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Asrock b860m pro-a Wi-Fi micro-atx motherboard lga1851 b860 ddr5 pcie 5.0 Wi-Fi 6e 2.5GBe black 90-mxbrs0-a0uayz

Product image: Asrock b860m pro-a Wi-Fi micro-atx motherboard lga1851 b860 ddr5 pcie 5.0 Wi-Fi 6e 2.5GBe black 90-mxbrs0-a0uayz-null
Product image: Asrock b860m pro-a Wi-Fi micro-atx motherboard lga1851 b860 ddr5 pcie 5.0 Wi-Fi 6e 2.5GBe black 90-mxbrs0-a0uayz-null
Product image: Asrock b860m pro-a Wi-Fi micro-atx motherboard lga1851 b860 ddr5 pcie 5.0 Wi-Fi 6e 2.5GBe black 90-mxbrs0-a0uayz-null
Product image: Asrock b860m pro-a Wi-Fi micro-atx motherboard lga1851 b860 ddr5 pcie 5.0 Wi-Fi 6e 2.5GBe black 90-mxbrs0-a0uayz-null
Product image: Asrock b860m pro-a Wi-Fi micro-atx motherboard lga1851 b860 ddr5 pcie 5.0 Wi-Fi 6e 2.5GBe black 90-mxbrs0-a0uayz-null
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Asrock b860m pro-a Wi-Fi micro-atx motherboard lga1851 b860 ddr5 pcie 5.0 Wi-Fi 6e 2.5GBe black 90-mxbrs0-a0uayz

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Description

Item No. aaebc992-0d8e-4cb4-b0ec-5322332aa354
ASRock B860M Pro-A WiFi — Micro-ATX LGA1851 Motherboard A compact, value B860 Micro-ATX board for Intel Core Ultra Series 2 with onboard Wi-Fi 6E, PCIe 5.0, three M.2 slots and 2.5GBE networking. Intel B860 · LGA1851DDR5 up to 8666+ MHz OCPCIe 5.0 · 3× M.2Wi-Fi 6E · 2.5GBE The ASRock B860M Pro-A WiFi (part number 90-MXBRS0-A0UAYZ, EAN 4711581490307) is a Micro-ATX motherboard for Intel® Core™ Ultra Series 2 processors on the LGA1851 socket, built on the B860 chipset and tuned by the Pro-A line

Attributes

Motherboard Characteristics

  • Processor Socket: Socket 1851

Details

ASRock B860M Pro-A WiFi — Micro-ATX LGA1851 Motherboard

A compact, value B860 Micro-ATX board forIntel Core Ultra Series 2 with onboard Wi-Fi 6E, PCIe 5.0, three M.2 slots and 2.5GBE networking.
Intel B860 · LGA1851DDR5 up to 8666+ MHz OCPCIe 5.0 · 3× M.2Wi-Fi 6E · 2.5GBE
The ASRock B860M Pro-A WiFi (part number 90-MXBRS0-A0UAYZ, EAN 4711581490307) is a Micro-ATX motherboard for Intel® Core™ Ultra Series 2 processors on the LGA1851 socket, built on the B860 chipset and tuned by the Pro-A line for reliable everyday performance in a compact footprint. It adds onboard Wi-Fi 6E and Bluetooth to the essentials — a reinforced-steel PCIe 5.0 x16 slot, a Gen5 M.2 socket, three M.2 slots in total, DDR5 memory and a Dragon 2.5GBE LAN. Typically in stock with fast delivery across Cyprus.
Compatibility: Supports onlyIntel Core Ultra Series 2 (Arrow Lake) CPUs on the LGA1851 socket — not compatible with LGA1700 (12th–14th Gen) chips. Uses DDR5 memory only (no DDR4), with Intel XMP 3.0x profiles. Micro-ATX form factor (24.4 × 24.4 cm) fits Micro-ATX and larger ATX cases. It includes onboard Wi-Fi 6E and Bluetooth (module and antennas included), but has no Thunderbolt, and B860 supports memory overclocking but not CPU core overclocking.

Best For

✓Compact, value Core Ultra Series 2 builds
✓Micro-ATX cases and smaller desktop systems
✓Wireless setups needing onboard Wi-Fi 6E and Bluetooth
✓Gamers wanting PCIe 5.0 graphics without a big spend
✓Fast, roomy storage with three M.2 slots plus four SATA
✓RGB builds using Polychrome SYNC and SignalRGB

Key Features

 
Onboard Wi-Fi 6E & Bluetooth
An included 802.11axe Wi-Fi 6E module with 6GHz-band support and Bluetooth 5.3 delivers fast, low-latency wireless out of the box — no add-in card needed.
 
