The X299 GAMING PRO CARBON AC is a mid-high end motherboard found within the HEDT platform. MSI has kitted this board out with features which should satisfy both gamers and enthusiasts. For storage needs this board utilises U.2, M.2 and SATA 3 6GB/s. In the USB department USB 3.1 features heavily on the back panel and we even get a new USB 3.1 header for the front panel connectivity.