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

ASUS Open box

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

  • ProcessorIntel Core Ultra Processors (Series 2)
  • ChipsetIntel B860
  • Form factorATX
  • CPU socketLGA 1851
  • Memory slot count4 × 288pin (DDR5)
  • Supported memorySupport up to 8200+MT/s (OC)
  • 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.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $137.99
Pricier than about 68% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Model namePRIME B860-PLUS WIFI-CSM
Processor
ProcessorIntel Core Ultra Processors (Series 2)
CPU socketLGA 1851
ChipsetIntel B860
Memory
Memory slot count4 × 288pin (DDR5)
Supported memorySupport up to 8200+MT/s (OC)
Max supported RAM256 GB
Memory channelsDual Channel
Memory profilesIntel XMP 3.0
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsIntel 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 and RAID support* Intel Rapid Storage Technology supports SATA RAID 0/1/5/10.
Audio & video
Sound 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.
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 802.11 ax
Bluetooth support5.3
Ports & slots
PCIe 5.0 x16 slots1 x PCI Express 5.0 x16
PCIe 4.0 x16 slots1 x PCIe 4.0 x16 slot (supports x4 mode)
3 x PCIe 4.0 x16 slots (support x1 mode)
Onboard USB headers1 x USB 5 Gbit/s connector (supports USB Type-C)
1 x USB 5 Gbit/s header supports 2 additional USB 5 Gbit/s ports
1 x USB 2.0 header supports 2 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
1 × 8-pin +12 V CPU Power connector
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Shipping weight1.54 kg
Package size362 × 277 × 71 mm
Compatibility
Windows 11 support(22H2 & later), Windows 10 64-bit(21H2 & later)
More details
BIOS2 × 128 Mb Flash ROM, UEFI AMI BIOS

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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