2.5 inches Ultra Slim Portable External Hard Drive USB3.0 HDD Storage Mobile Hard Disk Compatible for PC, Mac, Desktop, Laptop Features: Plug and Play. Without software to install, just plug it in and go, the portable hard drive is ready to use immediately. Simply attach the USB cable to your computer and you're ready to start sending files. Delivers handy portable storage. Easy to take wherever you go. USB 3.0-powered portable add-on storage, compatible with USB 2.0. Provides ample storage space for your music, movies and other files. Internal shock sensor and ramp loading technology protects your drive and data. Support system: 98SE,Windows 2000, Linux, Vista, WIN7,WIN8,win10,MAC Specifications: Hard Drive Type:2.5" HDD USB Interface:USB3.0 3 Years Warranty Package includes: 1*USB 3.0 External Hard Drives 1*USB 3.0 cable About Capacity: Hard disk vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated But the operating system is using binary arithmetic: 1MB = 1024KB, 1GB = 1024MB. So there are some differences between display capacity and nominal capacity of hard disk products. However, this is allowed to exist. Please do not doubt his authenticity. About capacity: 160GB=148GB 250GB=232GB 320GB=298GB 500GB=465GB