1. Introduction
The Seagate Expansion desktop drive provides substantial external storage for your digital content, including photos, movies, and music. This device is designed for ease of use, allowing for simple drag-and-drop file transfers. It is compatible with both Windows and Mac operating systems, requiring no additional software for initial setup. For use with Apple Time Machine, reformatting is necessary.
What's in the Box
- Seagate Expansion Desktop External Drive 22TB USB 3.0
- 18-inch USB 3.0 Cable
- 18W Power Adapter
- Quick Start Guide (this manual)

Image 1.1: Front view of the Seagate Expansion 22TB External Hard Drive.
2. Setup
System Requirements
- Windows operating system (Windows 7 or higher)
- macOS operating system (macOS 10.12 or higher)
- Available USB 3.0 or USB 2.0 port
Connecting the Drive
- Connect the power adapter to the drive and then plug it into a power outlet.
- Connect the USB 3.0 cable to the drive's USB port.
- Connect the other end of the USB 3.0 cable to an available USB port on your computer.
The drive will automatically be recognized by your computer. For Windows, it will appear as a new drive letter. For macOS, it will appear on your desktop or in Finder.

Image 2.1: Back view of the Seagate Expansion drive, highlighting the power and USB 3.0 ports.

Image 2.2: The Seagate Expansion drive integrated into a typical desktop computer setup.
3. Operating Instructions
Using with Windows
Once connected, the drive is ready for use. You can transfer files by dragging and dropping them into the drive's folder in File Explorer. The drive is pre-formatted for Windows (NTFS file system).
Using with macOS
For macOS, the drive will be recognized automatically. To use it with Apple Time Machine for backups, you will need to reformat the drive to a macOS-compatible file system (e.g., HFS+ or APFS). This process will erase all data on the drive, so ensure any important data is backed up before proceeding.
Data Transfer
The Seagate Expansion drive utilizes USB 3.0 for fast data transfers. For optimal performance, connect the drive to a USB 3.0 port on your computer. It is also backward compatible with USB 2.0 ports, though transfer speeds will be limited to USB 2.0 rates.
4. Maintenance
- Keep the drive in a clean, dry environment, away from direct sunlight and extreme temperatures.
- Avoid dropping or subjecting the drive to physical shocks.
- Ensure proper ventilation around the drive to prevent overheating.
- Always safely eject the drive from your computer's operating system before disconnecting the USB cable or power adapter to prevent data corruption.
5. Troubleshooting
Drive Not Detected
- Ensure the power adapter is securely connected to both the drive and a working power outlet.
- Verify the USB cable is firmly connected to both the drive and your computer.
- Try connecting the drive to a different USB port on your computer.
- Restart your computer.
Slow Transfer Speeds
- Ensure the drive is connected to a USB 3.0 port on your computer for optimal performance. USB 2.0 ports will result in slower speeds.
- Avoid running multiple demanding applications during large file transfers.
- Check your computer's resource usage; high CPU or disk usage can affect transfer speeds.
Drive Requires Reformatting for Mac
As mentioned in the Operating Instructions, the drive is pre-formatted for Windows. To use it fully with macOS, especially for Time Machine, you must reformat it using Disk Utility. This will erase all data.
6. Technical Specifications
| Feature | Specification |
|---|---|
| Model Number | STKP22000400 |
| Digital Storage Capacity | 22 TB |
| Hard Drive Type | Mechanical Hard Disk |
| Hard Drive Interface | USB 3.0 |
| Hard Drive Rotational Speed | 7200 RPM |
| Connectivity Technology | USB |
| Product Dimensions (LxWxH) | 1.65 x 7.04 x 4.92 inches |
| Item Weight | 2.64 pounds |
| Special Feature | Data Recovery Service |
7. Warranty and Support
Limited Warranty
Your Seagate Expansion External Hard Drive comes with a limited warranty. Please refer to the warranty card included with your product or visit the official Seagate website for detailed terms and conditions regarding warranty coverage and duration.
Rescue Data Recovery Services
This product includes Seagate's Rescue Data Recovery Services, providing peace of mind in the event of unexpected data loss. This service helps recover data from your drive in situations such as accidental deletion, virus attacks, or mechanical failure. Activation and terms for this service can typically be found on the Seagate website or through the product registration process.
Customer Support
For further assistance, technical support, or to access additional resources, please visit the official Seagate support website: www.seagate.com/support





