The SSD industry moving towards other connector standards, such as M.2 and the newer U.2 (SFF-8639). The U.2 is designed for drives in more bandwidth in a common form-factor and it has the same pin-count as M.2, and the same bandwidth up to PCI-Express 4x speed.
ASUS already put this connector on its flagship Maximus VIII Extreme motherboard, but MSI want to go deferent way, rather than implant the connector in a high end motherboard, they released a new accessory that converts M.2 slots into a U.2 port. Which is extremely versatile, because today every motherboard has a M.2 connector and if user need U.2 connectivity than they just have to buy this new MSI Turbo U.2 Host Card. MSI’s upcoming high-end motherboards may in clued this as an accessory. If you have a PCI-Express M.2 on your board than this MSI Turbo U.2 Host Card will be perfected to run one of the first U.2 drive like Intel SSD 750 in its 2.5-inch variant.