Skip to content
Build My PC
ASUS PRIME B860M-A
MotherboardsAsus

ASUS PRIME B860M-A

Price TBC

Compatibility Data

SocketLGA 1851
ChipsetIntel | ® | B860 Chipset
Form Factor9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
Memory TypeDDR5
M2 Slots3
Model: 30841

Technical Specifications23 specs

General

Model
PRIME B860M-A
News Updates
  • Please see the updated OS support requirements for the Intel
  • ®
  • Core Ultra 200S series below:
  • •Intel
  • ®
  • Core Ultra 200S Series:
  • Supports Windows 10 (version 21H2 and later) and Windows 11 (version 22H2 and later).
  • •Intel
  • ®
  • Core Ultra 200S Plus Series:
  • Windows 11 (version 25H2 and later) for full compatibility.
  • Please visit our
  • GLOBALwebsite
  • to check and download the latest updates.
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
  • https://www.asus.com/support/download-center/
  • for CPU support list.
  • Intel
  • ®
  • Turbo Boost Max Technology 3.0 support depends on the CPU types.
Chipset
  • Intel
  • ®
  • B860 Chipset
Memory
  • 4 x DIMM slots, max. 256GB, DDR5
  • Supports up to 8666+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, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit
  • https://www.asus.com/support/download-center/
  • .
  • * Adjustments will be made based on the specifications of mass-produced memory products available on the market.
  • * Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics
  • 2 x DisplayPort
  • 1 x HDMI™ port
  • 1 x USB 20Gbps port (USB Type-C
  • ®
  • ) supports DisplayPort video output
  • * Graphics specifications may vary between CPU types. Please refer to www.intel.com for any updates.
  • ** Supports max. 4K@60Hz as specified in DisplayPort 1.4.
  • *** Supports 4K@60Hz as specified in HDMI 2.1.
  • **** Supports max. 4K@120Hz as specified in DisplayPort 1.4.
  • ***** VGA resolution support depends on processors' or graphic cards' resolution.
  • ******While installing the operating system, please ensure that your monitor is connected to the HDMI port on the back I/O panel or to a discrete graphics card.
Expansion Slots
  • Intel® Core™ Ultra Processors(series 2)
  • *1 x PCIe 5.0 x16 slot
  • Intel® B860 Chipset
  • 1 x PCIe 4.0 x16 slot (supports x4 mode)
  • 1 x PCIe 4.0 x1 slot
  • - To ensure compatibility of the device installed, please refer to
  • https://www.asus.com/support/download-center/
  • 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 modes)
  • 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 8 ports)
  • 1 x USB 20Gbps port (1 x USB Type-C
  • ®
  • with DP Alt mode)
  • 1 x USB 10Gbps port (1 x Type-A )
  • 2 x USB 5Gbps ports (2 x Type-A)
  • 4 x USB 2.0 ports (4 x Type-A)
  • Front USB (Total 5 ports)
  • 1 x USB 10Gbps connector (supports USB Type-C
  • ®
  • )
  • 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
  • 1 x USB 2.0 header supports 2 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 20Gbps port (1 x USB Type-C
  • ®
  • with DP Alt mode)
  • 1 x USB 10Gbps port (1 x Type-A)
  • 2 x USB 5Gbps ports (2 x Type-A)
  • 4 x USB 2.0 ports (4 x Type-A )
  • 2 x DisplayPort
  • 1 x HDMI™ port
  • 1 x Realtek 2.5Gb Ethernet port
  • 3 x Audio jacks
Internal I O
  • Fan and Cooling Related
  • 1 x 4-pin CPU Fan header
  • 1 x 4-pin CPU OPT Fan header
  • 1 x 4-pin AIO Pump header
  • 3 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 10Gbps connector (supports USB Type-C
  • ®
  • )
  • 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
  • 1 x USB 2.0 header supports 2 additionalUSB 2.0 ports
  • Miscellaneous
  • 3 x Addressable Gen 2 headers
  • 1 x Aura RGB header
  • 1 x Clear CMOS header
  • 1 x Chassis Intrusion 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
  • 1 x Thunderbolt™ (USB4
  • ®
  • ) header
Special Features
  • ASUS 5X PROTECTION III
  • - DIGI+ VRM (- Digital power design with DrMOS)
  • - ESD Guards
  • - LANGuard
  • - Overvoltage protection
  • - SafeSlot
  • - Stainless-steel back I/O
  • ASUS Q-Design
  • - Q-Dashboard
  • - Q-DIMM
  • - Q-LED Core
  • - Q-Slot
  • ASUS Thermal Solution
  • - M.2 heatsink
  • - VRM heatsink design
  • ASUS EZ DIY
  • - ProCool
  • - Pre-mounted I/O shield
  • Aura Sync
  • - Aura RGB header
  • - Addressable Gen2 headers
Software Features
  • ASUS Exclusive Software
  • Armoury Crate
  • - Aura Creator
  • - 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 M.2 rubber package
  • 1 x Screw package for M.2 SSD
  • Documentation
  • 1 x Quick start guide
Operating System
Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)
Form Factor
9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)

Physical Dimensions

Length Mm
243.8
Width Mm
243.8
Height Mm
619.8

Where to Buy

eBay
UK
Search on eBay
No direct prices available. Check alternative links.

When you purchase through links on our site, we may earn a commission. How it works