Vantec HDA-250M Drive Bay Adapter Internal - 1 x Total Bay - 1 x 2.5 Bay"Number of Total Expansion Bays: 1Number of 5.25 Bays: NoNumber of 3.5" Bays: NoNumber of 2.5" Bays: 1Number of 2.5"/3.5" Bays: NoNumber of 1.8" Bays: NoDrive Interface: Serial ATAMaterial: MetalForm Factor: InternalCompatible Drive Bay Width: 3.5"Height: 0.6"Width: 4"Depth: 4.7"Weight (Approximate): 0.35 ozPackage Contents: 2.5" to 3.5" Mounting Kit Install Screws Quick Installation Guide Green Compliant: YesGreen Compliance Certificate/Authority: RoHSPackage Contents 2.5" to 3.5" Mounting Kit Install Screws Quick Installation Guide "