ASRock B860M Steel Legend WiFi Intel LGA1851 Motherboard

The ASRock B860M Steel Legend WiFi delivers robust performance for Intel Core Ultra Processors (Series 2) in a compact Micro-ATX form factor. Built with a 12+1+1+1+1 power phase design featuring 80A SPS for VCore+GT+SA, this motherboard ensures stable power delivery for demanding workloads and gaming sessions.

DDR5 Memory and Expansion

Equipped with 4 DDR5 DIMM slots supporting dual-channel memory up to 8666MHz (OC) with a maximum capacity of 256GB. The board features Intel Extreme Memory Profile (XMP) 3.0 support and compatibility with Clocked Unbuffered DIMM (CUDIMM) for enhanced memory performance. The single PCIe 5.0 x16 slot provides maximum bandwidth for the latest graphics cards.

Storage Configuration

Storage flexibility comes from 1 Blazing M.2 socket with PCIe Gen5 x4 support (128 Gb/s) and 3 Hyper M.2 sockets with PCIe Gen4 x4 capability (64 Gb/s each). All M.2 slots accommodate type 2280 drives and support NVMe SSD boot configurations. Four SATA3 6.0 Gb/s connectors provide additional storage options with RAID 0, 1, 5, and 10 support.

Connectivity and Networking

The rear I/O panel includes Thunderbolt 4 Type-C delivering 40 Gb/s transfer speeds for USB4 and Thunderbolt protocols, plus USB PD 3.0 up to 15W charging. Two USB 3.2 Gen2 Type-A ports (10 Gb/s), four USB 3.2 Gen1 ports, and two USB 2.0 ports ensure comprehensive peripheral connectivity. Network capabilities include Realtek 2.5G LAN with Dragon software optimization and 802.11axe Wi-Fi 6E with Bluetooth 5.3, featuring dual-band 2x2 antenna configuration with extended 6GHz band support.

Display and Audio

Graphics output options include HDMI 2.1 supporting 4K 120Hz with HDR and HDCP 2.3, DisplayPort 1.4 with DSC supporting up to 8K 60Hz, and Thunderbolt 4 Type-C with identical display capabilities. The Realtek ALC1220 7.1 CH HD audio codec with Nahimic Audio enhancement provides premium sound quality with impedance sensing on rear output and individual PCB layers for left/right audio channels.

Cooling and Design Features

Thermal management includes a toolless multi-layer M.2 heatsink with quick-release mechanism and M.2 bottom heatsink for efficient heat dissipation through the PCB. The board supports 2 CPU fan connectors, 4 chassis fan connectors, and 1 AIO pump connector, all with smart fan speed control. ASRock's exclusive 20K capacitors with 1000uF capacitance and 20,000-hour lifespan ensure long-term reliability.

BIOS and Software

The 256Mb AMI UEFI BIOS features GUI support with ASRock EZ Mode and Full HD UEFI interface. BIOS Flashback button enables easy firmware updates without CPU installation. Included software comprises ASRock Motherboard Utility (A-Tuning), Dragon 2.5G LAN Software, and Polychrome SYNC for RGB LED control. The flexible integrated I/O shield simplifies installation.

ASRock B860M Steel Legend WiFi

Key Features
?Supports Intel Core Ultra Processors (Series 2) (LGA1851)
12+1+1+1+1 Power Phase, 80A SPS for VCore+GT+SA
4 x DDR5 DIMMs Supports Dual Channel, up to 8666+ (OC)
1 x PCIe 5.0 x16
Graphics Output Options: 1 x HDMI, 1 x DisplayPort, 1 x Thunderbolt 4 Type-C
Realtek ALC1220 7.1 CH HD Audio Codec, Nahimic Audio
4 x SATA3
1 x Blazing M.2 (PCIe Gen5 x4)
3 x Hyper M.2 (PCIe Gen4 x4)
1 x Thunderbolt 4 Type-C (Rear)
3 x USB 3.2 Gen2 (2 Rear, 1 Front Type-C)
6 x USB 3.2 Gen1 (4 Rear, 2 Front)
6 x USB 2.0 (2 Rear, 4 Front)
Realtek 2.5G LAN
802.11axe Wi-Fi 6E + Bluetooth
Supports BIOS Flashback, M.2 Bottom Heatsink

12+1+1 Power Phase Design
VCore with SPS design, delivering smoother and neater power to the CPU.

