Vantec HDA-252P Drive Bay Adapter Internal - 2 x Total Bay - 2 x 2.5 Bay"Number of Total Expansion Bays: 2Number of 5.25 Bays: NoNumber of 3.5" Bays: NoNumber of 2.5" Bays: 2Number of 2.5"/3.5" Bays: NoNumber of 1.8" Bays: NoDrive Interface: Serial ATAMaterial: PlasticForm Factor: InternalCompatible Drive Bay Width: 3.5"Height: 1"Width: 4"Depth: 4.8""