MSI MAG B860M Mortar WiFi LGA 1851 mATX Motherboard

Chipset

INTEL B860

CPU

Supports Intel ® Core Ultra Processors (Series 2)
LGA 1851

Memory

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, 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 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.

Slot

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)

Audio

Realtek ^® ALC897 Codec
7.1-Channel High Definition Audio
Supports S/PDIF output

Storage

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.

RAID

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

Onboard Thunderbolt

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

USB

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)

LAN

Intel ^® Killer E5000 5Gbps LAN

Internal IO

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

Wireless LAN & Bluetooth

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.

LED Feature

4x EZ Debug LED
1x EZ Memory Detection LED

Back Panel Ports

DisplayPort

USB 2.0

USB 10Gbps Type-A

5G LAN

Wi-Fi / Bluetooth

Audio Connectors

HDMI

Thunderbolt 4 40Gbps (Type-C)

Flash BIOS Button

Clear CMOS Button

USB 10Gbps Type-C

USB 10Gbps Type-A

S/PDIF-OUT

Operating System

Support for Windows ^® 11 64-bit

Box Content

MSI MAG B860M MORTAR WIFI Motherboard

Quick Installation Guide

European Union Regulatory Notice

Shout-Out Flyer

1 x SATA Cable

EZ M.2 Clips II

EZ M.2 Clip II Remover

EZ Wi-Fi Antenna

1 to 2 EZ Conn-Cable (V1)

EZ Front Panel Cable

PCB Info

mATX
243.84mmx243.84mm