ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5
ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5, photo 2
ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5, photo 3
ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5, photo 4
ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5, photo 5
ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5, photo 6
ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5, photo 7
ASUS

ASUS Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5

SKU HC-612259MPN 90MB1JT0-M0EAY0

  • LGA1851
  • B860
  • Micro-ATX

Highlights

  • Intel B860 chipset with LGA 1851 socket for Arrow Lake CPUs
  • Two DDR5 DIMM slots supporting up to 96 GB at 8800 MT/s
  • PCIe 5.0 x16 slot plus two PCIe 4.0 x1 slots
  • One PCIe 5.0 M.2 and one PCIe 4.0 M.2 with heatsinks
  • 2.5 Gbps LAN and integrated I/O shield
  • Three 4-pin PWM fan headers and VRM heatsinks

Key specs

Socket
LGA1851
Chipset
B860
Form factor
Micro-ATX
Memory
DDR5
Wi-Fi
No
CPU Socket
1851
All specifications
$119.99
  • ≈ 0.001555 BTC
  • ≈ 0.0524 ETH
  • ≈ 120.11 USDT

In stock Ships by Tue, Nov 10 when paid today.

  • Delivery to the United States: $39.90 DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today
  • Rate locked at checkout Up to 60 min to send BTC, 30 min for ETH and USDT
  • New, sealed and genuine Manufacturer warranty: 3 years
  • 30-day returns Unused items in original packaging
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Overview

Micro-ATX board with Intel B860 chipset for LGA 1851 CPUs. Offers PCIe 5.0 graphics, dual M.2 storage, 2.5G LAN, and DDR5 up to 8800 MT/s without CPU overclocking.

Design and Build

The board uses a black Micro-ATX layout measuring 244 by 222 mm. An integrated I/O shield simplifies installation. VRM and M.2 heatsinks help manage thermals during sustained loads.

Performance and Use

Supports Intel Core Ultra processors with memory overclocking up to 8800 MT/s. The PCIe 5.0 x16 slot delivers full bandwidth for modern graphics cards. Storage includes one PCIe 5.0 and one PCIe 4.0 M.2 slot alongside four SATA ports.

Connectivity

Rear I/O provides one USB 3.1 Type-A, two USB 3.0 Type-A, three USB 2.0 Type-A, HDMI, DisplayPort, and 2.5 Gbps Ethernet. Internal headers add one USB 3.2 Gen 2 Type-C, one USB 3.0 header for two ports, and two USB 2.0 headers for four ports.

Cooling and Power

Three 4-pin PWM fan headers support chassis fans or radiators. The CPU receives power through a single 8-pin connector. RGB and addressable RGB headers allow lighting synchronization.

Prime B860M-K Motherboard Socket LGA 1851 Intel B860 Micro-ATX DDR5 specifications

General
BrandASUS
Manufacturer part no.90MB1JT0-M0EAY0
EAN4711387808498
Warranty3 years (manufacturer)
Form Factor
Motherboard Form FactorMicro-ATX
CPU
CPU ManufacturerIntel
CPU Socket1851
Motherboard
Motherboard ChipsetIntel B860
Built-In I/O ShieldYes
Memory
Max. Memory96 GB
Memory TypeDDR5
Memory Form FactorDIMM
System Memory SubtypeCUDIMM, UDIMM
Max. Memory Speed (OC)8800 MT/s
ECC SupportYes
Memory slots2x
Wi-Fi & LAN
LANYes
LAN Ports1x 2.5 Gbit/s
Wi-Fi / BluetoothNo
Cooling
BackplateYes
M.2 HeatsinksYes
VRM HeatsinksYes
Internal Ports
CPU Power Supply1x 8-Pin
USB 3.0 / 3.1 / 3.2 (internal) Type C Header1
USB 3.0 / 3.1 / 3.2 (internal) Type C Possible Ports1
USB 3.0 (internal) Header1
USB 3.0 (internal) Possible Ports2
USB 2.0 (internal) Header2
USB 2.0 (internal) Possible Ports4
RGB / LED connectors1x RGB (4-Pin 5050 12VGRB), 2x Digital RGB (3-Pin 5VDG)
Front Panel Audio HeaderYes
SPI TPM HeaderYes
External Ports
USB 3.1 (external) Type A1
USB 3.0 (external) Type A2
USB 2.0 (external) Type A3
Display ConnectorsDisplayPort (1x), HDMI (1x)
Storage Ports
M.2 PCIe 4.0 x41
M.2 PCIe 5.0 x41
SATA 6G (internal)4
Expansion Slots
PCIe x16 slots (total)1
PCIe x1 slots (total)1
Fan Header
4 Pin Fan Connectors3
Lighting
Lighting / RGBYes
Color
Primary ColorBlack
Dimensions
Length / Depth244 mm
Width222 mm
Height38 mm

Specifications come from the manufacturer and can change without notice. Check the box contents and compatibility before ordering; our team answers questions within one business day.

Shipping & returns

Delivery to the United States: $39.90DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today

Ships from our warehouse in Germany: in stock, it leaves within 1–2 business days, tracked to the door.
ToBusiness daysThis item
GermanyDHL Paket1–2$5.90
Other EU countriesDHL Parcel International2–8$11.90–$15.90
UK, Switzerland and NorwayDHL Parcel International3–7$24.90
United States and CanadaDHL Express Worldwide2–5$39.90
Asia and the Middle EastDHL Express Worldwide2–5$49.90
Australia and New ZealandDHL Express Worldwide3–6$59.90
  • Discreet packaging Plain, unbranded box — no crypto or brand references outside
  • Returns 30 days for unused items in original packaging; faulty items are on us
Rates and delivery times by country

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