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Rectangular ATX motherboard with dark PCB, silver heatsinks and rear I/O shield

ASUS

ASUS PRIME B860-PLUS WIFI-CSM Intel motherboard CSM

SKU CH-A7PR-5EENT MPN PRIME B860-PLUS WIFI-CSM

LGA 1851 ATX board for Intel Core Ultra Series 2 with DDR5 up to 8200 MT/s, PCIe 5.0 x16, dual M.2, WiFi 6E, 2.5 Gb Ethernet and USB 20 Gbps Type-C

  • CPU Socket TypeLGA 1851
  • CPU TypeIntel Core Ultra Processors (Series 2)
  • ChipsetIntel B860
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardSupport up to 8200+MT/s (OC)
  • Maximum Memory Supported256GB
  • Supports Intel Core Ultra Series 2 processors with LGA 1851 socket
  • DDR5 memory up to 8200 MT/s across four slots with XMP 3.0
  • PCIe 5.0 x16 slot and PCIe 5.0 M.2 with heatsink for fast graphics and storage
  • WiFi 6E and 2.5 Gb Ethernet plus Bluetooth 5.3 for high-speed networking
  • ASUS Control Center Express and CSM program for enterprise IT management

Ready for Intel Core Ultra Series 2

The ASUS PRIME B860-PLUS WIFI-CSM is an ATX motherboard built for the LGA 1851 socket and Intel Core Ultra Processors (Series 2). It targets system builders and IT departments that need a stable, long-life platform backed by the ASUS CSM programme. The board delivers robust power through 8+1+1+1 80A DrMOS stages and an 8-pin ProCool connector.

ASUS Control Center Express and CSM support

The bundled ASUS Control Center Express software provides integrated IT monitoring and remote management for enterprise administration. The CSM programme adds a stable motherboard supply chain, end-of-life notifications and validated longevity for business deployments. These tools reduce fleet overhead without adding hardware cost.

DDR5 up to 8200 MT/s and dual M.2 slots

Four DDR5 slots support up to 256 GB in dual-channel mode with Intel XMP 3.0 profiles reaching 8200+ MT/s when overclocked. Storage headroom comes from one PCIe 5.0 x4 M.2 slot (2242/2260/2280) with a heatsink and one PCIe 4.0 x4 M.2 slot (2242/2260/2280/22110). Four SATA 6Gb/s ports add further capacity.

Highlights

  • Supports Intel Core Ultra Series 2 processors with LGA 1851 socket
  • DDR5 memory up to 8200 MT/s across four slots with XMP 3.0
  • PCIe 5.0 x16 slot and PCIe 5.0 M.2 with heatsink for fast graphics and storage
  • WiFi 6E and 2.5 Gb Ethernet plus Bluetooth 5.3 for high-speed networking
  • ASUS Control Center Express and CSM program for enterprise IT management

Specifications

BrandASUS
ModelPRIME B860-PLUS WIFI-CSM
CPU Socket TypeLGA 1851
CPU TypeIntel Core Ultra Processors (Series 2)
ChipsetIntel B860
Number of Memory Slots4x288pin (DDR5)
Memory StandardSupport up to 8200+MT/s (OC)
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 3.0
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)
3 x PCIe 4.0 x16 slots (support x1 mode)
Serial ATA (SATA)4 x SATA 6Gb/s
M.2Intel 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 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)
SATA RAID* Intel 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
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 Speed2.5Gbps
Wireless LANWi-Fi 802.11 ax
BluetoothBluetooth 5.3
Back I/O Ports1 x USB 20Gbps port (1 x USB Type-C)
2 x USB 10Gbps ports (2 x Type-A)
1 x USB 5Gbps port (1 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
Onboard USB1 x USB 5Gbps 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
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
4 x 4-pin Chassis Fan headers
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 (14-1pin)
1 x 10-1 pin Front System Panel header
1 x Thunderbolt (USB4) header
BIOS Feature2 x 128 Mb Flash ROM, UEFI AMI BIOS
SoftwareASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 2+
- Power Saving
ASUS DriverHub
ASUS GlideX
ASUS CPU-Z
Norton 360 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
Windows 11Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
FeaturesASUS 5X PROTECTION III
-DIGI+ VRM (- Digital power design with DrMOS)
- LANGuard
- Overvoltage Protection
- SafeSlot
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- 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 Gen 2 headers
Shipping weight1.54 kg
Package size362 × 277 × 71 mm

Questions about this item

Will the M.2_1 heatsink need to be replaced if I upgrade to a hotter PCIe 5.0 SSD?

The board ships with one M.2 heatsink on the PCIe 5.0 slot; it is not user-serviceable, so a hotter drive would rely on case airflow rather than a swap.

What caps the PCIe 5.0 x16 slot bandwidth during long GPU workloads?

The single PCIe 5.0 x16 lane from the CPU is the hard ceiling; sustained throughput cannot exceed that link.

How loud and hot does the 8+1+1+1 80A DrMOS VRM get under all-day load?

The 80A DrMOS stages and alloy chokes are rated for continuous delivery; actual noise and temperature depend on your cooler and chassis airflow.

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