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ASUS PRIME B860M-A WIFI motherboard with Intel Ultra 5 245K CPU and thermal grease tube

ASUS

ASUS PRIME B860M-A WIFI-CSM Intel Motherboard & Ultra 5 245K CPU Combo

SKU CH-91BC-MXQ8T

mATX motherboard with Intel Core Ultra 5 245K CPU, DDR5 support, PCIe 5.0 x16, WiFi 6E and 2.5Gb Ethernet

  • CPU Socket TypeLGA 1851
  • CPU TypeSupport Intel® Core™ Ultra Processors (Series 2) , LGA1851*
  • ChipsetIntel B860
  • Number of Memory Slots4x288pin (DDR5)
  • Memory Standard4 x DIMM slots, max. 192GB, DDR5 Supports up to 8400+MT/s (O
  • Maximum Memory Supported192GB

model PRIME B860M-A WIFI

+CPU +Ultra 5 245K

  • Ready for Intel Core Ultra Series 2 processors with LGA 1851 socket
  • Robust 7+1+1+1 80A DrMOS power stages for stable delivery
  • PCIe 5.0 x16 slot plus PCIe 5.0 M.2 for fastest graphics and storage
  • WiFi 6E and Realtek 2.5Gb Ethernet for high-speed networking
  • DDR5 support up to 192GB across four DIMM slots

Ready for Intel Core Ultra Series 2

This bundle pairs the ASUS PRIME B860M-A WIFI motherboard with an Intel Ultra 5 245K processor and Shin-Etsu X-23-7868-2D thermal grease. The board uses the Intel B860 chipset and LGA 1851 socket, supporting Intel Core Ultra Processors (Series 2). It delivers a 7+1+1+1 80A DrMOS power design with an 8-pin ProCool connector for stable delivery.

Suits builders who want AI-ready performance

The combination targets users building advanced AI PCs who value long-term platform stability from the ASUS Corporate Stable Model programme. It is not aimed at buyers needing larger ATX form factors, extra PCIe 5.0 x16 slots, or integrated CPU cooling beyond the supplied thermal grease.

Included grease and board features simplify

Shin-Etsu X-23-7868-2D thermal compound is provided for immediate CPU installation. The motherboard adds Q-Dashboard, Q-DIMM, Q-LED Core and Q-slot for easier assembly, plus Fan Xpert 2+ headers, enlarged VRM heatsinks, an M.2 heatsink and a PCH heatsink for thermal management.

Points forts

  • Ready for Intel Core Ultra Series 2 processors with LGA 1851 socket
  • Robust 7+1+1+1 80A DrMOS power stages for stable delivery
  • PCIe 5.0 x16 slot plus PCIe 5.0 M.2 for fastest graphics and storage
  • WiFi 6E and Realtek 2.5Gb Ethernet for high-speed networking
  • DDR5 support up to 192GB across four DIMM slots

Caractéristiques

BrandASUS
SeriesPrime
ModelPRIME B860M-A WIFI+Ultra 5 245K
Part NumberPRIME B860M-A WIFI+Ultra 5 245K
CPU Socket TypeLGA 1851
CPU TypeSupport 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.
ChipsetIntel B860
Number of Memory Slots4x288pin (DDR5)
Memory Standard4 x DIMM slots, max. 192GB, DDR5
Supports up to 8400+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/.
* Non-ECC, un-buffered DDR5 memory su
Maximum Memory Supported192GB
Channel SupportedDual Channel
PCI Express 5.0 x161 x PCI Express 5.0 x16
PCI Express 4.0 x161 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.
Serial ATA (SATA)4 x SATA 6Gb/s
M.2Total 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)
SATA RAID0/1/5/10
Audio ChannelsRealtek 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.
Max LAN Speed1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
Wireless LANWi-Fi 6E
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band*
Bluetooth® v5.3**
* WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later
** The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications.
BluetoothYes
Back I/O Ports1 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 Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
Other ConnectorsFan 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 additional USB 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 Pane
Windows 11Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)
Form FactorMicro ATX
Dimensions (W x L)9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
FeaturesASUS 5X PROTECTION III
- DIGI+ VRM (- Digital power design with DrMOS)
- ESD Guards
- LANGuard
- Overvoltage protection
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- 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

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Questions sur cet article

What DDR5 memory speed and capacity do I need to match the board's 8400+ MT/s OC support and 192 GB limit?

Install up to four DDR5 CUDIMM modules for a total of 192 GB; the board runs them at speeds up to 8400+ MT/s when XMP is enabled.

Will my existing PCIe 4.0 graphics card and SATA SSDs work in the PCIe 5.0 x16 slot and the four SATA 6 Gb/s ports?

Yes, the PCIe 5.0 x16 slot is backward compatible with PCIe 4.0 cards, and the four SATA 6 Gb/s ports accept current SATA SSDs and HDDs.

How can I confirm the Wi-Fi 6E and 2.5 Gb Ethernet links are active after the build?

Check Device Manager for the Wi-Fi 6E adapter and Realtek 2.5 Gb Ethernet controller, then verify a 6 GHz connection and a 2.5 Gb/s link speed in the network status panel.

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