The Dell Vostro 3468 Laptop Supports Single and Dual Drive Configurations. (One 2.5" Solid State Drive or Hard Drive in the Internal Primary Bay and One 2.5" Solid State Drive or Hard Drive in the Removable Air-Bay) Note: The second 2.5" Drive is optional and is located in the optical drive bay when installed. If replacing the optical drive for the second 2.5" Drive, you will need the Dell Removable Air-Bay Carrier for installation.