A Little Fits a Lot With sleek colors to choose from and up to 2TB of capacity for a growing digital library, this portable HDD is compatible with USB 3.0 and both Windows and Mac computers. Portable external hard drive for file backup. Compatible with USB 3.0/2.0. Works with Windows and Mac without needing to reformat. Offers customized backup and file mirroring. Powered by USB connection. 2 Year Limited Warranty Small enough for a loaded laptop bag, spacious enough for loads of content- Backup Plus Slim is the perfect marriage of easy portability and truly useful file storage. Easily plug into Windows and Mac computers via USB 3.0 and enjoy helpful tools like customizable backup and folder mirroring.