ASUS Prime B850M-A-CSM
AM5, AMD B850, mATX9 pieces in stock at supplier
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 configuration 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).
Mainboard features | Trusted Platform Module |
Number of memory modules (RAM) | 4x |
Memory type | DDR5 RAM |
Internal connection options | M.2 PCIe (3x), S-ATA III (4x) |
Item number | 58960852 |
Manufacturer | ASUS |
Category | Motherboards |
Manufacturer no. | 90MB1LQ0-M0EAYC |
Release date | 8-4-2025 |
Form factor | Micro ATX (mATX) |
Socket | AM5 |
Chipset | AMD B850 |
Mainboard features | Trusted Platform Module |
Memory form factor | DIMM |
Number of memory modules (RAM) | 4x |
Max. memory (RAM) | 256 GB |
Max. RAM OC | 8000 MHz |
Memory type | DDR5 RAM |
RAM buffer | Unbuffered |
Video connections | DisplayPort (2x), HDMI (1x) |
Video connection version | Display port 1.4, HDMI 2.1 |
Network connections | RJ45 2.5 Gigabit Ethernet (1x) |
Max. port speed | 2.50 Gbit/s |
Audio Connections | Jack 3.5mm Line In (1x), Jack 3.5mm Line Out (1x), Jack 3.5mm Microphone In (1x) |
RAID configuration | 0, 1, 10 |
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) |
Exact USB ports | USB-A 2.0 (4x), USB-A 3.2 Gen 1 (2x), USB-A 3.2 Gen 2 (2x) |
Country of origin | China |
Manufacturer commitment | RE100, SBTi |
Manufacturer compensation | According to RE100, the manufacturer ASUS fully compensates for its energy consumption, leading to a reduction in emissions. |
CO₂-Emission | 520,56 kg |
Climate contribution | EUR 9,26 |
Length | 244 mm |
Width | 244 mm |
Product Safety |
Length | 27 cm |
Width | 27 cm |
Height | 8 cm |
Weight | 1.39 kg |
30-day right of return
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Reviews & Ratings
Statutory warranty score
How often does a product of this brand in the «Motherboards» category have a defect within the first 24 months?
Source: Galaxus- 1.MSI2,4 %
- 2.Gigabyte2,5 %
- 3.ASUS2,6 %
- 4.AsRock2,8 %
- 5.Supermicro3,3 %
Statutory 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: Galaxus- 1.Biostar2 days
- 2.AsRock4 days
- 3.MSI5 days
- 4.ASUS8 days
- 5.Gigabyte11 days
Return rate
How often is a product of this brand in the «Motherboards» category returned?
Source: Galaxus- 1.MSI4,6 %
- 2.Gigabyte4,9 %
- 3.ASUS5 %
- 4.AsRock5,9 %
- 5.Biostar8,1 %