Thunderbolt 4 Type-C
It enables lightning-fast data transfer up to 40Gbps and connects versatile devices with a single Thunderbolt 4 cable.

Exclusive 20K Cap with 1000uF Capacitance
Featuring ASRock's exclusive 1000uF capacitor with 20,000 hrs lifespan, ensuring stable and ultimate performance.

Toolless Multi-Layer M.2 Heatsink
Including a quick-release mechanism heatsink for effortless and toolless M.2 SSD installation.

Blazing M.2 (PCIe Gen5x4)
Supports up to 4 x NVMe M.2 SSDs and one of which is able to accommodates the latest PCI Express 5.0 standard.

M.2 Bottom Heatsink
Dissipate heat efficiently through the motherboard PCB, maximize performance while maintaining system stability.

Specifications

Platform
Micro ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm
2oz Copper PCB

Unique Feature
Superb Productivity
PCIe Gen5 (Graphics, M.2)
Dual Channel DDR5
Thunderbolt 4 Type-C Port (40 Gb/s)
Rock-Solid Durability
12+1+1+1+1 Power Phase, 80A SPS for VCore+GT+SA with Enlarged Heatsink Armor
Flexible Integrated I/O Shield
20K Long-lasting Black Caps (high quality and conductive polymer capacitors)
Ultrafast Connectivity
2.5G LAN, 802.11axe Wi-Fi 6E Module
EZ Update
BIOS Flashback Button
ASRock Auto Driver Installer
EZ Troubleshooter

CPU
Supports Intel CoreTM Ultra Processors (Series 2) (LGA1851)
Supports Intel Hybrid Technology
Supports Intel Turbo Boost Max 3.0 Technology
Supports Intel Thermal Velocity Boost (TVB)
Supports Intel Adaptive Boost Technology (ABT)
Integrated NPU for dedicated AI acceleration

Chipset
Intel B860

Memory
Dual Channel DDR5 Memory Technology
4 x DDR5 DIMM Slots
Supports DDR5 non-ECC, un-buffered memory up to 8666+(OC)
1DPC 1R Up to 8666+ MHz (OC), 5600 MHz Natively.
1DPC 2R Up to 6800+ MHz (OC), 5600 MHz Natively.
2DPC 1R Up to 6533+ MHz (OC), 4800 MHz Natively.
2DPC 2R Up to 5600+ MHz (OC), 4400 MHz Natively.
Supports Clocked Unbuffered DIMM (CUDIMM)
Max. capacity of system memory: 256GB
Supports Intel Extreme Memory Profile (XMP) 3.0x

Expansion Slot
CPU:
1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode
Chipset:
1 x M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe WiFi module and Intel
CNVio/CNVio2 (Integrated WiFi/BT)
Supports NVMe SSD as boot disks

Graphics
Intel UHD Graphics Built-in Visuals and the VGA outputs can be supported only with processors which are GPU integrated.
Intel Xe LPG Graphics Architecture
1 x HDMI 2.1 TMDS/FRL 8G Compatible, supports HDR, HDCP 2.3 and max. resolution up to 4K 120Hz
1 x DisplayPort 1.4 with DSC (compressed), supports HDCP 2.3 and max. resolution up to 8K 60Hz / 5K 120Hz
1 x Intel Thunderbolt 4, supports HDCP 2.3 and max. resolution up to 8K 60Hz / 5K 120Hz
Supports two 4K displays or one 8K display
Only the CPU's embedded graphics can be displayed through Thunderbolt ports. If you want to display to a Thunderbolt monitor, please use CPU models with embedded graphics.

