Seagate Expansion Portable External Hard Drive - 5TB / 2.5 Inch / USB 3.0 / For Mac and Windows / STKM5000400 / STKM5000400

The Seagate Expansion Portable Drive holds 5TB, which covers thousands of photos, videos, games and documents without filling up your computer. It connects over USB 3.0 for quick transfers and works instantly with both Mac and Windows, so you plug it in and drag files across with no software setup. The lightweight 2.5-inch design is built for everyday carrying rather than sitting on a desk permanently.

Adding storage is a plug-and-play step: connect the drive and it appears ready for drag-and-drop file management. There is no installer to run and no account to create before you can save anything. It works across Windows, Mac and Chromebook devices, which matters in a household where the machines do not all run the same operating system.

The Expansion range is aimed at saving large media files such as videos and images, where a working folder outgrows internal storage quickly. Quick setup and plug-and-play connectivity mean the drive slots into an existing workflow instead of forcing a new one. For anyone shooting photos or video regularly, this is where the growing library lives.

USB 3.0 handles the transfer speed, which is what you notice when moving high-resolution photos or large video files rather than single documents. Faster transfers mean less waiting between finishing a shoot and having it copied across. Delay is minimal enough that the drive does not interrupt an editing workflow mid-session.

The drive is compatible with Windows, macOS and ChromeOS and is ready to use out of the box with no additional software. Its USB 3.0 interface also supports USB 2.0, so older desktops and laptops still connect even if they cannot reach full speed. That backwards compatibility is what keeps the drive useful across a mixed set of machines.

The casing is a sturdy, sleek construction built to handle the everyday bumps and knocks a portable drive collects in a bag. That matters more than raw specification for a device that moves between home, office and site. It is designed to keep working reliably while travelling or in a busy working environment.

This version is listed as STKM5000400, the 5TB capacity in the Seagate Expansion Portable line. Five terabytes on a 2.5-inch drive means a full media library, a games collection and a document archive can sit on one portable unit. Keeping that material on an external drive also keeps it off the computer's internal storage, where space is usually tighter.