Expansion Portable Hard Drive The Seagate Expansion portable hard drive is the perfect external drive for quick and easy storage expansion. Featuring a sleek, compact design, this portable hard drive offers up to 5TB of additional space, making it ideal for storing large files, photos, videos, and more. It's ready to use right out of the box with no software to install. Simply drag and drop your files. Compatible with both Windows and Mac, it seamlessly integrates with your devices. Plus, USB 3.0 ensures fast data transfer speeds, so you can back up your digital life effortlessly. Whether you're at home or on the go, the Seagate Expansion portable hard drive provides reliable, on-the-fly storage and the Seagate quality you trust.