivering high-speed and flexible storage options.
For networking, it comes with Realtek 8126VB 5G LAN and Wi-Fi 7 with Bluetooth 5.4, ensuring ultra-fast wired and wireless connectivity. With MU-MIMO support, multi-band coverage (2.4GHz/5GHz/6GHz), and compatibility with Windows 11 24H2, this motherboard is ready for seamless online gaming, streaming, and multitasking.
The audio system is powered by Realtek ALC897 7.1-channel high-definition codec, providing immersive sound quality. Connectivity features include multiple USB ports (including 10Gbps Type-C and Type-A), ARGB headers, TPM 2.0 support, and EZ Debug LEDs for easier troubleshooting.
With its premium build quality, high-speed storage, next-gen wireless connectivity, and DDR5 memory support, the MSI PRO B850M-A WIFI AM5 mATX Motherboard is an ideal choice for users looking to build a future-ready, high-performance desktop PC.
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