1. Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your LaCie Rugged SSD Pro5 4TB external solid-state drive. Please read these instructions carefully to ensure optimal performance and longevity of your device.
The LaCie Rugged SSD Pro5 is designed for professionals requiring high-speed, durable storage. It features Thunderbolt 5 connectivity for rapid data transfer and a robust design for protection against environmental factors.

Image 1.1: Front view of the LaCie Rugged SSD Pro5 4TB.
2. What's in the Box
Verify that all items are present in the packaging:
- LaCie Rugged SSD Pro5 4TB External SSD
- Thunderbolt 5 compatible cable

Image 2.1: LaCie Rugged SSD Pro5 and its accompanying Thunderbolt cable.
3. Setup
- Connect the SSD: Use the provided Thunderbolt 5 cable to connect the LaCie Rugged SSD Pro5 to a compatible port on your computer. Ensure the connection is secure.
- Power On: The SSD is bus-powered and does not require an external power adapter. It will power on automatically when connected to a powered Thunderbolt port.
- Initial Recognition: Your operating system should detect the new drive. For Windows users, the drive may appear as a new volume in 'This PC' or 'Disk Management'. For macOS users, it will appear on the desktop or in 'Finder'.
- Formatting (Optional but Recommended): The drive comes pre-formatted in exFAT for cross-platform compatibility. For optimal performance and specific operating system features (e.g., Time Machine on macOS), it is recommended to format the drive to a native file system such as APFS for macOS or NTFS for Windows. This can be done using Disk Utility on macOS or Disk Management on Windows. Note: Formatting will erase all data on the drive. Back up any important data before proceeding.

Image 3.1: LaCie Rugged SSD Pro5 connected to a laptop.
4. Operating the Device
4.1 Data Transfer
The LaCie Rugged SSD Pro5 utilizes Thunderbolt 5 technology, offering read/write speeds up to 6700/5300MB/s. To achieve these speeds, ensure your computer has a Thunderbolt 5 or Thunderbolt 4 port and that you are using the provided cable. Data transfer is performed by dragging and dropping files to and from the drive, or by using your operating system's copy/paste functions.

Image 4.1: Thunderbolt 5/4 compatibility for high-speed data transfer.
4.2 Rugged Features
The device is engineered for durability:
- IP68 Rating: Provides resistance to dust and water ingress.
- Drop Resistance: Can withstand drops from up to 3 meters (9.8 feet).
- Crush Resistance: Designed to endure pressure from a 2-ton vehicle.
While robust, avoid intentional exposure to extreme conditions or impacts beyond specified limits.

Image 4.2: The LaCie Rugged SSD Pro5 demonstrating its durable, water-resistant design.
5. Maintenance
5.1 Safe Ejection
Always safely eject the LaCie Rugged SSD Pro5 from your computer before disconnecting the cable. This prevents data corruption and ensures the drive's integrity.
- macOS: Drag the drive icon to the Trash, or right-click the drive icon and select 'Eject'.
- Windows: Click the 'Safely Remove Hardware and Eject Media' icon in the system tray and select the drive.
5.2 Physical Care
To maintain the device's condition, wipe it with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials. Store the drive in a cool, dry environment away from direct sunlight and extreme temperatures.
5.3 Data Management
Regularly back up critical data stored on the SSD to another storage device. While the LaCie Rugged SSD Pro5 is durable, no storage solution is infallible. LaCie offers Rescue Data Recovery Services as part of its warranty to assist with data loss scenarios.

Image 5.1: Illustration of data recovery services.
6. Troubleshooting
6.1 Drive Not Detected
- Check Connections: Ensure the Thunderbolt cable is securely connected to both the SSD and your computer's Thunderbolt port.
- Try Another Port/Cable: Test with a different Thunderbolt port on your computer or a different compatible cable if available.
- Restart Computer: A system restart can sometimes resolve detection issues.
- Disk Management/Disk Utility: Check if the drive appears in your operating system's disk management tool (Disk Utility for macOS, Disk Management for Windows). If it appears but is uninitialized or unformatted, you may need to format it.
6.2 Slow Transfer Speeds
- Verify Port Type: Ensure you are connected to a Thunderbolt 5 or Thunderbolt 4 port. USB-C ports without Thunderbolt support will result in lower speeds.
- Cable Quality: Use the provided Thunderbolt cable or a certified Thunderbolt 5/4 cable. Generic USB-C cables may not support full Thunderbolt speeds.
- File System: As mentioned in Setup, using a native file system (APFS for macOS, NTFS for Windows) can improve performance compared to exFAT.
- System Load: High CPU usage or other disk-intensive tasks on your computer can affect transfer speeds.
6.3 Drive Heating During Use
It is normal for the SSD to become warm during extended periods of high-speed data transfer. This is due to the high performance of the internal components. Ensure adequate airflow around the device and avoid covering it during operation.
6.4 Windows Compatibility
While designed for cross-platform use, some users have reported challenges with optimal performance or detection on Windows systems without specific driver installations or formatting adjustments. Ensure your Windows system drivers are up to date and consider formatting the drive to NTFS for dedicated Windows use, as detailed in the Setup section.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | STNA4000400 |
| Digital Storage Capacity | 4 TB |
| Connectivity Technology | Thunderbolt 5 |
| Read Speed (Max) | Up to 6700 MB/s |
| Write Speed (Max) | Up to 5300 MB/s |
| Hard Disk Form Factor | 2.5 Inches |
| Hard Disk Description | Solid State Drive |
| Compatible Devices | Desktop, Laptop |
| Installation Type | External Hard Drive |
| Item Weight | 4 ounces (approx. 113 grams) |
| Product Dimensions (LxWxH) | 5.71 x 1.5 x 3.54 inches (approx. 14.5 x 3.8 x 9 cm) |
| Color | Blue |
| Special Feature | Data Recovery Service |
8. Warranty and Support
8.1 Limited Warranty
The LaCie Rugged SSD Pro5 4TB comes with a 5-year limited warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
8.2 Data Recovery Services
Included with your purchase is access to LaCie's Rescue Data Recovery Services for the duration of the warranty period. This service can assist in recovering data in the event of accidental data loss, mechanical failure, or natural disaster. For more details and to initiate a recovery request, visit the official LaCie support website.
8.3 Technical Support
For technical assistance, driver downloads, or further information, please visit the official LaCie support website. You can find FAQs, troubleshooting guides, and contact information for customer support.





