1. Introduction
The Lexar JumpDrive M400 USB 3.2 Gen 1 Flash Drive is designed for efficient data storage and transfer. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device, ensuring optimal performance and data security.

Image 1.1: The Lexar JumpDrive M400 connected to a laptop, demonstrating its compact design and readiness for use.
2. Key Features
- High-Speed Data Transfer: Experience USB 3.2 Gen 1 performance with read speeds of up to 150MB/s, reducing transfer times for large files.
- Durable Metal Design: Constructed with a stylish and robust metal casing, providing enhanced durability for daily use.
- Data Security: Features Lexar DataShield password protection with 256-bit AES encryption to secure your essential files against unauthorized access, corruption, or loss.
- Broad Compatibility: Fully compatible with PC and Mac systems, and backwards compatible with USB 3.1, USB 3.0, and USB 2.0 devices.
- Portable Design: Includes a key ring design for easy attachment to keys, backpacks, or bags, facilitating convenient portability.

Image 2.1: Visual representation of the speed advantage of USB 3.2 Gen 1 (up to 150MB/s) over USB 2.0, highlighting faster data transfer.

Image 2.2: The flash drive's robust metal construction, designed for durability and resilience in various environments.
3. Setup
The Lexar JumpDrive M400 is a plug-and-play device, requiring no special drivers for basic functionality on most operating systems.
3.1 Connecting the Drive
- Locate an available USB Type-A port on your computer (PC or Mac).
- Carefully insert the Lexar JumpDrive M400 into the USB port. Ensure it is fully seated.
- Your operating system should automatically detect the drive and display it as a removable storage device.

Image 3.1: The flash drive is compatible with both PC and Mac operating systems, allowing for versatile use across different computer platforms.
4. Operating Instructions
4.1 Transferring Files
Once the drive is connected and recognized by your computer, you can transfer files using standard operating system functions:
- Drag and Drop: Click and drag files or folders from your computer's storage to the Lexar JumpDrive M400 icon or its opened folder.
- Copy and Paste: Right-click on files or folders, select "Copy," then navigate to the Lexar JumpDrive M400, right-click in the desired location, and select "Paste."
4.2 Lexar DataShield (Password Protection)
The Lexar JumpDrive M400 includes Lexar DataShield software for password protection and 256-bit AES encryption. This feature helps protect sensitive data.
- Access the pre-loaded Lexar DataShield software on the drive.
- Follow the on-screen instructions to set up a secure vault and password.
- Store your confidential files within this encrypted vault.
Refer to the Lexar DataShield software's internal help documentation for detailed instructions on its use and features.

Image 4.1: The Lexar DataShield feature provides secure password protection and 256-bit AES encryption for your files.
4.3 Safely Removing the Drive
Always safely eject the flash drive before physically removing it from your computer to prevent data corruption:
- Windows: Click the "Safely Remove Hardware and Eject Media" icon in the system tray, then select the Lexar JumpDrive M400.
- macOS: Drag the drive icon from your desktop to the Trash, or right-click the drive icon and select "Eject."
5. Maintenance
Proper care ensures the longevity and reliability of your Lexar JumpDrive M400:
- Physical Protection: Avoid dropping the drive or exposing it to extreme temperatures, moisture, or strong magnetic fields.
- Cleaning: Use a soft, dry cloth to clean the exterior of the drive. Do not use liquid cleaners or solvents.
- Software Updates: Periodically check the Lexar website for any firmware or software updates for the DataShield application.
6. Troubleshooting
If you encounter issues with your Lexar JumpDrive M400, refer to the following common solutions:
- Drive Not Recognized:
- Try plugging the drive into a different USB port on your computer.
- Test the drive on another computer to determine if the issue is with the drive or the original computer.
- Ensure your operating system is up to date.
- Slow Transfer Speeds:
- Ensure you are using a USB 3.2 Gen 1 (or USB 3.0/3.1) compatible port on your computer for optimal performance. USB 2.0 ports will result in slower speeds.
- Avoid transferring many small files simultaneously; compressing them into a single archive can sometimes improve speed.
- DataShield Issues:
- If you forget your password, there is typically no recovery method for encrypted data. Ensure you keep your password secure.
- If the software is not launching, try reinstalling it from the Lexar website or the drive itself.
7. Specifications
| Specification | Detail |
|---|---|
| Model Name | M400 |
| Item Model Number | LJDM400256G-BNBNU |
| Memory Storage Capacity | 256 GB |
| Hardware Interface | USB 3.2 Gen 1 |
| Read Speed | Up to 150 Megabytes Per Second |
| Connectivity Technology | USB |
| Hardware Connectivity Technology | USB Type A |
| Color | Black |
| Item Weight | 0.16 ounces |
| Package Dimensions | 4.96 x 3.43 x 0.31 inches |
| Manufacturer | Lexar International |
| Date First Available | November 27, 2023 |

Image 7.1: Lexar products undergo extensive testing in Lexar Quality Labs to ensure performance, quality, compatibility, and reliability.
8. Official Product Video
Video 8.1: An official video from Lexar International showcasing the features and usage of the Lexar JumpDrive M400 USB 3.2 Flash Drive, including its speed, durability, and compatibility.
9. Warranty and Support
Lexar products are manufactured to high standards. For warranty information, technical support, or service inquiries, please visit the official Lexar website or contact Lexar customer support directly. Keep your proof of purchase for warranty claims.
Online resources and contact information can typically be found at www.lexar.com.





