ASRock B860 Pro-A

Name: ASRock B860 Pro-A
Brand: ASRock
SKU: 25822

Manufacturer: ASRock

The ASRock B860 Pro-A is an ATX form factor motherboard built around Intel's LGA 1851 socket and the B860 chipset, offering a well-rounded platform for mainstream desktop builds. It supports up to 256GB of DDR5 memory across four slots in a dual-channel configuration, with standard speeds reaching 5600 MHz and overclocked profiles pushing up to 8666 MHz. The board carries a three-year warranty and includes dual BIOS for added resilience during firmware updates.

Connectivity on the B860 Pro-A covers a broad range of use cases, with six USB 3.2 Gen 1 Type-A ports and one USB 3.2 Gen 2x2 port on the rear panel alongside HDMI 2.1 and a single DisplayPort output. Internal expansion includes three M.2 sockets and four SATA 3 connectors, while storage flexibility is extended through support for RAID 0, 1, 5, and 10 configurations. The board provides one PCIe 5.0 x16 and one PCIe 4.0 x16 slot for graphics and additional cards, along with seven fan headers and a 7.1-channel audio solution rounding out the internal feature set.

Pros

Dual BIOS provides a fallback option if a firmware update fails or the primary BIOS becomes corrupted
Three M.2 sockets allow for multiple fast storage drives without occupying SATA ports
DDR5 memory support with overclocked speeds up to 8666 MHz gives substantial headroom for memory-intensive workloads
Seven fan headers offer thorough cooling control across the system
Full RAID 0, 1, 5, and 10 support accommodates a range of storage redundancy and performance configurations
PCIe 5.0 x16 slot supports the latest generation of add-in cards alongside a PCIe 4.0 x16 slot for additional devices

Cons

No Wi-Fi or Bluetooth means wireless connectivity requires a separate add-in card
Absence of USB 3.2 Gen 2 Type-A ports on the rear panel limits high-speed USB-A throughput
No S/PDIF Out port restricts digital audio output options for users who rely on optical or coaxial connections
No clear CMOS button makes resetting the BIOS less straightforward in troubleshooting scenarios
Only two USB 2.0 rear ports, which may be limiting for users with several legacy peripherals

Who is this for?

This board is a solid fit for users building a capable desktop system around an LGA 1851 processor who want room to grow without stepping into a high-end chipset. The three M.2 sockets combined with full RAID support make it well-suited for content creators or prosumers who need flexible, redundant, or high-throughput storage arrangements. The seven fan headers and overclocking support also appeal to enthusiasts who want precise thermal control and the ability to push DDR5 memory speeds beyond stock settings. Its ATX form factor and dual BIOS additionally make it a reliable choice for system builders who prioritize a standard layout and firmware resilience in a long-term workstation or home office build.

Who is this NOT for?

Users who depend on wireless connectivity out of the box will find this board lacking, as it includes neither Wi-Fi nor Bluetooth, requiring a separate adapter for any wireless use. It is also a poor match for those needing high-speed USB-A throughput on the rear panel, since there are no USB 3.2 Gen 2 Type-A ports available. Additionally, anyone looking to drive a display from the motherboard alone without a dedicated graphics card will be unable to do so, as the board provides no integrated graphics support, making it unsuitable for builds that rely solely on CPU-integrated video output.

General info:

CPU socket	LGA 1851
chipset	B860
form factor	ATX
supports Wi-Fi	✕
Has Bluetooth	✕
HDMI version	HDMI 2.1
Easy to overclock	✓
has RGB lighting	✕
Easy to reset BIOS	✕
Has dual BIOS	✓
CPU sockets	1
Has integrated graphics	✕
warranty period	3 years
height	244 mm
width	305 mm
Has integrated CPU	✕

The ASRock B860 Pro-A is built around the LGA 1851 socket and B860 chipset, housed in a standard ATX form factor measuring 305 mm wide and 244 mm tall. It features a single CPU socket and supports overclocking, while also including dual BIOS for firmware recovery, though it does not offer a dedicated clear CMOS button. The board outputs video via HDMI 2.1 but lacks integrated graphics and has no integrated CPU. Wireless connectivity is absent, as neither Wi-Fi nor Bluetooth are included, and there is no RGB lighting on the board. A three-year warranty is provided with the product.

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 256GB. Standard RAM speeds top out at 5600 MHz, while overclocked profiles can reach up to 8666 MHz. ECC memory is not supported on this board.

Ports:

USB 3.2 Gen 2 ports (USB-A)	0
USB 3.2 Gen 1 ports (USB-A)	6
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	1
USB 4 40Gbps ports	0
USB 4 20Gbps ports	0
Thunderbolt 4 ports	0
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 panel provides a solid range of USB connectivity, led by six USB 3.2 Gen 1 Type-A ports, two USB 2.0 ports, and one USB 3.2 Gen 2x2 Type-C port, while there are no USB 3.2 Gen 2 Type-A, USB 4, Thunderbolt 3, or Thunderbolt 4 ports present. Display output options include an HDMI port and one DisplayPort output, with no DVI or VGA connectors available. Networking is handled by a single RJ45 port, and there are no eSATA or PS/2 ports on this board.

Connectors:

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

Internal connectivity is well-covered, with three M.2 sockets and four SATA 3 connectors for storage, while SATA 2 and U.2 sockets are absent and there is no mSATA connector. Expansion USB headers allow for two additional USB 3.2 Gen 1 ports, two USB 3.0 ports, and four USB 2.0 ports through external brackets or front-panel connections. The board also includes seven fan headers for cooling management and a TPM connector for hardware security functionality.

Expansion slots:

PCIe 4.0 x16 slots	1
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 two full-length PCIe slots: one PCIe 5.0 x16 and one PCIe 4.0 x16, providing bandwidth options for graphics cards and other high-speed add-in cards. There are no PCIe 3.0, PCIe 2.0, PCIe x8, PCIe x4, or PCIe x1 slots, and no legacy PCI slots are present.

Audio:

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

The board delivers 7.1-channel audio output through three analog audio connectors on the rear panel. There is no S/PDIF Out port available for digital audio passthrough.

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, 1, 5, and 10 — covering a range of performance and redundancy setups. RAID 0+1 is not supported.

Final Verdict

The ASRock B860 Pro-A is a well-specified ATX motherboard that covers the essentials for an LGA 1851 build without unnecessary complexity. Its combination of three M.2 sockets, PCIe 5.0 support, and DDR5 memory compatibility with overclocked speeds up to 8666 MHz makes it a capable platform for users who want modern storage and memory performance in a standard form factor. The dual BIOS and broad RAID support add a layer of reliability and flexibility that will appeal to builders prioritizing long-term stability. Where it falls short — most notably the absence of integrated wireless and the lack of rear USB 3.2 Gen 2 Type-A ports — reflects the trade-offs typical of a mainstream chipset board, and prospective buyers should weigh those gaps against their connectivity needs. For a wired desktop build centered on storage flexibility and overclocking headroom, it presents a coherent and practical option.