MSI B550-A PRO AMD Ryzen B550 ATX DDR4 Motherboard - Socket AM4 PRO series helps users work smarter by delivering an efficient and productive experience. Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only less troubleshooting but also optimized professional workflows and longevity.Features- Support for 3rd Gen AMD Ryzen™ processors and future AMD Ryzen™ processors with BIOS update- Supports DDR4 Memory, up to 4400(OC) MHz- Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2- 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- Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost- Audio Boost: Reward your ears with studio grade sound quality- Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire™- Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface.LIGHTNING GEN 4 PCI-EMSI lightning Gen 4 PCI-E is the latest and the fastest PCI-E data transfer solution with 64GB/s of unidirectional transfer bandwidth that has doubled compared to its previous generation. PCIe 4.0 maintains both backward and forward compatibility with older and newer specifications. Optimized by steel armor design and server grade PCB, you can enjoy next-gen devices without any compromise.LIGHTNING GEN 4 M.2Utilizing 3rd Gen Ryzen processors, MSI B550 motherboards feature latest Lightning Gen 4 M.2 which is the fastest onboard storage solution on the market with up to 64 Gb/s transfer speed.A HUGE STEP OF DDR PERFORMANCEMSI OC LAB does not merely work hard on extreme overclocking. Compared to B450 motherboard memory A-XMP profile, MSI does have great improvement on performance and efficiency for B550 motherboards. Easy to enable A-XMP profile with auto power settings to get the best memory speed and stability.