Features: 1.Plug and play, easy to use with no software to install, just plug it in to use the portable hard drive and use the USB cable immediately. 2.Quickly add more storage capacity to your PC and other compatible devices. 3.Portable pocket size, comfortably placed in the palm of your hand, which can carry a large number of documents, photos, music and videos. 4.USB 3.0 Ultra?fast data transfers, providing fast transfer rate for many compatible devices. 5.Internal crash sensor and ramp charging technology protect equipment and data description. specification:Item Type: Mobile Hard Disk Material: ABS Interface: USB3.0 PackageList:1 x HardDisk1 x USB Cable1 x manual NoteThe displayed capacity is different from the nominal capacity because the calculation method is different Manufacturer standard: 1GB = 1000MB / 1MB = 1000KB Regarding usable capacity: Please note the memorandum regarding storage product capacity: 4GB = Approx. 3.4GB?3.8GB 8GB=Approx. 7.4GB?7.6GB 16GB=Approx. 14.5GB?15.5GB 32GB=Approx. 28GB?30GB 64GB=Approx. 58GB?60GB 128GB=Approx. 119GB?124GB 256GB=Approx. 249GB?250GB 512GB=Approx. 498GB?500GB