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Asus B860M-BRO specifications and in-depth review

Asus B860M-BRO

Manufacturer: Asus

The Asus B860M-BRO is a Micro-ATX motherboard designed around Intel's LGA 1851 platform, pairing the B860 chipset with a compact 244 × 222 mm footprint that suits space-conscious builds without sacrificing core functionality. It ships with a three-year warranty and includes conveniences like a dedicated CMOS reset mechanism and dual BIOS, giving users a straightforward path to recovery should a firmware update go wrong.

Memory support centers on two DDR5 slots capable of holding up to 128 GB in dual-channel configuration, with overclocked speeds reaching 8800 MHz. Storage options include four SATA 3 connectors alongside two M.2 sockets, with full support for RAID 0, 1, 5, and 10 arrays. On the connectivity side, the rear panel provides one USB 3.2 Gen 2 Type-A port, two USB 3.2 Gen 1 Type-A ports, three USB 2.0 ports, a single RJ45 jack, HDMI 1.4 output, a VGA connector, and three audio jacks serving a 7.1-channel audio setup. Expansion is handled by one PCIe 4.0 x16 slot and two PCIe x1 slots, while internal headers add further USB flexibility through additional USB 3.2 Gen 1 and USB 2.0 expansion headers.

Pros
  • Dual BIOS provides a built-in fallback for failed firmware updates, reducing the risk of a bricked board
  • Supports RAID 0, 1, 5, and 10, giving users meaningful flexibility in how they configure storage redundancy
  • DDR5 memory with overclocked speeds up to 8800 MHz allows for high-bandwidth memory configurations
  • Two M.2 sockets alongside four SATA 3 connectors offer a solid mix of fast and conventional storage options
  • Three-year warranty provides a reasonable coverage period for a platform-level component
  • Easy CMOS reset simplifies BIOS recovery without requiring additional tools or hardware
Cons
  • No USB Type-C ports on the rear panel limits compatibility with newer peripherals and devices
  • Only two memory slots restricts future upgrade paths, as the board is already at maximum slot capacity once both are filled
  • No Wi-Fi or Bluetooth built in, requiring separate adapters for wireless connectivity
  • Absence of a TPM connector may be a drawback for users with security or enterprise requirements
  • With only three fan headers, more complex cooling setups may require a separate fan hub
  • No DisplayPort output on the rear panel limits display connectivity options for users who rely on that interface
Who is this for?

This board is a practical choice for users building a compact desktop system on Intel's LGA 1851 platform who don't need wireless connectivity built in. Its Micro-ATX form factor suits small-to-mid-sized cases, while the dual BIOS and easy CMOS reset make it a sensible pick for enthusiasts who enjoy tinkering with firmware or overclocking settings without worrying about recovery complications. The support for RAID 0, 1, 5, and 10 also makes it well-suited to users who want to set up a redundant or performance-oriented storage array at home or in a small office environment, and the two M.2 sockets combined with four SATA 3 ports accommodate a variety of storage configurations without forcing a single approach.

Who is this NOT for?

Users who depend on wireless connectivity will find this board limiting, as neither Wi-Fi nor Bluetooth is included, requiring additional hardware to achieve either. The board is also a poor fit for those building high-end workstations or content creation rigs that need extensive peripheral support, since the rear panel lacks USB Type-C and offers no Thunderbolt connectivity of any kind. Additionally, with only two memory slots, anyone planning to start small and gradually expand RAM capacity will hit a ceiling quickly, making it less appropriate for memory-intensive workflows where incremental upgrades over time are part of the plan.

General info:

CPU socket LGA 1851
chipset B860
form factor Micro-ATX
supports Wi-Fi ✕
Has Bluetooth ✕
HDMI version HDMI 1.4
Easy to overclock ✓
has RGB lighting ✕
Easy to reset BIOS ✓
Has dual BIOS ✓
CPU sockets 1
Has integrated graphics ✕
warranty period 3 years
height 222 mm
width 244 mm
Has integrated CPU ✕

The Asus B860M-BRO is built around the LGA 1851 socket and is compatible with the B860 chipset, housed in a Micro-ATX form factor measuring 244 × 222 mm. It accommodates a single CPU and does not include an integrated CPU or integrated graphics. The board supports easy overclocking and features a dual BIOS along with a straightforward CMOS reset mechanism, making firmware management more forgiving. Neither Wi-Fi nor Bluetooth is built in, and the board forgoes RGB lighting entirely. Video output is available via an HDMI 1.4 port, and the product is backed by a three-year warranty.

Memory:

maximum memory amount 128GB
overclocked RAM speed 8800 MHz
memory slots 2
DDR memory version 5
memory channels 2
Supports ECC memory ✕

This board supports DDR5 memory across two slots arranged in a dual-channel configuration, with a maximum supported capacity of 128 GB. Overclocked RAM speeds can reach up to 8800 MHz, offering headroom for performance-oriented memory kits. ECC memory is not supported.

Ports:

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

The rear panel provides a total of six USB ports: one USB 3.2 Gen 2 Type-A port, two USB 3.2 Gen 1 Type-A ports, and three USB 2.0 ports. There are no USB Type-C ports of any kind, and no Thunderbolt 3, Thunderbolt 4, USB 4, or eSATA connectivity is present. Display output is covered by an HDMI port and a VGA connector, while DisplayPort and DVI outputs are absent. Networking is handled by a single RJ45 port, and there are no PS/2 ports on the panel.

Connectors:

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

For storage, the board offers four SATA 3 connectors and two M.2 sockets, while SATA 2, mSATA, and U.2 connectivity are not available. Internal USB expansion is handled through two USB 3.2 Gen 1 headers, two additional USB 3.0 headers, and four USB 2.0 headers, allowing for a meaningful increase in USB port count via front-panel or add-in connections. Three fan headers are present for cooling management, and there is no TPM connector on this board.

Expansion slots:

PCIe 4.0 x16 slots 1
PCIe 5.0 x16 slots 0
PCIe 3.0 x16 slots 0
PCIe x1 slots 2
PCI slots 0
PCIe 2.0 x16 slots 0
PCIe x4 slots 0
PCIe x8 slots 0

Expansion options consist of one PCIe 4.0 x16 slot and two PCIe x1 slots. There are no PCIe 5.0, PCIe 3.0, or PCIe 2.0 x16 slots, and no PCIe x4, PCIe x8, or legacy PCI slots are present on this board.

Audio:

audio channels 7.1
Has S/PDIF Out port ✕
audio connectors 3

The board supports 7.1-channel audio output through three analog audio connectors on the rear panel. An S/PDIF Out port is not included.

Storage:

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

The board supports four RAID configurations: RAID 0, RAID 1, RAID 5, and RAID 10, covering a range of performance and redundancy needs. RAID 0+1 is not supported.

Final Verdict

The Asus B860M-BRO is a focused Micro-ATX motherboard for the LGA 1851 platform that delivers where it matters most for mainstream desktop builders — offering solid storage flexibility through its RAID support and dual M.2 sockets, DDR5 memory with overclocked speeds up to 8800 MHz, and the peace of mind that comes with a dual BIOS and straightforward CMOS reset. Its three-year warranty and practical internal connector layout round out a board that is clearly designed for dependable everyday use rather than feature excess. Users who need wireless connectivity or extensive high-speed USB options will need to look elsewhere, but for those building a reliable, wired Intel system in a compact form factor, the B860M-BRO makes a coherent and well-structured choice.