MSI Pro B860M-A WiFi6E DDR5 Motherboard
Pro B860M-A
PRO B860M-A WIFI6E offers a simple design with a harmonious silver color scheme that perfectly matches both white and black PC builds. It is engineered with many exclusive features of MSI, a Wi-Fi 6E with EZ Antenna, 5G LAN, and PCIe 5.0 M.2, ready for the Intel Core Ultra processors.
EZ PCIE CLIP II
The new EZ PCIe Clip II, located on the first slot, features the rebounding force mechanism that allows for easy removal of the graphics card by pressing the tail-like lock with one finger. Due to this exquisite design, users can uninstall the graphics cards effortlessly, even in the cramped case spaces.
PRE-INSTALLED I/O SHIELD
The Pre-Installed I/O Shield offers a streamlined and hassle-free installation experience by eliminating the need to manually fit the I/O shield during motherboard setup. With its built-in design, it ensures proper alignment and a secure fit, providing both protection and convenience while enhancing the overall durability of your build.
POWER DESIGN
Unleash and sustain the maximum performance with a flagship VRM design built with a total of 12+1+1+1 digital power phases. With 8+4 pin power connectors, PRO B860M-A WIFI6E is ready for the challenge of high-end processors.
PCB DESIGN
MSI utilizes PCB Fabric Technology to enhance signal performance, resulting in higher bandwidth and faster data transfer while minimizing signal loss. The PCB Fabric Technology also offers better impedance control and improved thermal stability, allowing the boards to endure demanding conditions. Due to the high-quality materials used, MSI motherboards are highly reliable and well-suited for the requirements of modern technology.
MEMORY
A huge step of DDR performance enhancement with the latest DDR5 memory. Combines with dedicated SMT welding process and MSI Memory Boost technology, PRO B860M-A WIFI6E is ready to deliver the world class memory performance.
MEMORY EXTENSION MODE
Memory Extension Mode provides optimized memory parameters for enhanced capability at the same frequency, achieving lower latency and higher performance. Furthermore, Memory Extension Mode can combine XMP profiles to maximize memory frequency, enabling users to effortlessly discover the best configuration based on their requirements.
TVS
Transient Voltage Suppressors (TVS) are safety devices used to protect against excessive voltage. All motherboard models of MSI are equipped with TVS. When the voltage abnormally rises, the TVS switches from a high-resistance state to a low-resistance state, diverting the excessive voltage to ground. This helps prevent circuit damage caused by high voltage.
SOLID PIN DESIGN
The 8-pin, 8-pin, and 24-pin power connectors of MSI motherboards are all designed with solid pins. The solid pin design allows for a more stable transmission of 12V power to the CPU, even when handling high current loads.
STAINLESS STEEL IO
An extra layer of sponge materials along with corrosive resistance IO Shield to help improve static electricity and reduce electromagnetic radiation noise from the system as well as much more durable compare to traditional IO Shields.
OCP PROTECTION
MSI motherboards prioritize safety with the embedded Overcurrent Protection (OCP), ensuring crucial components such as the USB ports, DDR memory, PWM IC, and CPU are shielded from excessive current. This proactive defense mechanism curtails the risk of damage or malfunction due to power surges, promoting long-term system stability. This commitment to safeguarding your hardware underscores MSI’s dedication to producing motherboards that prioritize durability and stability.
Extended Heatsink
Extended Heatsink enlarges the surface of heat dissipation and maintain the performance at heavy loads.
Heavy Plated VRM Heatsink
The VRM heatsink covers the upper MOS and helps dissipate the heat
7W/mK Thermal Pad & Additional Choke Pad
High-quality 7W/mK MOSFET thermal pads and additional choke thermal pads ensure stable performance when all cores are runnging at high speed
M.2 Shield Frozr
Strengthened M.2 thermal solution helps keep M.2 SSD safe and ensures incredible performance.
Chipset Heatsink
The PCH heatsink is designed to reduce dust and noise and capable of maintaining high efficiency of heat dissipation.
Specifications:
| Model Number | PRO B850-S WIFI6E |
| CHIPSET | B860 |
| CPU | Supports Intel® Core™ Ultra Processors (Series 2) LGA 1851 Memory 4x DDR5 UDIMM, Maximum Memory Capacity 256GB Memory Support DDR5 8800 – 6400 (OC) MT/s / 6400 – 4800 (JEDEC) MT/s Max. overclocking: 1DPC 1R Max speed up to 8800+ 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 |
| MEMORY | 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 |
| AUDIO | Realtek® ALC897 Codec 7.1-Channel High Definition Audio |
| 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 x2 , supports 2280 devices 4x SATA 6G. |
| ONBOARD GRAPHICS | 1x HDMI™ Support HDMI™ 2.1, maximum resolution of 4K 60Hz* 1x DisplayPort Support DisplayPort 1.4, maximum resolution of 4K 60Hz* |
| SLOT | 4x PCI-E x16 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 x1 (From Chipset) PCI_E4 Gen PCIe 4.0 supports up to x4 (From Chipset) |
| USB | 2x USB 2.0 (Rear)4x USB 2.0 (Front) 2x USB 5Gbps Type A (Rear) 1x USB 5Gbps Type C (Rear) 4x USB 5Gbps Type A (Front) 1x USB 10Gbps Type A (Rear) 1x USB 10Gbps Type C (Front) |
| WIRELESS LAN & BLUETOOTH | Wi-Fi 6E The Wireless module is pre-installed in the M.2 (Key-E) slot Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (160MHz) up to 2.4Gbps Supports 802.11 a/ b/ g/ n/ ac/ ax Supports Bluetooth® 5.3**, FIPS, FISMA 6GHz band support may depend on every country’s regulations and Wi-Fi 6E requires Windows 11. ** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor’s website for details. |
| 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) 3x System Fan 2x Front Panel (JFP) 1x Chassis Intrusion (JCI) 1x Front Audio (JAUD) 1x Com Port (JCOM) 1x Tuning Controller connector(JDASH) 2x 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 4x USB 5Gbps Type A ports 1x USB 10Gbps Type C ports |
| LED FEATURE | 4x EZ Debug LED 1x EZ Memory Detection LED |
| BACK PANEL PORTS | Clear CMOS Button DisplayPort 2.5G LAN USB 10Gbps Type-A USB 5Gbps Type-A Wi-Fi / Bluetooth Audio Connectors Flash BIOS Button HDMI™ USB 10Gbps Type-A USB 10Gbps Type-C |
| OPERATING SYSTEM | Support for Windows® 11 64-bit |
| PCB INFO | mATX 243.84mmx243.84mm |
| Warranty | 3 Years |







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