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ASRock B860M Lightning WiFi specifications and in-depth review

ASRock B860M Lightning WiFi

Manufacturer: ASRock

The ASRock B860M Lightning WiFi is a Micro-ATX motherboard built around Intel's B860 chipset and the LGA 1851 socket, targeting users who want a compact yet well-equipped platform for current-generation Intel processors. It includes built-in Wi-Fi 6E and Bluetooth 5.3, RGB lighting, and dual BIOS for added reliability. The board carries a three-year warranty and measures 244 mm × 244 mm, fitting neatly into standard Micro-ATX cases.

On the connectivity side, the board offers a Thunderbolt 4 port alongside a USB 4 40Gbps port, two USB 3.2 Gen 2 Type-A ports, four USB 3.2 Gen 1 Type-A ports, and two USB 2.0 ports at the rear. It supports DDR5 memory across four slots with a maximum capacity of 256 GB, reaching up to 5600 MHz natively or 8666 MHz when overclocked, operating in dual-channel mode. Storage options include four M.2 sockets, four SATA 3 connectors, and full RAID support for levels 0, 1, 5, and 10. A single PCIe 5.0 x16 slot handles discrete graphics, while the audio subsystem delivers a 120 dB signal-to-noise ratio with 7.1-channel output and an S/PDIF port.

Pros
  • Four M.2 sockets provide ample high-speed storage expansion for a Micro-ATX board
  • Thunderbolt 4 and USB 4 40Gbps port offer fast external device connectivity rarely seen at this form factor
  • Wi-Fi 6E support enables use on the 6 GHz band for lower-latency wireless connections
  • Dual BIOS adds a layer of resilience against failed firmware updates
  • Seven fan headers give considerable flexibility for cooling configurations inside the case
  • Overclocked DDR5 support up to 8666 MHz allows significant memory tuning headroom
Cons
  • No USB-C ports on the rear I/O outside of the Thunderbolt 4 connection, limiting direct Type-C device hookup options
  • Manual CMOS reset is not supported, making BIOS recovery more cumbersome in certain situations
  • Only a single PCIe x16 slot with no additional PCIe lanes means no room for secondary expansion cards
  • ECC memory is not supported, ruling out error-correcting configurations
  • No aptX Bluetooth audio codec support despite Bluetooth 5.3 being present
Who is this for?

This board suits builders who need a compact Micro-ATX system without sacrificing modern connectivity, making it a solid fit for home workstations or media-focused desktop builds where Wi-Fi 6E, Thunderbolt 4, and 7.1-channel audio all see practical use. The four M.2 sockets and full RAID 0, 1, 5, and 10 support make it equally relevant for users managing multi-drive storage setups, such as content creators or small office environments that rely on redundant or high-throughput local storage. The seven fan headers and DDR5 overclocking headroom up to 8666 MHz also cater well to enthusiasts who want meaningful thermal and memory tuning within a smaller chassis footprint.

Who is this NOT for?

Users who require more than one expansion slot will find this board limiting, as the single PCIe 5.0 x16 slot leaves no room for adding secondary cards such as a dedicated capture card or additional networking adapter alongside a discrete GPU. It is also unsuitable for workstation or server use cases requiring ECC memory, since that capability is absent entirely. Those who depend on a broad selection of rear USB-C ports for peripherals or displays may also find the I/O arrangement restrictive, given that all standard USB-C connectivity at the rear is consolidated into the single Thunderbolt 4 port with no additional Type-C outputs present.

General info:

CPU socket LGA 1851
chipset B860
form factor Micro-ATX
supports Wi-Fi ✓
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax)
Has Bluetooth ✓
Bluetooth version 5.3
HDMI version HDMI 2.1
Easy to overclock ✓
has RGB lighting ✓
Easy to reset BIOS ✕
Has dual BIOS ✓
has aptX ✕
CPU sockets 1
Has integrated graphics ✕
warranty period 3 years
height 244 mm
width 244 mm
Has integrated CPU ✕

The ASRock B860M Lightning WiFi is built on the B860 chipset and uses the LGA 1851 socket, fitting into a Micro-ATX form factor measuring 244 mm × 244 mm with a single CPU socket and no integrated processor or onboard graphics. Wireless connectivity is handled by a built-in adapter covering Wi-Fi 4, Wi-Fi 5, Wi-Fi 6, and Wi-Fi 6E, complemented by Bluetooth 5.3, though aptX audio codec support is not included. The board features RGB lighting, dual BIOS for recovery purposes, and supports easy overclocking, while manual CMOS reset is not available. Video output is provided via an HDMI 2.1 port, and the board carries a three-year warranty.

