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ATX motherboard in dark grey with silver heatsinks and a rear I/O shield

ASUS

ASUS PRIME B860-PLUS WIFI-CSM Intel motherboard

SKU CH-CPDW-1RC79 MPN PRIME B860-PLUS WIFI-CSM

ATX board for Intel Core Ultra Series 2 with DDR5 to 8200 MT/s, PCIe 5.0 graphics and M.2, WiFi 6E, 2.5Gb LAN, USB 20Gbps Type-C and ASUS Control Center Express

  • 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)
  • Ready for Intel Core Ultra Series 2 processors with LGA 1851 socket
  • 8200 MT/s DDR5 overclocking across four slots up to 256 GB
  • PCIe 5.0 x16 graphics slot plus PCIe 5.0 M.2 with heatsink
  • WiFi 6E and 2.5 Gb Ethernet with Bluetooth 5.3
  • ASUS Control Center Express for remote IT management

Intel Core Ultra Series 2 Ready

The ASUS PRIME B860-PLUS WIFI-CSM is an ATX motherboard built for the LGA 1851 socket and Intel B860 chipset. It supports Intel Core Ultra Processors (Series 2) with a 8+1+1+1 80A DrMOS power design and ProCool connector. Four DDR5 slots accept up to 256GB at speeds up to 8200+ MT/s via XMP 3.0. Connectivity includes WiFi 6E, Bluetooth 5.3 and 2.5Gb Ethernet.

Compatibility Checklist

Verify that your CPU is an Intel Core Ultra Series 2 processor for the LGA 1851 socket. Ensure the chassis fits an ATX board and that the power supply provides an 8-pin EPS connector. Confirm DDR5 modules are on the vendor QVL for 8200+ MT/s operation. Check case front-panel headers for a USB 5Gbps Type-C connector and allow space for the M.2 heatsink on the primary slot.

Business Builders and AI Workstations

IT managers gain ASUS Control Center Express for remote monitoring and CSM programme stability with end-of-life notices. Creators and AI developers benefit from PCIe 5.0 x16, a PCIe 5.0 M.2 slot, USB 20Gbps Type-C and quad-channel 7.1 audio. Budget gamers or legacy peripheral users lacking DDR5 or LGA 1851 CPUs should consider alternative platforms.

How it compares

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

Price $130.99
Pricier than about 65% of the 2,965 comparable items (median $97.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

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

What comes in the box with the ASUS PRIME B860-PLUS WIFI-CSM and do I need to buy a Wi-Fi antenna separately?

The motherboard ships with a rear Wi-Fi module included, so no separate antenna purchase is required for the on-board WiFi 6E and Bluetooth 5.3 connectivity.

Should I choose the PCIe 5.0 M.2 slot or the PCIe 4.0 M.2 slot for my primary OS drive?

Use the M.2_1 slot (Key M, type 2242/2260/2280) which supports PCIe 5.0 x4 mode for the fastest boot and application load times; the M.2_2 slot runs at PCIe 4.0 x4 and also accepts 22110-length drives.

What does the 8200+ MT/s DDR5 memory rating mean once the board is built into a working PC?

It indicates the maximum overclocked data rate supported via Intel XMP 3.0 profiles on the four 288-pin slots; actual speed depends on the memory kit and CPU memory controller, with dual-channel operation up to 256 GB total capacity.

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