ASROCK B860M Steel Legend WiFi

ASROCK B860M Steel Legend WiFi
The ASROCK B860M Steel Legend WiFi motherboard, with its Intel B860 chipset and LGA1851 socket, features an advanced 12+1+1+1+1 phase power design with 80A SPS technology for maximum stability and performance with Intel Core Ultra Series 2 processors. This Micro ATX board supports four DDR5 memory modules with overclocking up to 8666MHz, a PCIe 5.0 slot for graphics cards, and five M.2 slots, including an ultra-fast Blazing M.2 with PCIe Gen5 standard and comprehensive connectivity that includes Thunderbolt 4, Wi-Fi 6E, and 2.5Gb LAN. Cooling is managed by an aluminium VRM heatsink, large M.2 heatsinks, and a screwless mounting system, while the 7.1-channel Realtek ALC1220 HD audio codec with Nahimic Audio technology delivers a high-quality sound experience.
Key features of the ASROCK B860M Steel Legend WiFi motherboard
- Support for Intel Core Ultra Series 2 processors on an LGA1851 socket with Intel Hybrid Technology and Turbo Boost Max 3.0
- 12-phase power design with Smart Power Stage technology and 80A SPS with large aluminium VRM heatsinks
- Dual Channel DDR5 architecture with four DIMM slots and overclocking support up to 8666MHz via Intel XMP 3.0 profiles
- PCIe 5.0 storage with a Blazing M.2 socket reaching 128Gb/s and three additional M.2 slots with PCIe Gen4 standard
- Thunderbolt 4/USB4 Type-C port with a 40Gb/s transfer speed, USB PD 3.0 charging support, and the ability to connect an 8K display
- Wi-Fi 6E with an extended 6GHz band and Dragon 2.5G LAN, ensuring 2.5× higher throughput than standard gigabit connections
- Advanced cooling system with large M.2 heatsinks, a screwless mounting mechanism, and bottom M.2 heatsinks that dissipate heat through the PCB
Powerful performance and memory
The board uses a 12+1+1+1+1 phase power design with Dr.MOS and Smart Power Stage technology, which monitors the current and temperature of each phase. High-quality 20K capacitors and a dual-layer copper PCB contribute to high stability, ensuring stable signal paths and greater energy efficiency. Four DDR5 DIMM slots support a Dual Channel configuration with a maximum capacity of 256GB and overclocking up to 8666MHz using Intel XMP 3.0 profiles.
Storage and cooling
The board offers one Blazing M.2 socket with PCIe Gen5x4 standard (128Gb/s), three Hyper M.2 sockets with PCIe Gen4x4 (64Gb/s), and four SATA3 connectors. All M.2 slots are equipped with large aluminium heatsinks and a screwless mounting system. The bottom M.2 heatsink dissipates heat through the PCB. A steel-reinforced PCIe 5.0 x16 slot ensures the secure installation of heavy graphics cards.
Connectivity and audio
The motherboard is equipped with a Thunderbolt 4/USB4 Type-C port, which enables data transfers at speeds of up to 40Gb/s and supports USB PD 3.0 charging up to 15W. The Wi-Fi 6E module, which uses the 6GHz spectrum, provides wireless connectivity with MU-MIMO technology and Bluetooth 5.3. Dragon 2.5G LAN delivers higher throughput than standard gigabit ethernet. The Realtek ALC1220 HD audio codec, with separate PCB layers for the left and right channels, supports Nahimic Audio technology. Graphics outputs include HDMI 2.1 with support for 4K resolution at 120Hz, DisplayPort 1.4 with up to 8K resolution at 60Hz, and a Thunderbolt 4 port that allows you to connect two 4K displays.
Port layout
Storage
- Number of SATA III: 4
- Number of M.2: 4
- M.2 Slot 1 - M.2 PCI-E NVMe Gen5
- 3× M.2 Slot 2 - M.2 PCI-E NVMe Gen4
- Features: RAID 0, RAID 1, RAID 5, RAID 10
USB ports
- Internal USB 2.0: 4
- Internal USB 3.2 Gen 1: 2
- Internal USB-C 3.2 Gen 2: 1
- Rear USB 2.0: 2
- Rear USB 3.2 Gen 1: 4
- Rear USB 3.2 Gen 2: 2
- Rear Thunderbolt 4: 1
Graphics
- HDMI 2.1
- DisplayPort 1.4
- Graphics outputs: HDMI, DisplayPort, Thunderbolt
Sound
- Number of channels: 7.1
- Rear connectors: 2× 3.5mm (Line Out, Microphone In), Optical S/PDIF
Other
- Rear: BIOS Flashback, 2× Wi-Fi antenna
- Power supply: 24-pin, 2× 8-pin
- Cooling: number of PWM FAN (4-pin) - 6, Water pump - 1
- Internal: RGB LED Header (1×), Addressable RGB LED Header (3×), TPM header, Thermistor Cable Header
Specifications
Format & functions
Memory
Advanced parameters
Connectors
Compatibility
Colour
This product is not an independently functional unit and may require professional installation.
Specifications can be changed without notice. Images are for illustrative purposes only.

