Perfect for on-the-go, the Seagate Expansion Portable Hard Drive will instantly add more storage to your PC or Mac, allowing you to take large files with you. Setting up this portable storage device is simple, with connection through a single USB cable and no need for an external power supply. Windows and Mac operating systems will automatically recognise the drive, so there's no need to install any software. The USB 3.0 port allows for fast data transfer. Simply drag and drop your files, and you're all set!