ASUS PRIME B840M-A-CSM is a Micro-ATX motherboard designed to fully leverage the potential of AMD Ryzen™ 9000 series processors. It offers an 8+2+1-phase digital power supply, four DDR5 memory slots, and PCIe 4.0 support, ensuring excellent performance and stability. The motherboard also features a 2.5 Gb Ethernet connection for fast networking and versatile ports, including a USB 5 Gbps Type-C® port. Thanks to the ASUS Corporate Stable Model (CSM) program, the motherboard provides up to 36 months of product lifecycle support and includes the ASUS Control Center Express management software, which facilitates IT management in corporate environments.

Technical specifications:

• Model name: PRIME B840M-A-CSM
• Form factor: Micro-ATX
• Processor support: AMD Ryzen™ 9000, 8000, and 7000 series desktop processors
• Processor socket: AMD Socket AM5
• Chipset: AMD B840
• Expansion slots: 2 x PCIe 4.0 x16 slots, 2 x PCIe 3.0 x16 slots
• Display outputs: 1 x HDMI port, 2 x DisplayPort
• Storage: 3 x M.2, 4 x SATA 6 Gb/s
• Memory support: 4 x DIMM slots, up to 192 GB, DDR5, supports up to 8000+ MT/s (OC)
• USB ports: Rear panel: 2 x USB 10 Gbps (2 x Type-A), 1 x USB 5 Gbps (1 x Type-C), 4 x USB 2.0 (Type-A); Front panel: 1 x USB 5 Gbps (1 x Type-C), 1 x USB 5 Gbps, 2 x USB 2.0
• Network: Realtek 2.5 Gb
• Audio: Realtek 7.1 Surround Sound High Definition Audio CODEC