The MSI MAG B860 Tomahawk WiFi uses a single LGA 1851 socket paired with the B860 chipset and follows the standard ATX form factor, measuring 304.8 mm wide by 243.8 mm tall. It does not include an integrated CPU or onboard graphics, so a discrete processor and GPU are required. Wireless connectivity is well covered, with built-in support spanning Wi-Fi 4 through Wi-Fi 7 (802.11be) alongside Bluetooth 5.4, though aptX audio codec support is absent. The board features RGB lighting, a dual BIOS for firmware resilience, a clear CMOS button for easy BIOS resets, and is noted as straightforward to overclock. Video output is handled via an HDMI 2.1 port, and the board carries a 3-year warranty.
The board supports DDR5 memory across four slots arranged in a dual-channel configuration, with a maximum capacity of 256 GB. Standard rated speeds reach up to 6400 MHz, while overclocking can push that figure to 9200 MHz. ECC memory is not supported, making this configuration suited to consumer rather than workstation or server use cases.
The rear panel offers a broad range of connectivity, starting with four USB 3.2 Gen 2 Type-A ports and four USB 2.0 ports for general peripherals, alongside one USB 3.2 Gen 2 Type-C port. High-speed options include one USB 4 40Gbps port and one Thunderbolt 4 port, while USB 3.2 Gen 1, USB 3.2 Gen 2x2, USB 4 20Gbps, and Thunderbolt 3 are absent. Display output is handled by an HDMI port and one DisplayPort, with no DVI or VGA connectors present. Networking is covered by a single RJ45 port, and there are no eSATA or PS/2 ports on this board.
Internal connectivity is well provisioned, with three M.2 sockets and four SATA 3 connectors available for storage devices, while SATA 2, mSATA, and U.2 options are not present. USB expansion headers include two USB 3.2 Gen 1 ports, two USB 3.0 ports, one USB-C 3.2 Gen 2 port, and four USB 2.0 ports, all accessible through case or accessory connections. Cooling is supported by seven fan headers, and a TPM connector is included for security module use.
The board provides two PCIe 5.0 x16 slots as its primary expansion options, complemented by a single PCIe x1 slot for smaller add-in cards. There are no PCIe 4.0, 3.0, or 2.0 x16 slots, and no PCIe x4, x8, or legacy PCI slots are present, keeping the layout focused on current-generation high-bandwidth expansion.
The board supports 7.1-channel audio output and includes an S/PDIF Out port for digital audio passthrough to external receivers or DACs. Physical audio connectivity is provided through two onboard audio connectors.
The board supports RAID 0, 1, 5, and 10 (1+0) configurations, covering a range of performance and redundancy setups for multi-drive arrays. RAID 0+1 is not supported.