MSI MAG B860M MORTAR WIFI – LGA1851 Micro-ATX DDR5 Motherboard, PCIe 5.0 x16, 1× M.2 Gen5 + 2× Gen4, Wi-Fi 7, 5G LAN, Thunderbolt 4

INTEL B860

Supports Intel Core Ultra Processors (Series 2)

C

4x DDR5 UDIMM, Maximum Memory Capacity 256GB

Memory Support 9200 - 6400 (OC) MT/s / 6400 - 4800 (JEDEC) MT/s

Max. overclocking frequency:

• 1DPC 1R Max speed up to 9200+ MT/s

• 1DPC 2R Max speed up to 7200+ MT/s

• 2DPC 1R Max speed up to 6400+ MT/s

• 2DPC 2R Max speed up to 5600+ MT/s

Supports Intel POR Speed and JEDEC Speed

Supports Memory Overclocking and Intel XMP 3.0

Supports Dual-Controller Dual-Channel mode

Supports Non-ECC, Un-buffered memory

Supports CUDIMM

• 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

1x HDMI

Support HDMI 2.1 with FRL, maximum resolution of 8K 60Hz/ 

1x DisplayPort

Support DisplayPort 1.4, maximum resolution of 4K 60Hz/ 

1x Type-C DisplayPort

Thunderbolt 4 ports, supporting DisplayPort 2.1 with UHBR20 over USB Type-C, with a maximum resolution of 4K@120Hz / 8K@60Hz

Available only on processors featuring integrated graphics.

Graphics specifications may vary depending on the CPU installed.

1x PCI-E x16 slot

1x PCI-E x4 slot

PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)

PCI_E2 Gen PCIe 4.0 supports up to x4 (From Chipset)

Realtek ALC897 Codec

7.1-Channel High Definition Audio

Supports S/PDIF output

3x M.2

M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260/2242 devices

M.2_2 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices

M.2_3 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices

4x SATA 6G

Please refer to the manual for M.2 SSD heatsink restrictions.

Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices

Thunderbolt Resource CPU

1x Thunderbolt4 ports (Rear)

Supports up to 40Gbps transfer rate with Thunderbolt devices

Supports up to 20Gbps transfer rate with USB4 devices

Supports up to 10Gbps transfer rate with USB 3.2 devices

Supports up to 5V/3A,15W power charging

Each port can daisy-chain up to three Thunderbolt 4 devices or five Thunderbolt 3 devices

Supports up to 8K display

4x USB 2.0 (Rear)

4x USB 2.0 (Front)

2x USB 5Gbps Type A (Front)

3x USB 10Gbps Type A (Rear)

1x USB 10Gbps Type C (Rear)

1x USB 10Gbps Type C (Front)

Intel Killer E5000 5Gbps LAN

1x Thunderbolt5 card connector(JTBT5, support RTD3)

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)

4x System Fan

1x EZ Conn-header (JAF_1)

2x Front Panel (JFP)

1x Chassis Intrusion (JCI)

1x Front Audio (JAUD)

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

Intel Killer BE1750x 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* (320MHz) up to 5.8Gbps

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 SV3.
The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor's website for details. Bluetooth 5.4 support schedule depends on MSFT Windows 11 plan.

4x EZ Debug LED

1x EZ Memory Detection LED

1. DisplayPort

2. USB 2.0

3. USB 10Gbps Type-A

4. 5G LAN

5. Wi-Fi / Bluetooth

6. Audio Connectors

7. HDMI

8. Thunderbolt 4 40Gbps (Type-C)

9. Flash BIOS Button

10. Clear CMOS Button

11. USB 10Gbps Type-C

12. USB 10Gbps Type-A

13. S/PDIF-OUT

Support for Windows 11 64-bit