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Asus prime b860m-k micro-atx motherboard lga 1851 intel b860 ddr5 pcie 5.0 dual m.2 2.5GBe black

Product image: Asus prime b860m-k micro-atx motherboard lga 1851 intel b860 ddr5 pcie 5.0 dual m.2 2.5GBe black-null
Product image: Asus prime b860m-k micro-atx motherboard lga 1851 intel b860 ddr5 pcie 5.0 dual m.2 2.5GBe black-null
Product image: Asus prime b860m-k micro-atx motherboard lga 1851 intel b860 ddr5 pcie 5.0 dual m.2 2.5GBe black-null
Product image: Asus prime b860m-k micro-atx motherboard lga 1851 intel b860 ddr5 pcie 5.0 dual m.2 2.5GBe black-null
Product image: Asus prime b860m-k micro-atx motherboard lga 1851 intel b860 ddr5 pcie 5.0 dual m.2 2.5GBe black-null
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Asus prime b860m-k micro-atx motherboard lga 1851 intel b860 ddr5 pcie 5.0 dual m.2 2.5GBe black

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Description

Item No. 3fd43d2d-7537-4627-910e-dc8162de08f3
ASUS Prime B860M-K — Reliable Micro-ATX for Intel Core Ultra LGA 1851 · Intel B8602× DDR5 up to 8800 MT/s OCPCIe 5.0 x16 + Gen5 M.22.5GBE LAN The ASUS Prime B860M-K is a micro-ATX motherboard built on the Intel B860 chipset and the LGA 1851 socket, supporting Intel Core Ultra Series 2 (Arrow Lake) desktop processors. Sold under ASUS part number 90MB1JT0-M0EAY0 (EAN 4711387808498), it pairs DDR5 memory, a PCIe 5.0 x16 graphics slot, a PCIe 5.0 M.2 plus a Gen4 M.2 and 2.5GBE networking in a depen

Attributes

Motherboard Characteristics

  • Processor Socket: Socket 1851

Details

ASUS Prime B860M-K — Reliable Micro-ATX forIntel Core Ultra

LGA 1851 · Intel B8602× DDR5 up to 8800 MT/s OCPCIe 5.0 x16 + Gen5 M.22.5GBE LAN

The ASUS Prime B860M-K is a micro-ATX motherboard built on the Intel B860 chipset and the LGA 1851 socket, supportingIntel Core Ultra Series 2 (Arrow Lake) desktop processors. Sold under ASUS part number 90MB1JT0-M0EAY0 (EAN 4711387808498), it pairs DDR5 memory, a PCIe 5.0 x16 graphics slot, a PCIe 5.0 M.2 plus a Gen4 M.2 and 2.5GBE networking in a dependable, value-focused board for everyday and gaming PCs. Typically in stock with fast delivery across Cyprus.

Compatibility — read before buying
This is an LGA 1851 board supporting onlyIntel Core Ultra Series 2 (Arrow Lake) desktop CPUs — not LGA 1700 (12th/13th/14th Gen). It uses DDR5 memory only (no DDR4) and has two DIMM slots (max 128GB). Fits Micro-ATX or larger cases.

Best For

✓Everyday and mainstreamIntel Core Ultra builds
✓Value gaming PCs with a PCIe 5.0 GPU
✓Compact Micro-ATX chassis
✓Fast Gen5 + Gen4 NVMe storage
✓2.5GBE wired networking
✓First-time builders wanting ASUS reliability

Key Features

 
PCIe 5.0 graphics ready
A PCIe 5.0 x16 slot supports next-generation graphics cards, giving plenty of headroom for current and future GPUs.
 
Gen5 + Gen4 M.2 and 4× SATA
M.2_1 runs PCIe 5.0 x4 for the fastest NVMe SSDs, M.2_2 adds PCIe 4.0 x4, and four SATA 6GB/s ports cover extra drives.
 
DDR5 performance
Two DDR5 DIMM slots support up to 128GB dual-channel memory at speeds up to 8800 MT/s (OC) for responsive performance.
 
Practical connectivity
Realtek 2.5GBE LAN, USB 10GBps and 5GBps Type-A ports, HDMI and DisplayPort ouTPUts, plus ASUS Aura Sync addressable RGB support.

Technical Specifications

Identification
Part Number 90MB1JT0-M0EAY0
EAN / GTIN 4711387808498
Model ASUS Prime B860M-K
Brand ASUS
Platform
Chipset Intel B860
Socket LGA 1851
CPU Support Intel Core Ultra Processors (Series 2) — Arrow Lake desktop
Form Factor Micro-ATX
Memory
Slots 2× DDR5 DIMM (Dual-Channel)
Max Capacity 128GB
Speed Up to 8800 MT/s (OC)
Expansion & Storage
PCIe Slot 1× PCIe 5.0 x16
M.2 M.2_1 PCIe 5.0 x4 + M.2_2 PCIe 4.0 x4 (2242/2260/2280)
SATA 4× SATA 6GB/s
Connectivity & I/O
LAN Realtek 2.5GBE LAN (RJ-45)
Display Out 1× HDMI + 1× DisplayPort (integrated graphics)
Rear USB 1× USB 10GBps Type-A, 2× USB 5GBps Type-A, 3× USB 2.0
Lighting Aura Sync addressable RGB header support
Other
Colour Black
Operating System Windows 11 64-bit

Frequently Asked Questions

Which CPUs work with the ASUS Prime B860M-K?
It supportsIntel Core Ultra Series 2 (Arrow Lake) desktop processors on the LGA 1851 socket. Older LGA 1700 chips (12th/13th/14th Gen Core) are not compatible.
How much memory does it support?
It has two DDR5 DIMM slots supporting up to 128GB of dual-channel memory at speeds up to 8800 MT/s (OC). DDR4 is not supported.
Does it support PCIe 5.0 graphics and Gen5 SSDs?
Yes. The x16 slot runs at PCIe 5.0 and the primary M.2_1 slot supports PCIe 5.0 x4 NVMe SSDs; a second M.2 adds PCIe 4.0 storage.
Does this board have Wi-Fi?
No. The Prime B860M-K is a wired-only board with 2.5GBE LAN. If you need built-in Wi-Fi, choose a Wi-Fi-equipped B860 model.
Singular Expert Insight
The Prime B860M-K is ASUS’s entry into the B860 line — a clean, reliable micro-ATX board that still includes PCIe 5.0 graphics and a Gen5 M.2, but keeps costs down with two DIMM slots and no Wi-Fi. If you want four DIMM slots and more expansion, the Gigabyte B860M D3HP is an alternative; if you need onboard Wi-Fi, look at a B860 WIFI model. It pairs well with a fast PCIe Gen5 internal SSD in the primary M.2 slot.

Buyer's Guide

Buy it if
You want a dependable, affordable ASUS micro-ATX board for anIntel Core Ultra build with PCIe 5.0 graphics, Gen5 M.2 and 2.5GBE.
Skip it if
You need four DIMM slots, more than 128GB RAM, built-in Wi-Fi, or Thunderbolt — choose a higher-tier B860 or Z890 board.
Also consider
The Gigabyte B860M D3HP for four DIMM slots, or a B860 WIFI model for integrated wireless.