ASUS Prime series motherboards are expertly designed to realise the full potential of AMD Ryzen 9000 series processors. The PRIME B850-PLUS-CSM motherboard offers users and PC DIY builders a range of performance optimisations through intuitive software and firmware functions. It is designed to be advanced AI PC-ready, providing the performance and connectivity required for demanding AI applications.
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 | Front panel audio connector, Thunderbolt header, Trusted Platform Module |
Item number | 57493475 |
Manufacturer | ASUS |
Category | Motherboards |
Manufacturer no. | 90MB1LC0-M0EAYC |
Release date | 8.4.2025 |
Sales rank in Category Motherboards | 420 of 1041 |
Form factor | ATX |
Socket | AM5 |
Chipset | AMD B850 |
Mainboard features | Front panel audio connector, Thunderbolt header, Trusted Platform Module |
Operating system compatibility | Windows 10, Windows 11 Home, Windows 11 Pro |
BIOS type | UEFI AMI |
Processor family | Ryzen 7th Gen, Ryzen 8th Gen, Ryzen 9th Gen |
Memory form factor | DIMM |
Number of memory modules (RAM) | 4 x |
Max. memory (RAM) | 256 GB |
Memory chip | DDR5-5200 |
Max. RAM OC | 8000 MHz |
Memory type | DDR5 RAM |
RAM buffer | Unbuffered |
Video connections | DisplayPort (1x), HDMI (1x) |
Video connection version | HDMI 1.0 |
Network connections | RJ45 2.5 Gigabit Ethernet (1x) |
Max. port speed | 2.50 Gbit/s |
Audio channel | 7.1 Channel |
Audio Connections | Jack 3.5mm Line In (1x), Microphone |
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) |
PCI express version (max.) | 5 |
Number of fan connector | 5 |
USB ports | USB-A, USB-C |
Exact USB ports | USB-A 2.0 (2x), USB-A 3.2 Gen 1 (2x), USB-A 3.2 Gen 2 (3x), USB-C 3.2 Gen 2 (1x) |
Power connectors | 12VHPWR |
Country of origin | China, Germany, Taiwan |
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 | |
Climate contribution |
Scope of delivery | 1 piece |
Length | 244 mm |
Width | 305 mm |
Height | 48 mm |
Weight | 1030 g |
Length | 45 cm |
Width | 12 cm |
Height | 35 cm |
Weight | 600 g |
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Source: Digitec Galaxus