Audio
7.1 CH HD Audio with Content Protection (Realtek ALC1220 Audio Codec)
Impedance Sensing on Rear Out port
Individual PCB Layers for R/L Audio Channel
Nahimic Audio

LAN
2.5 Gigabit LAN 10/100/1000/2500 Mb/s
Dragon RTL8125BG
Supports Dragon 2.5G LAN Software
Smart Auto Adjust Bandwidth Control
Visual User Friendly UI
Visual Network Usage Statistics
Optimized Default Setting for Game, Browser, and Streaming Modes
User Customized Priority Control

Wireless LAN
802.11axe Wi-Fi 6E Module
Supports IEEE 802.11a/b/g/n/ac/ax/axe
Supports Dual-Band 2x2 with extended 6GHz band support
Wi-Fi 6E (6GHz band) will be supported by Microsoft Windows 11. The availability will depend on the different regulation status of each country and region. It will be activated (for supported countries) through Windows Update and software updates once available.
A 6GHz compatible router is required for 6E functionality.
2 x antennas to support 2 x (Transmit) x 2 (Receive) diversity technology
Supports Bluetooth 5.3
Supports MU-MIMO

USB
CPU:
1 x Thunderbolt 4 Type-C (Rear)
Chipset:
1 x USB 3.2 Gen2 Type-C (Front)
2 x USB 3.2 Gen2 Type-A (Rear)
6 x USB 3.2 Gen1 (4 Rear, 2 Front)
6 x USB 2.0 (2 Rear, 4 Front)
All USB ports support ESD Protection

Rear Panel I/O
2 x Antenna Ports
1 x HDMI Port
1 x DisplayPort 1.4
1 x Optical SPDIF Out Port
1 x Thunderbolt 4 Type-C Port (40 Gb/s for USB4 protocol; 40Gb/s for Thunderbolt protocol)
2 x USB 3.2 Gen2 Type-A Ports (10 Gb/s)
4 x USB 3.2 Gen1 Ports
2 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
1 x Line Out Jack (Gold Audio Jack)
1 x Microphone Input Jack (Gold Audio Jack)
Supports USB PD 3.0 up to 5V@3A (15W) charging
USB32_34 support Ultra USB Power.

Storage
CPU:
1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode
Chipset:
1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode
1 x Hyper M.2 Socket (M2_3, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode
1 x Hyper M.2 Socket (M2_4, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode
4 x SATA3 6.0 Gb/s Connectors
Supports Intel Volume Management Device (VMD)
Supports NVMe SSD as boot disks

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

Connector
1 x Thermistor Cable Header
1 x SPI TPM Header
1 x Power LED and Speaker Header
1 x RGB LED Header
3 x Addressable LED Headers
2 x CPU Fan Connector (4-pin) (Smart Fan Speed Control)
4 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)
1 x AIO Pump Fan Connector (4-pin) (Smart Fan Speed Control)
1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
2 x 8 pin 12V Power Connectors (Hi-Density Power Connector)
1 x Front Panel Audio Connector
2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen2 Header (10 Gb/s)
Supports in total up to 12V/3A, 36W LED Strip
Support in total up to 5V/3A, 15W LED Strip
CPU_FAN1 supports the fan power up to 1A (12W).
CPU_FAN2, CHA_FAN1~4 and AIO_PUMP support the fan power up to 3A (36W).
CPU_FAN2, CHA_FAN1~4 and AIO_PUMP can auto detect if 3-pin or 4-pin fan is in use.

BIOS Feature
256Mb AMI UEFI Legal BIOS with GUI support

Software and UEFI
Software
ASRock Motherboard Utility (A-Tuning)
ASRock Dragon 2.5G LAN Software
ASRock Polychrome SYNC
UEFI
ASRock EZ Mode
ASRock Full HD UEFI
ASRock My Favorites in UEFI
ASRock Auto Driver Installer
ASRock Instant Flash

OS
Microsoft Windows OS 11 64-bit

Certifications
FCC, CE
ErP/EuP ready (ErP/EuP ready power supply is required)

Accessories
2 x SATA Data Cables
2 x ASRock WiFi 2.4/5/6 GHz Antennas
1 x Thermistor Cable

• Socket: 1851
• CPU Compatibility: Intel Ultra
• Chipset: Intel B860
• Form Factor: Micro ATX
• Memory Slots: DDR5 - 4 Slots
• M.2 Compatibility: PCIe 5 / PCIe 4
• USB C: Yes