This is a SATA adapter from M.2 Socket. This module allows you connect any SATA device to M.2 slot through a standard SATA port. SATA interface supports standard SATA 7pin data signals. This is perfect if you don't have an available SATA socket but you do have a M.2 NGFF socket to spare. If this is the case, you use the M.2 slot to give you an additional SATA port.