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ASUS PRIME B860M-A-CSM
ASUS · Motherboard

ASUS PRIME B860M-A-CSM

B860 · LGA1851 (Socket V1) · mATX · DDR5

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  • Chipset B860
  • Form factor mATX
  • Memory slots 4
  • Max memory 256 GB
  • Socket LGA1851 (Socket V1)
  • Memory type DDR5

ASUS PRIME B860M-A-CSM is a mATX and B860 chipset motherboard for LGA1851 (Socket V1) processors and DDR5 memory. It came out in 2024.

Released
2024-12-10
Socket
LGA1851 (Socket V1)

Specifications

Key specs

Chipset
B860
Form factor
mATX
Memory slots
4
Max memory
256 GB
Socket
LGA1851 (Socket V1)
Memory type
DDR5
Released
2024-12-10
Part number
90MB1K00-M0EAYC
EAN / UPC
4711387819869

Processor

Processor manufacturer
Intel
Processor socket
LGA 1851 (Socket V1)
Compatible processor series
Intel Core Ultra (Series 2)

Memory

Supported memory types
DDR5-SDRAM
Number of memory slots
4
Memory slots type
DIMM
Memory channels
Dual-channel
ECC сompatibility
Non-ECC
Supported memory clock speed (max)
8666 MHz
Maximum internal memory
256 GB
Unbuffered memory
Yes
View all specifications +10 more sectionsShow fewer specifications

Storage controllers

Supported storage drive types
HDD & SSD
Supported storage drive interfaces
M.2, SATA III
Number of HDDs supported
4
Number of storage drives supported
6
RAID support
Yes
RAID levels
0, 1, 5, 10

Graphics

Parallel processing technology support
Not supported

Internal I/O

USB 2.0 connectors
1
USB 3.2 Gen 1 (3.1 Gen 1) connectors
1
USB 3.2 Gen 2 (3.1 Gen 2) connectors
1
Number of SATA III connectors
4
S/PDIF out connector
Yes
Front panel audio connector
Yes
ATX Power connector (24-pin)
Yes
CPU fan connector
Yes
Number of CPU fan connectors
1
Number of chassis fan connectors
3
Chassis intrusion connector
Yes
EPS power connector (8-pin)
Yes
Number of COM connectors
1
TPM connector
Yes
Thunderbolt headers
1
12V power connector
Yes

Rear panel I/O ports

USB 2.0 ports quantity
4
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
1
USB 3.2 Gen 2x2 Type-C ports quantity
1
Ethernet LAN (RJ-45) ports
1
HDMI ports quantity
1
DisplayPorts quantity
2
Line-in
Yes
Microphone in
Yes

Network

Ethernet LAN
Yes
Ethernet interface type
2.5 Gigabit Ethernet
Top Wi-Fi standard
Not available

Features

Motherboard chipset
Intel B860
Audio output channels
7.1 channels
Product colour
Multicolour
Component for
PC
Motherboard form factor
micro ATX
Motherboard chipset family
Intel
Windows operating systems supported
Windows 10 x64, Windows 11

Expansion slots

PCI Express x1 (Gen 4.x) slots
1
PCI Express x16 (Gen 4.x) slots
1
Number of M.2 (M) slots
2

BIOS

BIOS type
UEFI AMI
BIOS memory size
256 Mbit

Weight & dimensions

Width
244 mm
Depth
244 mm
Height
50 mm

Other features

Weight
815 g

Check the manufacturer's page before buying.

Ready to buy? Get the ASUS PRIME B860M-A-CSM at today's price.Buy now on Amazon

Compatible processors

LGA1851 (Socket V1) socket

None in the catalog yet.

Compatible memory

DDR5

About this product

PRIME B860M-A-CSM

ASUS PRIME series motherboards are expertly engineered to unleash the full potential of the latest Intel® Core™ Ultra Processors (Series 2). Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, the PRIME B860M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

User manual (PDF)

PRIME B860M-A-CSM vs similar motherboards

ASUS PRIME B860M-A-CSMASUS PRO B860M-C-CSMASUS PRO B860M-CT-CSMASUS B860M MAX GAMING AX
ChipsetB860B860B860B860
Form factormATXmATXmATXmATX
Memory slots4444
Max memory256 GB256 GB256 GB256 GB
SocketLGA1851 (Socket V1)LGA1851 (Socket V1)LGA1851 (Socket V1)LGA1851 (Socket V1)
Memory typeDDR5DDR5DDR5DDR5
Released2024202520252025

Questions about the PRIME B860M-A-CSM

What are the main specs of the ASUS PRIME B860M-A-CSM?

B860, LGA1851 (Socket V1), mATX, DDR5, 4 RAM slots.

Which chipset does the ASUS PRIME B860M-A-CSM use?

B860.

What form factor is the ASUS PRIME B860M-A-CSM?

mATX.

Which socket does the ASUS PRIME B860M-A-CSM use?

LGA1851 (Socket V1).

When did the ASUS PRIME B860M-A-CSM come out?

It was released in 2024/12 (ASUS).

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