Made of aluminum alloy and plastic, the hard disk case is durable.With the simple structure, it is easy to install.It supports external USB2.0 interface.It has large compatibility that is suitable for Windows98/ME/2000/XP, for Mac OS 9.0 or higher version.Item Name: Hard Disk CaseMaterial: Aluminum Alloy, PlasticPlug Type: EU Plug, US Plug (Optional)Input Interface: USB 2.0 to USB Type-BSupported Capacity: 3TMaximum Transmission Speed: 480MbpsCompatible Systems: for Windows98/ME/2000/XP, for Mac OS 9.0 or Higher VersionWorking Temperature: -40 - 70 Degree CelsiusStorage Temperature: -50 - 80 Degree CelsiusRelative Humidity: 5% - 95%Features: Large Compatibility, Durable, Computer AccessorySize: 255mm x 164mm x 52mm/10.04" x 6.46" x 2.05" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes: (Hard Disk Not Included)1 x Hard Disk Case1 x USB Cable1 x Power Adapter1 x Screw