We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
mATX motherboard, black PCB, silver heatsinks, LGA 1851 socket, four DDR5 slots

ASUS Open box

ASUS PRIME B860M-A WIFI-CSM B860 LGA 1851 mATX Intel motherboard

SKU CH-WC34-8HQGK MPN PRIME B860M-A WIFI-CSM

Micro-ATX board for Intel Core Ultra Series 2 with 192GB DDR5, Wi-Fi 6E, 2.5Gb Ethernet and 20Gbps USB-C

  • ProcessorSupport Intel® Core™ Ultra Processors (Series 2) , LGA1851*
  • ChipsetIntel B860
  • Form factorMicro ATX
  • CPU socketLGA 1851
  • Memory slot count4 × 288pin (DDR5)
  • Supported memory4 x DIMM slots, max. 192 GB, DDR5 Supports up to 8400+MT/s (
  • LGA 1851 socket readies the board for Intel Core Ultra Series 2 processors
  • 7+1+1+1 80A DrMOS stages deliver stable power for demanding workloads
  • PCIe 5.0 M.2 slot with heatsink enables high-speed storage
  • WiFi 6E and 2.5Gb Ethernet provide fast wired and wireless connectivity
  • Rear USB 20Gbps Type-C port adds ultrafast external bandwidth

Ready for Intel Core Ultra Series 2

The ASUS PRIME B860M-A WIFI-CSM is a micro-ATX motherboard built on the Intel B860 chipset with an LGA 1851 socket. It supports Intel Core Ultra Processors Series 2 and provides a 7+1+1+1 80A DrMOS power design for stable delivery. Four DDR5 DIMM slots accept up to 192 GB of memory with XMP and AEMP III support.

AI PC platform with fast I/O

The board suits builders who want a compact platform ready for advanced AI workloads and high-speed peripherals. It offers one PCIe 5.0 x16 slot, one PCIe 4.0 x16 slot running at x4, WiFi 6E, 2.5Gb Ethernet, rear USB 20Gbps Type-C, front USB 10Gbps Type-C and two M.2 slots with one heatsink. Buyers needing more than two M.2 drives or a full-size ATX layout should consider other models.

PCIe 5.0 M.2 slot for top storage speed

The primary M.2_1 slot connects through PCIe 5.0 x4 and supports 2242, 2260 and 2280 form factors, giving the highest available throughput for a single drive on this platform. The second M.2 slot runs at PCIe 4.0 speeds. This distinction decides whether the board matches a build centred on the fastest current storage.

How it compares

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

Price $92.99
Typical for this category: the median of 2,965 items is $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
Product linePrime
Model namePRIME B860M-A WIFI-CSM
Part number90MB1JY0-M0AAYC
Processor
CPU socketLGA 1851
ChipsetIntel B860
Memory
Memory slot count4 × 288pin (DDR5)
Max supported RAM192 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsTotal 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 and RAID support0/1/5/10
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 speed1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
Wi-Fi standardWi-Fi 6E
2 × 2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6 GHz frequency band*
Bluetooth® v5.3**
* WiFi 6E 6 GHz 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.
Bluetooth supportYes
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)
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.
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in (24.4 cm × 24.4 cm)
Shipping weight1.20 kg
Package size279 × 279 × 76 mm
Compatibility
Windows 11 support(22H2 & later), Windows 10 64-bit(21H2 & later)

Questions about this item

Will this board fit a standard micro-ATX case and what CPU power connector is required?

The micro-ATX form factor fits standard cases and the board uses a single 8-pin ProCool connector for CPU power.

Which M.2 slot runs at PCIe 5.0 speeds and is a heatsink included?

The M.2_1 slot supports PCIe 5.0 x4 mode and comes with a dedicated M.2 heatsink.

What is the maximum DDR5 capacity and speed this motherboard can handle?

Four slots support up to 192 GB of DDR5 and speeds up to 8400 MT/s when overclocked.

More in Motherboards for Intel CPUs

Similar items