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ASUS

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

  • CPU Socket TypeLGA 1851
  • CPU TypeSupport Intel® Core™ Ultra Processors (Series 2) , LGA1851*
  • ChipsetIntel B860
  • Number of Memory Slots4x288pin (DDR5)
  • Memory Standard4 x DIMM slots, max. 192GB, DDR5 Supports up to 8400+MT/s (O
  • Maximum Memory Supported192GB
  • 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.

Points forts

  • 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

Caractéristiques

BrandASUS
SeriesPrime
ModelPRIME B860M-A WIFI-CSM
Part Number90MB1JY0-M0AAYC
CPU Socket TypeLGA 1851
CPU TypeSupport Intel® Core™ Ultra Processors (Series 2) , LGA1851*
Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0**
* Refer to https://www.asus.com/support/download-center/ for CPU support list.
** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types.
ChipsetIntel B860
Number of Memory Slots4x288pin (DDR5)
Memory Standard4 x DIMM slots, max. 192GB, DDR5
Supports up to 8400+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(AEMPIII)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/.
* Non-ECC, un-buffered DDR5 memory su
Maximum Memory Supported192GB
Channel SupportedDual Channel
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)
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.
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)
SATA RAID0/1/5/10
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 Speed1 x Realtek 2.5Gb Ethernet
ASUS LANGuard
Wireless LANWi-Fi 6E
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band*
Bluetooth® v5.3**
* WiFi 6E 6GHz 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.
BluetoothYes
Back I/O Ports1 x USB 20Gbps port (1 x USB Type-C®)
1 x USB 10Gbps port (1 x Type-A)
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A )
2 x DisplayPort
1 x HDMI™ port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
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
3 x 4-pin Chassis Fan headers
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
Storage Related
2 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
USB
1 x USB 10Gbps 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
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 Pane
Windows 11Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)
Form FactorMicro ATX
Dimensions (W x L)9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
FeaturesASUS 5X PROTECTION III
- DIGI+ VRM (- Digital power design with DrMOS)
- ESD Guards
- LANGuard
- Overvoltage protection
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED Core
- 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 Gen2 headers
Poids d’expédition1.20 kg
Dimensions du colis279 × 279 × 76 mm

Questions sur cet article

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.

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