The Dell Inspiron 3157 2-in-1 Laptop Comes in 2 Different Drive Options from Dell and Supports Single Drive Configuration Only. (One 2.5" Hard Drive) or (One eMMC Solid State Flash Drive) Note: Models that came with a eMMC Flash Drive, the Flash Drive is installed in the 2.5" Drive bay using a adapter board. If Installing a 2.5" Drive in replace of the eMMC Flash Drive, you will need to remove the caddy and cable from adapter board and Install it on the 2.5" Drive.