ASUS PRIME B860M-K-CSM Motherboard

CPU Support

• Socket Type: LGA1851

• Compatible Processors: Intel® Core™ Ultra Series 2

• Supported Technologies:

  • Intel® Turbo Boost Technology 2.0

  • Intel® Turbo Boost Max Technology 3.0*

  *Support depends on specific CPU models

• For full CPU support list, visit: ASUS CPU Support

Chipset

• Chipset: Intel® B860

Memory

• Memory Slots: 4 x DDR5 DIMM slots

• Maximum Memory Capacity: 256GB

• Supported Speeds: Up to 8666+ MT/s (OC)

• Architecture: Dual Channel

• Memory Types:

  • Non-ECC, Un-buffered DIMMs (CUDIMM)

  • Intel® Extreme Memory Profile (XMP) Support

  • ASUS Enhanced Memory Profile III (AEMP III)

• On-Die ECC Support: Yes (DDR5 standard feature)

• Memory performance may vary by CPU and module configuration

Graphics

• Integrated Graphics Support: Yes (depends on CPU)

• Video Outputs:

  • 1 x HDMI™ 2.1 (4K @ 60Hz)

  • 1 x DisplayPort 1.4 (4K @ 60Hz)

• VGA output resolution support depends on processor capability

Expansion Slots

• From CPU:

  • 1 x PCIe 5.0 x16 slot

• From Chipset:

  • 1 x PCIe 4.0 x16 slot (x4 mode)

  • 3 x PCIe 4.0 x16 slots (x1 mode)

Check peripheral compatibility at ASUS Support

Storage Interfaces

• M.2 Slots:

  • M.2_1 (CPU): PCIe 5.0 x4, 2242/2260/2280

  • M.2_2 (Chipset): PCIe 4.0 x4, 2242/2260/2280/22110

• SATA Ports:

  • 4 x SATA 6Gb/s ports

• RAID Support:

  • SATA RAID 0, 1, 5, 10 (Intel® Rapid Storage Technology)

Networking

• Wired LAN:

  • Realtek 2.5Gb Ethernet

  • ASUS LANGuard Protection

• Wireless Connectivity:

  • Wi-Fi 6E (802.11ax, 2×2) – 2.4/5/6 GHz

  • Bluetooth® v5.3

  *6GHz Wi-Fi and Bluetooth version may vary by region and OS. Wi-Fi 6E requires Windows 11 or later.

Rear I/O Ports

• 1 x USB 3.2 Gen 2×2 Type-C® (20Gbps)

• 2 x USB 3.2 Gen 2 Type-A (10Gbps)

• 1 x USB 3.2 Gen 1 Type-A (5Gbps)

• 4 x USB 2.0 Type-A

• 1 x DisplayPort

• 1 x HDMI™ port

• 1 x Wi-Fi module connector

• 1 x Realtek 2.5Gb Ethernet port

• 3 x Audio jacks (Line-out, Line-in, Mic)

Internal I/O Headers

• Power:

  • 1 x 24-pin ATX Main Power

  • 1 x 8-pin +12V CPU Power

• Cooling:

  • 1 x 4-pin CPU Fan

  • 1 x 4-pin CPU OPT Fan

  • 1 x 4-pin AIO Pump

  • 4 x 4-pin Chassis Fans

• USB Headers:

  • 1 x USB 3.2 Gen 1 Type-C

  • 1 x USB 3.2 Gen 1 Header (2 x ports)

  • 1 x USB 2.0 Header (2 x ports)

• Storage Headers:

  • 2 x M.2 Slots (Key M)

  • 4 x SATA 6Gb/s ports

• Other Headers:

  • 3 x Addressable Gen 2 RGB

  • 1 x Aura RGB Header

  • 1 x COM Port Header

  • 1 x Clear CMOS Header

  • 1 x Chassis Intrusion

  • 1 x Front Panel Audio

  • 1 x S/PDIF Out

  • 1 x Thunderbolt™ (USB4®) Header

  • 1 x SPI TPM (14-1 Pin)

  • 1 x 10-1 pin System Panel Header

Audio

• Codec: Realtek 7.1 HD Audio

• Output: Supports up to 24-bit/192kHz

• Features:

  • Jack-detection and front panel retasking

  • Audio shielding

  • Premium capacitors

  • Dedicated PCB layers

• Front-panel 7.1 audio output requires compatible HD chassis module

Software Package

• ASUS Utilities:

  • Armoury Crate

  • Aura Creator & Aura Sync

  • Fan Xpert 2+

  • Power Saving

  • ASUS AI Advisor

  • ASUS DriverHub

  • ASUS GlideX

  • ASUS CPU-Z

• Included Software Trials:

  • Adobe Creative Cloud (Free Trial)

  • Norton 360 Deluxe (60 Days)

  • WinRAR (40 Days)

BIOS

• BIOS ROM: 2 x 128 Mb Flash

• Type: UEFI AMI BIOS

• Features:

  • ASUS EZ Flash

  • CrashFree BIOS 3

  • EZ Mode Interface

  • ASUS MyHotkey

Special Features

• ASUS 5X Protection III:

  • DIGI+ VRM

  • LANGuard

  • Overvoltage Protection

  • SafeSlot

  • Stainless Steel Back I/O

• Q-Design:

  • Q-Antenna

  • Q-LED Diagnostic Indicators

  • Q-DIMM Latches

  • Q-Slot for GPUs

• Thermal Management:

  • M.2 Heatsink

  • VRM Heatsink

• DIY Friendly:

  • ProCool Power Connectors

  • Pre-mounted I/O Shield

• Aura Sync Support:

  • 1 x Aura RGB Header

  • 3 x Addressable Gen 2 RGB Headers

Accessories Included

• 2 x SATA 6Gb/s Cables

• 1 x ASUS WiFi Q-Antenna

• 1 x M.2 Rubber Package

• 1 x M.2 Screw Package

• 1 x Quick Start Guide