The only way to do this is to replace the system board with the one shipped in this model that has the SATA connector.   That would be this board: [URL] There is no way to add the connector to the eMMC board you have.  
I have the Inspiron  3452 with 32GB eMMC but I want to add an SSD in the empty HD slot. Problem: There is no way to connect the HD cable. Some videos show existing HD with area on board to connect HD cable. In that space there is nothing on my board. Do I have to bring it to a place to add the HD plug to the board?  Please help me understand because you can't do anything with a 32 GB Laptop.  Thanks
I have a Inspiron 3452 with only 32GB eMMC but I want to add physical HD