MSI MAG B860 TOMAHAWK WIFI LGA 1851 DDR5 Motherboard

CPU Support

• Intel® Core™ Ultra Processors (Series 2)

Memory

• Slots: 4 × DDR5 UDIMM
• Max Capacity: 256 GB (64 GB per slot)
• Architecture: Dual-Controller Dual-Channel mode
• Supported Types: Non-ECC, unbuffered DDR5
• JEDEC Speeds: 4800 – 6400 MT/s
• Overclocked (OC) Speeds:
  • 1DPC 1R: Up to 9200+ MT/s
  • 1DPC 2R: Up to 7200+ MT/s
  • 2DPC 1R: Up to 6400+ MT/s
  • 2DPC 2R: Up to 5600+ MT/s
• Features:
  • Intel® XMP 3.0 support
  • CUDIMM support
  • Single-sided DIMM latches

Onboard Graphics (via CPU)

• HDMI™: 1 × HDMI 2.1 with FRL (up to 8K @ 60Hz)
• DisplayPort: 1 × DP 1.4 (up to 4K @ 60Hz)
• USB-C DisplayPort: 1 × Thunderbolt™ 4 (supports DisplayPort 2.1 UHBR20, up to 8K @ 60Hz or 4K @ 120Hz)

Expansion Slots

• PCI_E1 (from CPU): PCIe 5.0 x16
• PCI_E2 (from chipset): PCIe 4.0 x1
• PCI_E3 (from chipset): PCIe 4.0 x4 (drops to x2 if PCI_E2 is populated)

Storage

• M.2 Slots:
  • M.2_1 (CPU): PCIe 5.0 x4, supports 2280/2260
  • M.2_2 (Chipset): PCIe 4.0 x4, supports 22110/2280/2260
  • M.2_3 (Chipset): PCIe 4.0 x4, supports 2280/2260/2242
• SATA Ports: 4 × SATA 6Gb/s
• RAID Support: RAID 0, 1, 5, 10 (for SATA drives only)

Audio

• Codec: Realtek® ALC897
• Channels: 7.1-channel HD Audio
• Digital Output: S/PDIF-out (optical/coaxial via rear port)

Networking

• Wired LAN: Intel® Killer™ E5000 5 Gigabit Ethernet
• Wireless:
  • Wi-Fi 7 (802.11be, tri-band: 2.4/5/6 GHz, up to 5.8 Gbps, 320 MHz channels)
  • Bluetooth: 5.4
  • Module pre-installed in M.2 (Key-E) slot

Thunderbolt™ 4

• Ports: 1 × rear Thunderbolt™ 4 (USB-C)
• Features:
  • Up to 40 Gbps (Thunderbolt), 20 Gbps (USB4), 10 Gbps (USB 3.2)
  • Supports 8K display output
  • 15W power delivery (5V/3A)
  • Daisy-chain: up to 3 Thunderbolt 4 or 5 Thunderbolt 3 devices

USB Ports

• USB 10Gbps (USB 3.2 Gen 2): 4 × Type-A
• USB 10Gbps Type-C: 1
• USB 40Gbps (USB4 / Thunderbolt 4): 1 × Type-C
• USB 2.0: 4 × (one labeled Flash BIOS Port)

• USB 10Gbps Type-C: 1
• USB 5Gbps Type-A: 2
• USB 2.0: 4

Internal Connectors

• Power:
  • 1 × 24-pin ATX
  • 2 × 8-pin CPU
  • 1 × 8-pin PCIe (for high-end GPUs)
• Cooling:
  • 1 × CPU fan
  • 1 × Pump/Sys combo fan
  • 5 × System fans
• Lighting:
  • 3 × Addressable RGB V2 (5V 3-pin)
  • 2 × Standard RGB (12V 4-pin)
• Other:
  • TPM 2.0 header
  • Front panel, audio, chassis intrusion
  • JDASH tuning controller connector

Back Panel I/O

• HDMI™
• DisplayPort
• Thunderbolt™ 4 (40Gbps USB-C)
• USB 10Gbps Type-A ×4
• USB 10Gbps Type-C ×1
• USB 2.0 ×4 (including Flash BIOS port)
• 5G LAN (RJ45)
• Wi-Fi / Bluetooth antennas
• 3.5mm audio jacks
• S/PDIF-out
• Flash BIOS Button
• Clear CMOS Button

Diagnostics & Features

• EZ Debug LEDs: 4 (CPU, DRAM, VGA, BOOT)
• EZ Memory Detection LED: Yes

Form Factor & OS Support

• Form Factor: ATX (243.84 × 304.8 mm)
• Operating System: Windows® 11 64-bit