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Asus Prime B860M-K (LGA 1851) DDR5 Micro-ATX Motherboard
MotherboardsAsus

Asus Prime B860M-K (LGA 1851) DDR5 Micro-ATX Motherboard

MPN: 90MB1JT0-M0EAY0

Key specifications

SocketLGA 1851
Form factormATX
ChipsetIntel B860
Memory typeDDR5
M.2 slots2
Max Memory96 GB
Best indexed price
£127.47GBP
Indexed 20 Oct 2026 — verify at retailer. How we get prices

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Scan£127.47
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Indexed 16 Mar 2026New · seller youritdelivered
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Full Specifications75 fields

Additional Information

Model Number
90MB1JT0-M0EAY0
Gtin
4711387808498

Additional Specifications

Water Cooled
No
Cooling
Passive Heatsinks
Qpi Speed
N/A
Dimensions
-
Note
-

Colour

Primary Colour
Black

Cooling

Backplate
Yes
M 2 Heatsinks
Yes
Vrm Heatsinks
Yes

Core Specifications

Edition
PRIME B860M-K
Form Factor
MicroATX
Chipset
Intel B860

CPU

Cpu Manufacturer
Intel
Socket
1851

Dimensions

Length Depth
244 mm
Width
222 mm
Height
38 mm

Expansion Slots

Pcie X16 Slots Total
1
Pcie X1 Slots Total
1

External Connectivity

Network Interface Type
Wired 2.5 Gigabit LAN
Network Chip Modules
1 x Realtek (2.5GbE LAN)
Rear I O Connectors
1 x 10/100/1000/2500 (LAN) 3 x Audio I/O 1 x DisplayPort 1 x HDMI 1 x PS/ 2 Keyboard/Mouse Combo 3 x USB 2.0

External Ports

Usb 3 1 External Type A
1
Usb 3 0 External Type A
2
Usb 2 0 External Type A
3
Display Connectors
HDMI (1x), Display Port (1x)

Fan Header

4 Pin Fan Connectors
3

Form Factor

Motherboard Formfactor
Micro-ATX

Graphics Support

Primary Gpu Interface
PCIe 4.0 (x16)
Nvidia Sli Support
N/A
Amd Crossfire Support
N/A
Integrated Graphics
-
On Board Graphics Connectors
None

Internal Connectivity

Expansion Slots
1 x M.2, 22-42/60/80, PCIe Gen4x4 1 x M.2, 22-42/60/80, PCIe Gen5 x4 2 x PCIe 4.0 x1 1 x PCIe 4.0 x16
Sata Support
N/A
Raid Support Via
SATA
Storage Mode Support
RAID 0 RAID 1 RAID 10 RAID 5
Internal I O
1 x 24-pin (Power) 1 x 4-pin (Power) 2 x 4-pin CHA_FAN connector 1 x 8-pin (Power) 2 x Addressable Gen 2 Header 1 x Aura RGB Header 1 x Clear CMOS Header 1 x Front Panel Audio Header 1 x Front Panel Connector 1 x S/PDIF-Out Header 4 x SATA III - 6Gb/s 1 x Serial (COM) Header 1 x TPM (SPI_TPM) header 2 x USB 2.0 Header

Internal Ports

Cpu Power Supply
1x 8-Pin
Usb 3 0 3 1 3 2 Internal Type C Header
1
Usb 3 0 3 1 3 2 Internal Type C Possible Ports
1
Usb 3 0 Internal Header
1
Usb 3 0 Internal Possible Ports
2
Usb 2 0 Internal Header
2
Usb 2 0 Internal Possible Ports
4
Rgb Led Connectors
1x RGB (4-Pin 5050 12VGRB), 2x Digital RGB (3-Pin 5VDG)
Front Panel Audio Header
Yes
Spi Tpm Header
Yes

Lighting

Lighting Rgb
Yes

Memory

Max Memory
96 GB
Memory Type
DDR5
Memory Form Factor
DIMM
System Memory Subtype
UDIMM, CUDIMM
Max Memory Speed Oc
8800 MT/s
Eec Support
Yes
Memory Slots
2x

Motherboard

Motherboard Chipset
Intel B860
Built In I O Shield
Yes

RAM Memory Support

Memory Channel
Dual (2)
Memory Type Ecc
Non-ECC
Memory Type R U
UDIMM (Unbuffered)
Memory Speed Mhz
DDR5 - 8800(OC)
Max Memory Capacity
96GB

Storage Ports

M 2 Pcie 4 0 X4
1
M 2 Pcie 5 0 X4
1
Sata 6g Internal
4

Wi

Fi Lan Lan
Yes
Fi Lan Lan Ports
1x 2.5 Gbit/s
Fi Lan Wi Fi Bluetooth
No

General

Audio
7.1 Channel HD Audio