The Acer Chromebook C710 comes in 2 Different Drive Options from Acer and Supports Single Drive Configuration Only. (One 2.5" Solid State Drive or Hard Drive) or (One Mini-SATA Solid State Drive in a Adapter Bracket) Note: When the Mini-SATA Solid State Drive is Installed, the Mini-SATA Solid State Drive occupies the 2.5" Drive bay using a adapter bracket/plate. If replacing the Mini-SATA Solid State Drive for a 2.5" Drive, you will need the 2.5" Drive caddy and cable for installation.