Memory:

maximum memory amount 256GB
RAM speed (max) 5600 MHz
overclocked RAM speed 8666 MHz
memory slots 4
DDR memory version 5
memory channels 2
Supports ECC memory ✕

The board supports DDR5 memory across four slots in a dual-channel configuration, with a maximum capacity of 256 GB. Native RAM speeds reach up to 5600 MHz, while overclocked configurations can push that figure to 8666 MHz. ECC memory is not supported.

Ports:

USB 3.2 Gen 2 ports (USB-A) 2
USB 3.2 Gen 1 ports (USB-A) 4
USB 3.2 Gen 2 ports (USB-C) 0
USB 3.2 Gen 1 ports (USB-C) 0
USB 2.0 ports 2
USB 3.2 Gen 2x2 ports 0
USB 4 40Gbps ports 1
USB 4 20Gbps ports 0
Thunderbolt 4 ports 1
Thunderbolt 3 ports 0
has an HDMI output ✓
DisplayPort outputs 1
RJ45 ports 1
Has USB Type-C ✓
eSATA ports 0
DVI outputs 0
has a VGA connector ✕
PS/2 ports 0

The rear I/O panel includes a Thunderbolt 4 port alongside a USB 4 40Gbps port, both delivered via USB-C, making it the high-bandwidth highlight of the port lineup. Additional USB connectivity consists of two USB 3.2 Gen 2 Type-A ports, four USB 3.2 Gen 1 Type-A ports, and two USB 2.0 ports; there are no USB 3.2 Gen 2 or Gen 1 Type-C ports, no USB 4 20Gbps port, and no USB 3.2 Gen 2x2 output. Display outputs cover HDMI and one DisplayPort, while VGA, DVI, eSATA, and PS/2 connectors are absent. Networking is handled by a single RJ45 port.

Connectors:

USB 3.2 Gen 1 ports (through expansion) 2
USB-C 3.2 Gen 2 ports (through expansion) 1
USB 2.0 ports (through expansion) 4
SATA 3 connectors 4
fan headers 7
USB 3.0 ports (through expansion) 2
M.2 sockets 4
Has TPM connector ✓
U.2 sockets 0
Has mSATA connector ✕
SATA 2 connectors 0

For internal expansion, the board provides four M.2 sockets and four SATA 3 connectors for storage, with no SATA 2, U.2, or mSATA options present. USB headers allow for additional ports via case panels or adapters, including two USB 3.2 Gen 1 headers, two USB 3.0 headers, one USB-C 3.2 Gen 2 header, and four USB 2.0 headers. Cooling is well catered for with seven fan headers on board, and a TPM connector is also included for security module support.

Expansion slots:

PCIe 4.0 x16 slots 0
PCIe 5.0 x16 slots 1
PCIe 3.0 x16 slots 0
PCIe x1 slots 0
PCI slots 0
PCIe 2.0 x16 slots 0
PCIe x4 slots 0
PCIe x8 slots 0

The board offers a single PCIe 5.0 x16 slot as its sole expansion option, intended for a discrete graphics card or other full-length PCIe device. No PCIe 4.0, 3.0, or 2.0 x16 slots are present, and there are no PCIe x8, x4, or x1 slots, nor any legacy PCI slots.

Audio:

Signal-to-Noise ratio (DAC) 120 dB
audio channels 7.1
Has S/PDIF Out port ✓
audio connectors 2

The onboard audio supports 7.1-channel output and delivers a DAC signal-to-noise ratio of 120 dB, indicating a clean audio signal with minimal background noise. Two analog audio connectors are available on the rear panel, and an S/PDIF Out port is included for digital audio passthrough to external receivers or DACs.

Storage:

Supports RAID 1 ✓
Supports RAID 10 (1+0) ✓
Supports RAID 5 ✓
Supports RAID 0 ✓
Supports RAID 0+1 ✕

The board supports RAID 0, 1, 5, and 10 configurations, covering the most common setups for both performance-focused and redundancy-oriented storage arrangements. RAID 0+1 is not supported.

Final Verdict

The ASRock B860M Lightning WiFi delivers a well-rounded feature set for a Micro-ATX board, bringing together Wi-Fi 6E, Bluetooth 5.3, dual BIOS, and an impressive storage configuration with four M.2 sockets and broad RAID support into a compact 244 mm × 244 mm footprint. Its standout connectivity highlight — Thunderbolt 4 alongside USB 4 40Gbps — sets it apart from typical boards in this form factor, and the DDR5 platform with overclocking support up to 8666 MHz adds meaningful long-term headroom. The trade-off is a constrained expansion layout with a single PCIe slot and limited rear USB-C options, which narrows its appeal for users with more complex peripheral or multi-card requirements. For builders seeking a feature-dense, space-efficient system built around the LGA 1851 platform, this board represents a capable and thoughtfully equipped choice.

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