MSI MAG B860 Tomahawk Wifi Intel LGA 1851 ATX Motherboard

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/.

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 4.0 supports up to x1 (From Chipset)
PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)

*PCI_E3 slot will run at x2 speed when installing PCIe device in PCI_E2 slot.

3x M.2
M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280 devices
M.2_2 Source (From Chipset) supports up to PCIe 4.0 x4 / SATA mode, supports 22110/2280/2260 devices
M.2_3 Source (From Chipset) supports up to PCIe 4.0 x4 / SATA mode, supports 2280/2260/2242 devices
4x SATA 6G

*If you install a 22110 SSD into the M2_2 slot, the M2_3 slot will only support 2242/ 2260 SSD.
**Please refer to the manual for M.2 SSD heatsink restrictions.

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.