B550-A PRO_x000D_ 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_x000D_ Supports DDR4 Memory, up to 4400(OC) MHz_x000D_ Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2_x000D_ Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop works_x000D_ Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost_x000D_ Audio Boost: Reward your ears with studio grade sound quality_x000D_ Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire™_x000D_ Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface.