Model
PRIME B860M-A

CPU
Support Intel® Core- Ultra Processors (Series 2) - LGA1851*
Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0***
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)


* Non-ECC- un-buffered DDR5 memory supports On-Die ECC function.
Graphics
2 x DisplayPort**
1 x HDMI- port***
* 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.

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

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®)
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

Back Panel I/O Ports
1 x USB 20Gbps port (1 x USB Type-C®)
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 Connectors
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)