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

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Intel Core Ultra compatible, LGA 1851 Socket, B860, PCIe Gen 4, Micro-ATX, 2x DIMM slots, DDR5, 2x M.2 , 4 x SATA, 2.5Gb LAN, Type-C
£170.99 (incl. VAT)
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SKU MOT-ASU-04079
EAN 4711387808498
MPN 90MB1JT0-M0EAY0
MANUFACTURER Asus
Specification Details
CPU Support Intel® Core™ Ultra Processors (Series 2), LGA1851*
Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0**
* Refer to ASUS CPU support list
** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types.
Chipset Intel® B860 Chipset
Memory 2 x DIMM slots, max. 96GB, DDR5
Supports up to 8800+MT/s (OC), Non-ECC, Un-buffered, Clocked Unbuffered DIMM (CUDIMM)*
Dual channel memory architecture
DIMM Fit
Supports Intel® Extreme Memory Profile (XMP) memory module
ASUS Enhanced Memory Profile III (AEMPIII)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration. Visit ASUS Support for more details.
** Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics 1 x DisplayPort**
1 x HDMI™ port***
* Graphics specifications may vary between CPU types. Please refer to Intel for updates.
** Supports max. 4K@60Hz as specified in DisplayPort 1.4.
*** Supports 4K@60Hz as specified in HDMI 2.1.
**** VGA resolution support depends on processors' or graphic cards' resolution.
Expansion Slots Intel® Core™ Ultra Processors (Series 2)
1 x PCIe 4.0 x16 slot
Intel® B860 Chipset
2 x PCIe 4.0 x1 slots
- To ensure compatibility of the device installed, please refer to ASUS Support for the list of supported peripherals.
Storage Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports*
Intel® Core™ Ultra Processors (Series 2)
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
Intel® B860 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
4 x SATA 6Gb/s ports
* Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10.
Ethernet 1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
USB Rear USB (Total 6 ports)
1 x USB 10Gbps port (1 x Type-A)
2 x USB 5Gbps ports (2 x Type-A)
3 x USB 2.0 ports (3 x Type-A)**
Front USB (Total 7 ports)
1 x USB 5Gbps connector (supports USB Type-C®)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports**
* USB Type-C® power delivery output: max. 5V/3A
** USB_E1 port, USB_E2 port, USB_E3 port and USB_E4 port share the bandwidth.
Audio Realtek 7.1 Surround Sound High Definition Audio CODEC*
Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
Supports up to 24-Bit/192 kHz playback
Audio Features
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Back Panel I/O Ports 1 x USB 10Gbps port (1 x Type-A)
2 x USB 5Gbps ports (2 x Type-A)
3 x USB 2.0 ports (3 x Type-A)
1 x DisplayPort
1 x HDMI™ port
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x PS/2 Keyboard/Mouse combo port
Internal I/O Connectors Fan and Cooling Related
1 x 4-pin CPU Fan header
2 x 4-pin Chassis Fan headers
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
Storage Related
2 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
USB
1 x USB 5Gbps connector (supports USB Type-C®)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Miscellaneous
2 x Addressable Gen2 headers
1 x Aura RGB header
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x S/PDIF Out header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin Front System Panel header
Special Features ASUS 5X PROTECTION III
- DIGI+ VRM
- LANGuard
- Overvoltage protection
- SafeSlot Core+
- Stainless-steel back I/O
ASUS Q-Design
- Q-Slot
- Q-Dashboard
- Q-DIMM
- Q-LED Core
ASUS Thermal Solution
- VRM heatsinks design
ASUS EZ DIY
- ProCool
Aura Sync
- Addressable Gen2 headers
Software Features ASUS Exclusive Software
Armoury Crate
- Aura Sync
- Fan Xpert 2+
- Power Saving
ASUS DriverHub
ASUS CPU-Z
Norton 360 for Deluxe (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash
- ASUS UEFI BIOS EZ Mode
- ASUS MyHotkey
BIOS 256 (128+128) Mb Flash ROM, UEFI AMI BIOS
Manageability WOL by PME, PXE
Accessories Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x I/O Shield
2 x M.2 anchors
Documentation
1 x Quick start guide
Operating System Windows 11 (22H2 & later), Windows 10 64-bit (21H2 & later)
Form Factor mATX Form Factor
9.6 inch x 8.75 inch (24.4cm x 22.2cm)
Colour
Primary Colour Black
Lighting
Lighting Yes
Form Factor
Motherboard formfactor Micro-ATX
Motherboard
Motherboard Chipset Intel B860
Built-In I/O Shield Yes
CPU
CPU Manufacturer Intel
CPU Socket 1851
Dimensions
Length / Depth 244 mm
Width 222 mm
Height 38 mm
Wi-Fi & LAN
LAN Yes
LAN Ports 1x 2.5 Gbit/s
Wi-Fi / Bluetooth No
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
Expansion Slots
PCIe x16 slots (total) 1
PCIe x1 slots (total) 1
Fan Header
4 Pin Fan Connectors 3
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
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)
Cooling
Backplate Yes
M.2 Heatsinks Yes
VRM Heatsinks Yes
Storage Ports
M.2 PCIe 4.0 x4 1
M.2 PCIe 5.0 x4 1
SATA 6G (internal) 4
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£170.99 (incl. VAT)
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