Seagate

Seagate STEA3000400 3TB Expansion Portable External Hard Drive

4.3 (1814 reviews)
USB 3.0USB 2.0

Expand Your Digital World with the Seagate Expansion 3TB Portable Hard Drive The Seagate Expansion 3TB Portable External Hard Drive provides ample storage for your growing digital library. With easy drag-and-drop file saving and USB 3.0 connectivity, this drive offers fast data transfer speeds an...

$199.99*
Check availability

*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Expand Your Digital World with the Seagate Expansion 3TB Portable Hard Drive

The Seagate Expansion 3TB Portable External Hard Drive provides ample storage for your growing digital library. With easy drag-and-drop file saving and USB 3.0 connectivity, this drive offers fast data transfer speeds and seamless integration with Windows. Its compact design makes it ideal for on-the-go storage needs.

Specifications:

  • Brand: Seagate
  • Model: STEA3000400
  • Storage Capacity: 3TB
  • Interface: USB 3.0 (Backwards compatible with USB 2.0)
  • Operating System Compatibility: Windows 7 or higher
  • Color: Black
  • Included: 18-inch USB 3.0 Cable, Quick Start Guide

Key Features

Easy and simple to use - Plug it in and go

Fast file transfers with super speed USB 3.0

Compatible with USB 3.0 and USB 2.0

Powered by USB port

Drag and drop file saving for Windows, right out of the box. Please note: Product needs to be reformatted if it is to be used with Mac. Reformatting the drive will erase all content unless it is backed up to another drive

The available storage capacity may vary.

Specifications

Capacity
3TB
Interface
USB 3.0
Form Factor
Portable External
Power Source
USB port
Operating System Compatibility
Windows (out of the box), Mac (requires reformat)
File Transfer Method
Drag and drop (Windows)

Pros & Cons

👍 Pros

  • Offers a substantial 3TB storage capacity, providing ample space for a large volume of files, documents, photos, and videos.
  • Features a simple plug-and-go setup, making it easy to use right out of the box without complex installation.
  • Facilitates fast file transfers with SuperSpeed USB 3.0 connectivity, significantly reducing wait times for large data moves.
  • Backward compatible with USB 2.0, ensuring it can be used with older systems while still providing faster speeds when connected to USB 3.0.
  • Powered directly by the USB port, eliminating the need for an external power adapter and reducing cable clutter.
  • Supports drag-and-drop file saving for Windows users, offering a familiar and intuitive way to manage data.

👎 Cons

  • Requires reformatting for use with Mac operating systems, which will erase all content if not backed up first.
  • The "available storage capacity may vary," indicating that the usable space could be slightly less than the advertised 3TB.
  • While USB 3.0 is fast, it's not the latest standard (USB 3.1 or 3.2), which might offer even higher theoretical speeds.
  • Being an external portable drive, it is more susceptible to physical damage from drops or impacts compared to internal drives.
  • Reliant on the USB port for power, meaning it draws power from the connected device, potentially impacting the battery life of laptops.

Frequently Asked Questions

The drive is compatible with Mac, but it needs to be reformatted first. Please note that reformatting will erase all content on the drive.
The Seagate Expansion Portable External Hard Drive features SuperSpeed USB 3.0 for fast file transfers. It is also compatible with USB 2.0.
No, this hard drive is powered directly by the USB port, eliminating the need for an external power adapter.
This model offers a generous 3TB of storage capacity for your files, photos, and videos.
For Windows users, file saving is straightforward with a simple drag-and-drop method right out of the box.