The MSI B450M-A PRO MAX II is a Micro-ATX/ATX form-factor motherboard based on the AMD B450 chipset with an AM4 socket, designed for desktop builds. It supports a wide range of AMD Ryzen processors including Ryzen 5000, 4000 G-Series, 3000, 2000 and 1000 series, plus Athlon processors with Radeon Vega graphics. The board offers multiple expansion options (including two PCIe x16 slots and two PCIe x1 slots) and four DDR4 DIMM slots (supporting high frequency memory up to 4133 MHz OC and large total capacities reported in specs). Key features include Turbo M.2 (PCIe Gen3 x4) for NVMe SSD performance, Audio Boost for improved audio quality, a 2.5G LAN port for faster network connectivity, X-Boost software to optimize storage/USB device performance, and Core Boost with a fully digital power design to better support multi-core CPUs. Warranty: 3 years (manufacturer) covering manufacturing defects; physical damage not covered; carry-in service. In the box: 1 motherboard. Color: Black. Model ID: B450M-A PRO MAX II DDR4.