PCIe 5.0 & Three M.2
A reinforced steel PCIe 5.0 x16 slot plus one Gen5x4 and two Gen4x4 M.2 sockets give strong graphics and Generous fast storage on a compact board.
 
DDR5 Memory OC
Four DDR5 DIMM slots up to 256GB and 8666+ MHz OC with Intel XMP 3.0x and CUDIMM support for fast, stable memory tuning.
 
Reliable, DIY-Friendly Design
A 10+1+1+1+1 Dr.MOS VRM plus a Dragon 2.5GBE LAN, USB-C 20GB/s, BIOS Flashback and Auto Driver Installer make building and updating simple.

Technical Specifications

Identification
Part Number 90-MXBRS0-A0UAYZ
EAN / GTIN 4711581490307
Model ASRock B860M Pro-A WiFi
Platform
Socket Intel LGA1851 — for Core Ultra Series 2 (Arrow Lake) desktop CPUs
Chipset Intel B860
Power Delivery 10+1+1+1+1 phase, Dr.MOS — integrated power stage
Form Factor Micro-ATX — 24.4 × 24.4 cm; 6-layer PCB
Memory
Slots 4 × DDR5 DIMM, Dual Channel
Max Capacity 256GB
Speed Up to 8666+ MHz (OC), 5600 MHz native
Profiles Intel XMP 3.0x; CUDIMM supported
Expansion & Storage
PCIe 1 × PCIe 5.0 x16 (reinforced steel) + 1 × PCIe 4.0 x4
M.2 Sockets 1 × PCIe Gen5x4 + 2 × PCIe Gen4x4 (3 total)
SATA 4 × SATA3 6.0GB/s
RAID RAID 0 / 1 / 5 / 10 (SATA)
Connectivity
Rear USB 1 × USB 3.2 Gen2x2 Type-C (20GB/s) + 3 × USB 3.2 Gen1 + 2 × USB 2.0
Display Out 1 × HDMI 2.1 (4K 120Hz) + 1 × DisplayPort 1.4 (8K 60Hz) — iGPU required
Wired LAN Realtek Dragon 2.5GBE (RTL8125BG)
Wireless 802.11axe Wi-Fi 6E (2×2) + Bluetooth 5.3
Audio Realtek ALC897 7.1CH
Power & Compliance
Power Connectors 1 × 24-pin ATX + 1 × 8-pin + 1 × 4-pin 12V
Certifications FCC, CE, ErP/EuP
Operating System Microsoft Windows 11 64-bit

Frequently Asked Questions

Which CPUs does the B860M Pro-A WiFi support?
It supportsIntel Core Ultra Series 2 (Arrow Lake) processors on the LGA1851 socket. Older LGA1700 chips (12th–14th Gen Core) are not compatible.
Does it have onboard Wi-Fi?
Yes — this WiFi model includes an 802.11axe Wi-Fi 6E module with 6GHz-band support, Bluetooth 5.3 and two antennas in the box. (The non-WiFi B860M Pro-A leaves the M.2 E-key slot empty.)
Will it fit my case?
It is a Micro-ATX board (24.4 × 24.4 cm), which fits Micro-ATX cases as well as larger Mid-Tower ATX cases.
Does it support DDR4 memory?
No. It uses DDR5 only — four DIMM slots up to 256GB, with speeds to 8666+ MHz OC and Intel XMP 3.0x profiles.
Singular Expert Insight
The B860M Pro-A WiFi is the compact, wireless-ready entry into the Core Ultra Series 2 platform: it keeps a reinforced-steel PCIe 5.0 slot, a Gen5 M.2 and three M.2 slots in total, and adds onboard Wi-Fi 6E — the main upgrade over the non-WiFi B860M Pro-A. It still drops Thunderbolt and premium audio to stay affordable. For a small, dependable Core Ultra build that needs wireless, it is a smart choice. Pair it with an XMP-rated DDR5 memory kit for the best performance.

Buyer's Guide

Buy it if
You want a compact Micro-ATX Core Ultra board with onboard Wi-Fi 6E, PCIe 5.0, Gen5 M.2, three M.2 slots and 2.5GBE.
Skip it if
You want Thunderbolt, premium audio, Wi-Fi 7, a full-size ATX board, or CPU core overclocking for a K-series chip.
Also consider
The B860M Pro-A (non-WiFi) to save a little, the B860 Pro-A WiFi (ATX) for a full-size board, or the B860 Lightning WiFi for Thunderbolt 4.