MSI PRO B860M-B
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MSI PRO B860M-B

  • Support Intel® Core™ Ultra Processors (Series 2) for LGA 1851 socket
  • Supports DDR5 Memory, Dual Channel DDR5 9066+ MT/s (OC)
  • Ultra Performance: Direct 6 phases with P-PAK, 8-pin CPU power connector, Core Boost, Memory Boost, 6-layer PCB
  • Frozr Guard: Extended Heatsink, MOSFET thermal pads rated for 7W/mK, additional choke thermal pads and M.2 Shield Frozr are built for high performance system and non-stop experience
  • EZ DIY: EZ M.2 Clip II and EZ PCIe Clip II
  • Lightning Fast Game experience: PCIe 5.0 slot and Lightning Gen 5 x4 M.2
  • Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience
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Specification Details
Chipset Intel B860
CPU Supports Intel Core Ultra Processors (Series 2)
Socket LGA 1851
Memory
Configuration 2x DDR5 UDIMM, Maximum Memory Capacity 128GB
Memory Support DDR5 9066 – 6400 (OC) MT/s / 6400 – 4800 (JEDEC) MT/s
Max Overclocking Frequency 1DPC 1R: Up to 9066+ MT/s
1DPC 2R: Up to 7200+ MT/s
Features 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
Notes The DIMM slots on this motherboard have double-sided latches.
Memory compatibility and supported speeds depend on the CPU and configuration.
See the Memory Compatibility List on MSI Support for details.
Onboard Graphics
Ports 1x HDMI
Supports HDMI 2.1, maximum resolution 4K 60Hz*
1x DisplayPort
Supports DisplayPort 1.4, maximum resolution 4K 60Hz*
*Available only on processors with integrated graphics. Specifications vary by CPU.
Expansion Slots
Slots 1x 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)
Audio
Codec Realtek ALC897 Codec
Channels 7.1-Channel High Definition Audio
Storage
Configuration 2x M.2
M.2_1 (From CPU): PCIe 5.0 x4, supports 2280/2260/2242 devices
M.2_2 (From Chipset): PCIe 4.0 x4, supports 2280/2260 devices
4x SATA 6G
Notes * Refer to the motherboard manual for M.2 SSD heatsink installation restrictions.
USB
Configuration 4x USB 2.0 (Rear)
4x USB 2.0 (Front)
2x USB 5Gbps Type-A (Rear)
2x USB 5Gbps Type-A (Front)
1x USB 10Gbps Type-C (Front)
1x USB 20Gbps Type-C (Rear)
LAN
Port Realtek 8126 5Gbps LAN
Internal I/O
Connectors 1x ATX Power (ATX_PWR)
1x CPU Power (CPU_PWR)
1x CPU Fan
2x System Fans
2x Front Panels (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
1x COM Port (JCOM)
1x Tuning Controller Connector (JDASH)
3x Addressable V2 RGB (JARGB_V2)
1x RGB LED (JRGB)
1x TPM Header (Supports TPM 2.0)
4x USB 2.0 Ports
2x USB 5Gbps Type-A Ports
1x USB 10Gbps Type-C Port
LED Features
Indicators 4x EZ Debug LED
1x EZ Memory Detection LED
Back Panel Ports
Configuration

  1. DisplayPort
  2. Clear CMOS Button
  3. USB 20Gbps Type-C
  4. USB 2.0
  5. 5G LAN
  6. Audio Connectors
  7. HDMI™
  8. USB 5Gbps Type-A
Operating System
Support Windows 11 64-bit
Box Content
INCLUDES
PCB INFO
mATX
220mmx243.84mm

Overview

MSI PRO B860M-B

The MSI PRO B860M-B is a dependable and efficient motherboard built for users who need strong performance, modern features, and long-term stability in a compact micro-ATX form factor. Powered by support for Intel® Core™ Ultra (Series 2) processors on the LGA 1851 socket, it delivers smooth computing for professional workloads, multitasking, and everyday productivity. With dual-channel DDR5 support up to 9066+ MT/s (OC), the board ensures ultra-fast memory performance, improved efficiency, and a noticeably responsive system experience.

To maintain stable power delivery, the motherboard features a direct 6-phase power design with P-PAK components, along with an 8-pin CPU power connector, Core Boost, and Memory Boost technologies. This setup ensures reliable operation even during heavy tasks. The durable 6-layer PCB enhances system stability, signal integrity, and thermal performance for long-term use.

Cooling and reliability are strengthened by Frozr Guard, which includes an extended heatsink, 7W/mK MOSFET thermal pads, extra choke thermal pads, and M.2 Shield Frozr to keep NVMe SSDs running at full speed without throttling. For easier installation and quick upgrades, the board comes with EZ M.2 Clip II and EZ PCIe Clip II, making the building process smoother and stress-free.

When it comes to speed, the board offers a PCIe 5.0 slot and Lightning Gen 5 x4 M.2, enabling next-gen GPU compatibility and blazing-fast storage performance. Networking is equally strong with 5G LAN, delivering fast, stable, and secure connections suitable for professionals, content creators, and heavy data users. Rounding out the experience, Audio Boost provides clean, immersive, studio-grade sound for both work and entertainment.

Product Datasheet

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