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| Basic Information | |
| Supported CPU | Supports AMD Ryzen 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G) and AMD Ryzen 4000 G-Series desktop processors |
| Chipset | AMD B550 Chipset |
| Form Factor | Micro ATX |
| Audio | 7.1-Channel High Definition Audio |
| Expansion Slots | |
| PCI | E (Gen4 / Gen3) |
| M.2 Socket | 1 x M.2 Socket |
| Memory | |
| Type | A ports on the back panel, 4 ports through the internal USB 2.0 connectors) |
| Slots | Key) |
| Supported Memory | 2x DDR4 memory slots, support up to 64GB |
| Maximum Memory | 64GB |
| Graphics | |
| Graphics | 1x HDMI 2.1 port, supports a maximum resolution of 4096x2160 @60Hz; 1x DVI-D port, supports a maximum resolution of 1920x1200@60Hz |
| Connector & Ports | |
| HDMI | 1 x HDMI |
| DVI-D (s) | 1x DVI-D port |
| USB (s) | 2x USB 3.2 Gen 1 5Gbps ports; 6x USB 2.0 ports; 4x USB 3.2 Gen 1 5Gbps Type-A ports |
| LAN Port (s) | 1x Realtek RTL8111H Gigabit LAN |
| Supported Storage | 4x SATA 6Gb/s ports; 1x M.2 slot (Key M); Supports PCIe 4.0/ 3.0; Supports SATA 6Gb/s; Supports 2242/ 2260/ 2280 storage devices |
| Audio | 7.1-Channel High Definition Audio |
| RAID | Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices; Supports RAID 0 and RAID 1 for M.2 NVMe storage devices |
| Internal I/O Ports | 1x 24-pin ATX main power connector; 1x 4-pin ATX 12V power connector; 4x SATA 6Gb/s connectors; 1x M.2 slots (M-Key); 1x USB 3.2 Gen 1 5Gbps connector; 2x USB 2.0 connectors; 1x 4-pin CPU fan connector; 1x 4-pin system fan connectors; 1x Front panel audio connector; 2x System panel connectors; 1x Chassis Intrusion connector; 1x Clear CMOS jumper |
| TPM (Trusted Platform Module ) | 1 x TPM module connector |
| Warranty Information | |
| Warranty | 3 Years Warranty |
The MSI B550M-A PRO DDR4 AMD AM4 Micro ATX Motherboard is a powerful and versatile motherboard designed for users who demand high performance and reliability. This motherboard supports AMD Ryzen 5000 and 3000 series desktop processors, providing a solid foundation for building a high-performance PC. With its compact Micro ATX form factor, it fits perfectly into smaller cases while still offering ample expansion options. The B550 chipset ensures compatibility with the latest technologies, including PCIe 4.0, which allows for faster data transfer rates and improved performance for gaming and professional applications. The motherboard features dual-channel memory architecture, supporting up to 64GB of DDR4 memory, which is essential for multitasking and running memory-intensive applications. Additionally, it comes equipped with multiple USB ports, including USB 3.2 Gen 1, ensuring that you can connect all your peripherals without any hassle. The HDMI and DVI-D ports provide excellent video output options, making it suitable for both gaming and professional use. With a 3-year manufacturing warranty, you can trust in the durability and reliability of the MSI B550M-A PRO motherboard, making it an excellent choice for your next build.