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Green rectangular mATX motherboard with silver heatsinks, four black DDR5 slots, one full-size PCIe slot, two M.2 covers

ASUS

ASUS PRO B860M-CT-CSM Intel motherboard

SKU CH-J527-XZ5NX MPN PRO B860M-CT-CSM

mATX board for Intel Core Ultra Series 2 processors with DDR5 memory up to 8666 MT/s, PCIe 5.0 x16 slot, dual M.2 slots, four SATA ports, 1 GbE LAN and onboard TPM

  • CPU Socket TypeLGA 1851
  • CPU TypeIntel Core Ultra Processors (Series 2)
  • ChipsetIntel B860
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardSupports up to 8666+ MT/s(OC)
  • Maximum Memory Supported256GB
  • Supports Intel Core Ultra Series 2 processors via LGA 1851 socket
  • DDR5 memory up to 8666 MT/s across four slots with 256 GB capacity
  • PCIe 5.0 x16 and M.2 5.0 x4 slots for high-speed expansion
  • Intel 1 Gbps LAN plus Realtek 7.1 surround audio for connectivity and sound
  • ASUS CSM programme with Control Center Express and TPM for business manageability

Business-Ready LGA 1851 mATX Board

The ASUS PRO B860M-CT-CSM is a micro-ATX motherboard built for Intel Core Ultra Series 2 processors on the LGA 1851 socket. It targets commercial deployments that require long-term supply stability and integrated IT management tools. The board delivers the B860 chipset feature set in a compact form factor suitable for space-constrained workstations.

Thermals and Power in Daily Operation

The platform runs cool under typical office workloads thanks to the efficient B860 chipset and quality voltage-regulation components. Fan headers allow quiet cooling curves that keep acoustic output low during standard productivity tasks. Power draw remains modest with non-K series CPUs, keeping operational costs predictable for fleet rollouts.

DDR5 Memory Scaling to 8666 MT/s

Four DDR5 slots support dual-channel kits up to 256 GB total capacity with XMP 3.0 and AEMP III profiles. The memory controller validates speeds up to 8666 MT/s when overclocked, giving headroom for memory-intensive AI and content-creation workflows. This ceiling is the key figure for matching the right DRAM kit to the workload.

Points forts

  • Supports Intel Core Ultra Series 2 processors via LGA 1851 socket
  • DDR5 memory up to 8666 MT/s across four slots with 256 GB capacity
  • PCIe 5.0 x16 and M.2 5.0 x4 slots for high-speed expansion
  • Intel 1 Gbps LAN plus Realtek 7.1 surround audio for connectivity and sound
  • ASUS CSM programme with Control Center Express and TPM for business manageability

Caractéristiques

BrandASUS
ModelPRO B860M-CT-CSM
Part Number90MB1MBM-MVAAYC
CPU Socket TypeLGA 1851
CPU TypeIntel Core Ultra Processors (Series 2)
ChipsetIntel B860
Number of Memory Slots4x288pin (DDR5)
Memory StandardSupports up to 8666+ MT/s(OC)
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 3.0
Memory FeatureSupports 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 (AEMP III)
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)
PCI Express x11 x PCIe 4.0 x1 slot
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)
Intel B860 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 modes)
SATA RAIDIntel Rapid Storage Technology supports SATA RAID 0/1/5/10.
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
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Max LAN Speed1Gbps
Wireless LANM.2 slot only 2230 (Key E, CNVi & PCIe)*
*Wi-Fi module is sold separately.
Back I/O Ports1 x USB 10Gbps port (1 x USB Type-C)
1 x USB 10Gbps port (1 x Type-A)
2 x USB 2.0 ports (2 x Type-A )
2 x DisplayPort
1 x HDMI port
1 x PS/2 keyboard (purple) port
1 x PS/2 mouse (green) port
1 x Intel 1Gb Ethernet
3 x Audio jacks
Onboard USB1 x USB 10Gbps 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
Other ConnectorsFan and Cooling Related
1 x 4-pin CPU Fan header
2 x 4-pin Chassis Fan headers
Miscellaneous
1 x Clear CMOS header
1 x Chassis Intrude header
2 x COM Port headers
1 x Front Panel Audio header (AAFP)
1 x COM debug header
1 x LPT header
1 x Mono-Out Audio header (with Amp IC)
1 x M.2 slot (Key E)
1 x Speaker header
1 x SMBUS header
1 x 10-1 pin Front Panel System header
1 x SPI header(14-5 pin)
BIOS Feature256 (128+128) Mb Flash ROM, UEFI AMI BIOS
SoftwareASUS Exclusive Software
ASUS DriverHub
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash
- ASUS MyHotkey
Windows 11Windows 11 (22H2 & later), Windows 10 64-bit (21H2 & later)
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
FeaturesASUS Q-Design
- Q-LED Core
- Q-Slot
ASUS Thermal Solution
- Aluminum heatsink design
ASUS EZ DIY
- Box headers
- Dual DIMM clips
- SafeSlot
Bespoke Motherboard Design & Business Focused Features
- ASUS Self-Recovering BIOS
- ASUS Event Log
- ASUS Commercial BIOS Kit*
- Anti-moisture coating
- BIOS EZ Deploy
- 24/7 reliability
- Overcurrent protection
TXT support
TPM IC onboard
* Please contact local FAE for Commercial BIOS kit.
Package ContentsCables
2 x SATA 6Gb/s cables
Miscellaneous
1 x Screw package for M.2 SSD
1 x I/O Shield
1 x M.2 Key E screw package
Documentation
1 x ACC Express Activation Key Card
1 x Quick start guide
Poids d’expédition1.13 kg
Dimensions du colis279 × 279 × 76 mm

Questions sur cet article

How do I install the LGA 1851 CPU and what step is often missed?

Align the processor triangle with the socket marker, lower it gently, and close the retention lever; the step many miss is removing the plastic socket cover before placement.

What maintenance will the M.2_1 slot and its SSD need over time?

The slot itself needs no service; keep the M.2 SSD firmware updated and ensure the motherboard heatsink remains seated for thermal throttling protection.

What limit appears first when the Realtek 7.1 audio runs at 24-Bit/192 kHz continuously?

The 24-Bit/192 kHz DAC ceiling is reached before the Intel 1Gbps LAN or PCIe 5.0 x16 bandwidth under sustained multi-channel playback.

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