Dell Startech.Com 2.5-Inch To 3.5-Inch Sata Hard Drive Mounting Bracket Kit (575-Bbwy) - Device Type: Storage bay adapter, Supported Form Factor: 3.5" to 2.5", Connectivity: Bays: 2 x internal - 2.5-inch, Compatible Bay: 1 x internal 3.5-inch, Dimensions (WxDxH): 4 in x 4.6 in x 0.9 in, Weight: 5.29 oz, Colour: Steel