ASRock B860M Pro-A Micro-ATX Motherboard LGA1851 B860 DDR5 PCIe 5.0 3x M.2 2.5GbE Black 90-MXBRR0-A0UAYZ
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ASRock
ASRock B860M Pro-A Micro-ATX Motherboard LGA1851 B860 DDR5 PCIe 5.0 3x M.2 2.5GbE Black 90-MXBRR0-A0UAYZ
€162.76 inc. VAT
90-MXBRR0-A0UAYZ
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ASRock B860M Pro-A — Value Micro-ATX LGA1851 Motherboard
A compact, budget-friendly B860 Micro-ATX board for Intel Core Ultra Series 2, keeping PCIe 5.0, DDR5, three M.2 slots and 2.5GbE networking in a smaller footprint.
Intel B860 · LGA1851DDR5 up to 8666+ MHz OCPCIe 5.0 · 3× M.22.5GbE LAN
The ASRock B860M Pro-A (part number 90-MXBRR0-A0UAYZ, EAN 4711581490291) 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 at the lowest cost. Despite its compact size it keeps 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 only Intel 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. Note: this model has no onboard Wi-Fi (an M.2 E-key slot is provided for an optional Wi-Fi module), no Thunderbolt, and B860 supports memory overclocking but not CPU core overclocking.
Best For
✓Compact, budget Core Ultra Series 2 builds
✓Micro-ATX cases and smaller desktop systems
✓Gamers wanting PCIe 5.0 graphics without a big spend
✓Fast, roomy storage with three M.2 slots plus four SATA
✓Wired setups using the Dragon 2.5GbE LAN
✓RGB builds using Polychrome SYNC and SignalRGB
Key Features
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 in 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.
Dragon 2.5GbE & USB-C
A Dragon 2.5 Gigabit LAN with traffic prioritisation and a rear USB 3.2 Gen2x2 Type-C at 20 Gb/s for fast networking and external storage.
Reliable, DIY-Friendly Design
A 10+1+1+1+1 Dr.MOS VRM plus BIOS Flashback, Auto Driver Installer and Post Status Checker make building and updating quick and simple.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
The B860M Pro-A is the entry point into the Core Ultra Series 2 platform: a compact Micro-ATX board that still keeps a reinforced-steel PCIe 5.0 slot, a Gen5 M.2 and three M.2 slots in total, which is generous for the price. It drops onboard Wi-Fi and Thunderbolt to stay affordable — easily solved with a cheap Wi-Fi card or USB adapter if needed. For a small, dependable Core Ultra build on a budget 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 the most affordable, compact Micro-ATX Core Ultra board that still keeps PCIe 5.0, Gen5 M.2, three M.2 slots and 2.5GbE.
Skip it if
You need onboard Wi-Fi, Thunderbolt, premium audio, a full-size ATX board, or CPU core overclocking for a K-series chip.
Also consider
The ASRock B860 Pro-A WiFi (ATX) for onboard Wi-Fi, the B860 Lightning WiFi for Thunderbolt 4, or a Z890 board for CPU overclocking.
Features - ASRock - 90-MXBRR0-A0UAYZ
CPU Socket
- Socket 1851
Colour
black
More Details
Product Code
04:519492
EAN Code
4711581490291
Manufacturer
ASRock