Seagate Expansion · Portable Hard Drive
Seagate Expansion Portable Hard Drive
Authorized Reseller · Best Pricing · Expert Guidance
Expand your digital horizons with effortless external storage on the go — easy-to-use, high-capacity, plug-and-play.
Your device recognizes the drive automatically on connection
No power brick — the USB cable carries data and power
Lightweight enough to live in a laptop bag
Works on both macOS and Windows without file size limits
What is the Seagate Expansion Portable Hard Drive?
Expand your digital horizons with the Seagate Expansion Portable Hard Drive. Effortless external storage on the go.
It is Seagate’s easy-to-use, high-capacity plug-and-play portable hard drive: connect the drive to your computer using the included USB cable and your device should recognize it automatically. There is nothing to install and nothing to configure.
Because it is bus-powered there is no separate power adapter to carry — the USB cable supplies both data and power, which is what keeps it genuinely portable.
For optimal performance you may want to reformat the drive to match your operating system: exFAT for cross-platform use, NTFS for Windows or APFS for macOS.
When is a bus-powered portable drive the right choice?
Three reasons a bus-powered 2.5-inch drive beats a desktop unit when the storage needs to move.
Genuinely Portable
Lightweight, bus-powered and cable-free beyond the one connection to your laptop — no power brick to pack, no wall socket to find.
Plug-and-Play
Connect the drive using the included USB cable and your device should recognize it automatically. No drivers, no software install, no configuration.
Cost per Terabyte
External hard drives provide more storage at a lower cost than flash, which makes them the sensible choice for archiving large libraries and long-term storage.
How does the Expansion Portable Drive run without a power brick?
A sealed 2.5-inch enclosure with a single USB connection — the simplest possible external drive.
Other Seagate external drives alongside the Expansion Portable
Portable, desktop, professional and gaming external storage.
How do you set up a portable drive for regular backups?
How to build a backup routine that actually protects your data.
Expansion Portable Hard Drive: frequently asked questions
Setup, formatting and compatibility answers for the Expansion Portable line.
Seagate offers a diverse range of external hard drives to meet various needs. Portable drives are lightweight for on-the-go storage, while desktop drives provide larger capacities for extensive backups and media. Specialized gaming drives enhance storage and performance for Xbox® and PlayStation®. Seagate also offers themed special edition external hard drives with unique designs, versatile personal storage drives for everyday use and high-capacity professional storage drives for demanding tasks.
Connect your external hard drive. Go to Settings > System > Storage > Advanced storage settings > Backup options. Click Add a drive and select your external drive. Enable File History for automatic backups, or use Backup and Restore (Windows 7) for a full system image.
Open Settings > Update & Security > Backup. Click Add a drive and choose your external drive. Enable File History to back up files automatically, or use Backup and Restore (Windows 7) for a full system image.
Open System Preferences > Time Machine (System Settings > General > Time Machine on macOS Ventura and later). Click Select Backup Disk and choose your external drive, then turn on Time Machine for automatic backups. Time Machine will back up your files periodically in the background.
Yes. On Mac (macOS Catalina and later), connect your iPhone to your Mac, open Finder, select your device, choose Back up all data to this Mac, then manually move the backup to an external drive. On Windows or older Macs, use iTunes to back up then move the backup folder to an external drive. Third-party software can also perform direct backups.
Connect the drive to your computer. On Windows, open Disk Management, right-click the drive, select Format and choose exFAT. On Mac, open Disk Utility, select the drive, click Erase, choose exFAT then click Erase. Note: exFAT works on both macOS and Windows without file size limits.
On Windows, click the USB/Drive icon in the taskbar, select Eject [Drive Name], wait for the confirmation message then unplug safely. On Mac, open Finder and locate the drive under Devices, click the Eject icon next to the drive name, wait for it to disappear then unplug safely.
On Mac: open Finder and look under Locations in the sidebar; check your desktop if drive display is enabled; open Disk Utility to see if the drive is recognized but not mounted; and check that the cable and ports are working. On Windows: open File Explorer (Windows + E) and check under This PC for the drive under Devices and Drives, then right-click the Start menu and select Disk Management to see if the drive is recognized but not yet formatted or mounted.
Our specialists will help you match capacity, interface and form factor to how you actually work. BlueAlly (DiskDataWorks.com) is an authorized Seagate reseller — call 844-356-5142 or request a quote online.
Buy the Expansion Portable Drive from an authorized reseller
Our specialists will help you match the Expansion Portable line to how you actually work — capacity, interface and form factor — and quote authorized-reseller pricing.
Capacity sizing for your library and backup set
Mac, Windows and cross-platform formatting guidance
Interface check (USB-C, USB 3.x, Thunderbolt)
Authorized-reseller pricing with full warranty coverage
Talk to an Expert
with a BlueAlly Solution Architect