MSI B550M-A PRO AM4 Micro ATX AMD Motherboard The MSI B550M-A PRO AM4 Micro ATX AMD Motherboard 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 Supports DDR4 Memory up to 4600 OC MHz It has a premium layout and digital power design to support more cores and provide better performance Made with 2oz Thickened Copper PCB An enhanced PCB design improves heat dissipation and performance reliability For the superior sound quality it has studio-grade sound quality All new dragon center software which integrates all MSI exclusive tools with the user-friendly user interface. Specifications 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 Audio Realtek ALC892/ALC897 Codec Expansion Slots PCI PCI-E X16 x 1 PCI-E (Gen4 / Gen3) M.2 Socket 1 x M.2 Socket Memory Type DDR4 Slots 1x PCIe 3.0 x1 slot 1 1x PCIe 4.0/3.0 x16 slot The supported specification depends on the installed processor. Supported Memory 2x DDR4 memory slots, support up to 64GB 1 Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC Supports DDR4 2667/ 2800 /2933 /3000 /3066 /3200 /3466 /3600/ 3733 /3866 /4000 /4133 /4266 /4400/ 4600+ MHz by A-XMP OC MODE 1DPC 1R max speed 4600 MHz 1DPC 2R max speed 3866 MHz Dual-channel memory architecture non-ECC UDIMM memory ECC UDIMM memory (non-ECC mode) un-buffered memory 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 Available for the processor with integrated graphics. Graphics specifications may vary depending on the CPU installed. Max Shared Memory 16 GB Connector & Ports HDMI 1 x HDMI USB (s) AMD B550 Chipset 2x USB 3.2 Gen 1 5Gbps ports are available through the internal USB 3.2 Gen 1 5Gbps connector 6x USB 2.0 ports (2 Type-A ports on the back panel, 4 ports through the internal USB 2.0 connectors) AMD Processor 4x USB 3.2 Gen 1 5Gbps Type-A ports on the back panel LAN Port (s) 1x Realtek RTL8111H Gigabit LAN Supported Storage AMD B550 Chipset 4x SATA 6Gb/s ports 1x M.2 slot (Key M) (from AMD Processor) PCIe 4.0/ 3.0 SATA 6Gb/s 2242/ 2260/ 2280 storage devices The supported specification depends on the installed processor.Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices Supports RAID 0 and RAID 1 for M.2 NVMe storage devices Audio 7.1-Channel High Definition Audio 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 (supports additional 2 USB 3.2 Gen 1 5Gbps ports) 2x USB 2.0 connectors (supports additional 4 USB 2.0 ports) 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 Manufacturing Warranty 3 Years Warranty  ..