ASUS Prime B850M-A-CSM

AM5, AMD B850, mATX
Ratings
Delivered between Tue, 2.9. and Wed, 3.9.
8 pieces in stock at third-party supplier
Supplied by
free shipping

Product details

The ASUS PRIME B850M-A-CSM is a powerful Micro-ATX motherboard designed for the latest AMD AM5 series processors. It supports modern DDR5 memory with speeds of up to 8000 MHz and accommodates up to four RAM modules. With a variety of connectivity options, including PCI-Express 4.0 and 5.0 slots as well as multiple M.2 slots, this motherboard allows for a flexible and high-performance setup for gaming and productivity applications. The integrated video outputs, including HDMI and DisplayPort, along with a comprehensive selection of USB ports, ensure versatile connections to peripherals. Additionally, the motherboard supports RAID configurations and features a 2.5 Gigabit LAN connection, making it an excellent choice for users who prioritize speed and reliability.

  • Support for DDR5 RAM with speeds up to 8000 MHz
  • Variety of expansion slots, including PCI-Express 4.0 and 5.0
  • Three M.2 slots for fast storage
  • Integrated 2.5 Gigabit LAN connection for high network speed
  • Support for RAID configurations (SATA 0, 1, 5, 10).

Key specifications

Processor family
Ryzen 7th Gen, Ryzen 8th Gen, Ryzen 9th Gen
Memory type
DDR5 RAM
Number of memory modules (RAM)
4 x
Internal connection options
M.2 PCIe (3x), S-ATA III (4x)
Mainboard features
Trusted Platform Module
Item number
58960852

General information

Manufacturer
ASUS
Category
Motherboards
Manufacturer no.
90MB1LQ0-M0EAYC
Release date
27.5.2025

Motherboard properties

Form factor
Micro ATX (mATX)
Socket
AM5
Chipset
AMD B850
Mainboard features
Trusted Platform Module
BIOS type
UEFI

Processor

Processor family
Ryzen 7th Gen, Ryzen 8th Gen, Ryzen 9th Gen

Memory

Memory form factor
DIMM
Number of memory modules (RAM)
4 x
Max. memory (RAM)
256 GB
Memory chip
DDR5
Max. RAM OC
8000 MHz
Supported memory speed
8000 MHz
Memory type
DDR5 RAM
RAM buffer
Unbuffered

Graphics properties

Video connections
DisplayPort (2x), HDMI (1x)
Video connection version
Display port 1.4, HDMI 2.1

Network

Network connections
RJ45 2.5 Gigabit Ethernet (1x)
Max. port speed
2.50 Gbit/s

Audio

Audio channel
3.0 Channel
Audio Connections
Jack 3.5mm Line In (1x), Jack 3.5mm Line Out (1x), Jack 3.5mm Microphone In (1x)

Data storage

RAID configuration
0, 1, 10

Internal interfaces

Internal connection options
M.2 PCIe (3x), S-ATA III (4x)
Expansion slot
PCI Express x16 (Gen 4) (1x), PCI Express x16 (Gen 5) (1x)
PCI express version (max.)
5

Further connections

USB ports
USB-A
Exact USB ports
USB-A 2.0 (4x), USB-A 3.2 Gen 1 (2x), USB-A 3.2 Gen 2 (2x)

Origin

Country of origin
Germany

Voluntary climate contribution

CO₂-Emission
Climate contribution

Scope of delivery

Scope of delivery
1 piece

Product dimensions

Length
244 mm
Width
244 mm
Height
244 mm

30-day right of return
36 Months Warranty (Bring-in)
6 additional offers

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Motherboards» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 2.Gigabyte
    2.7 %
  • 3.AsRock
    2.8 %
  • 3.ASUS
    2.8 %
  • 5.Supermicro
    2.9 %
  • 6.NZXT
    4.8 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 3.MSI
    2 days
  • 3.Supermicro
    2 days
  • 5.Gigabyte
    5 days
  • 6.NZXT
    6 days
  • 7.ASUS
    9 days

Return rate

How often is a product of this brand in the «Motherboards» category returned?

Source: Digitec Galaxus
  • 1.MSI
    4.8 %
  • 2.ASUS
    5 %
  • 2.Gigabyte
    5 %
  • 4.NZXT
    5.9 %
  • 5.AsRock
    6.2 %
Source: Digitec Galaxus