Seagate Expansion 4TB Portable External Hard Drive

Some people need extra storage for a few files. Others need enough room for an entire media library, years of backups, or a full project archive. If you fall into the second group, the Seagate Expansion 4TB Portable External Hard Drive is built for that scale.

With 4TB of capacity, there’s space for tens of thousands of photos, long video projects, or a complete backup of multiple devices. It’s the kind of headroom that means you won’t be deleting old files just to make room for new ones.

Performance keeps pace with the storage. A USB 3.0 interface handles fast transfers, and the drive still connects to USB 2.0 ports when that’s all you have available, just at a slower rate.

Setup takes almost no effort. The drive comes preformatted in exFAT, so it works with both Windows and Mac systems right out of the box. There’s no software to install and no drivers to hunt down before you start using it.

Power comes directly through the USB cable, which means no separate adapter to manage. Despite the large capacity, the drive keeps a compact, portable build that fits easily on a desk or inside a bag.

Looking for a smaller size instead? Browse our Hard Drive category for other capacity options, or pair this drive with one of the laptops we carry. General specifications are also listed on the A4Tech product page.