MSI B550M PRO Motherboard AMD Ryzen AM4 DDR4 2x DIMM Slots (Max 64GB) 1x PCI-e 4.0 DP HDMI VGA 1x M.2 4x SATA 6x USB 3.2 Gen 1 6x USB 2.0 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 optimized professional workflows but also less troubleshooting and longevity. Core Boost With premium layout and fully digital power design to support more cores and provide better performance. Lightning Gen4 Solution The latest Gen4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed. M.2 Shield FROZR Strengthened built-in M.2 thermal solution. Keeps M.2 SSDs safe while preventing throttling, making them run faster. 2oz Thickened Copper PCB An enhanced PCB design improves heat dissipation and performance reliability. PCI-E Steel Armor Protecting VGA cards against bending and EMI EZ Debug LED Easiest way to troubleshoot. Audio Boost Reward your ears with studio grade sound quality for the most immersive audio experience. DDR4 Boost Advanced technology to deliver pure data sig