MSI PRO B850M-A WIFI PROJECT ZERO

Chipset

AMD B850

CPU

Supports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processors
Socket AM5
Memory 4x DDR5 UDIMM, Maximum Memory Capacity 256GB
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.
Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit https://www. msi. com/support/.

Onboard 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.

Slot

4x PCI-E x16 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 3.0 supports up to x1 (From Chipset)
PCI_E4 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)

Audio

Realtek® ALC897
7.1-Channel High Definition Audio
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.

RAID

Supports RAID 0 and RAID 1 for M. 2 NVMe storage devices
Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices

USB

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)

LAN

Realtek® 8126 5G LAN

Internal IO

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

WIRELESS LAN & BLUETOOTH
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.

LED FEATURE

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
Wi-Fi / Bluetooth
Audio connectors
Flash BIOS Button
HDMI
USB 10Gbps Type-C
USB 5Gbps Type-A

OPERATING SYSTEM
Support for Windows® 11 64-bit

PCB Info
Back-connect mATX
243.84mmx243.84mm