Introduction
This manual provides essential instructions for the proper use and maintenance of your SanDisk Ultra USB 3.0 32GB Flash Drives. These drives offer high-speed data transfer and reliable storage for various digital files. Please read this manual thoroughly before using the product.
Safety Information
- Do not expose the flash drive to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping the device or subjecting it to strong impacts.
- Keep the device away from water and other liquids.
- Do not attempt to disassemble or modify the flash drive. This will void the warranty.
- Ensure proper ejection of the drive from your computer to prevent data loss or corruption.
Package Contents
Verify that your package contains the following items:
- 10 x SanDisk Ultra USB 3.0 32GB Flash Drives
- 5 x Lanyards
Product Overview
The SanDisk Ultra USB 3.0 Flash Drive features a compact design with a retractable connector. The blue interior of the USB connector signifies its USB 3.0 capability.

Image: SanDisk Ultra USB 3.0 32GB Flash Drive with its USB connector extended, ready for use. The blue internal tab indicates USB 3.0 compatibility.
The included lanyards can be attached to the loop on the flash drive for convenient carrying and to help prevent loss.

Image: A blue lanyard designed for attaching to small electronic devices like flash drives, providing a secure carrying option.
Setup
Connecting to a Computer
- Locate an available USB port on your computer. For optimal performance, use a USB 3.0 port (often identified by a blue interior).
- Extend the USB connector from the flash drive.
- Insert the flash drive firmly into the USB port.
- Your operating system should automatically detect the drive and install necessary drivers. A notification may appear indicating the drive is ready for use.
Operating the Flash Drive
Transferring Files
- Once the flash drive is recognized, open 'File Explorer' (Windows) or 'Finder' (macOS).
- Locate the SanDisk Ultra drive, typically listed under 'This PC' or 'Devices and locations'.
- To copy files to the flash drive: Drag and drop files or folders from your computer to the flash drive's window. Alternatively, right-click the files, select 'Copy', then navigate to the flash drive, right-click, and select 'Paste'.
- To copy files from the flash drive: Drag and drop files or folders from the flash drive's window to a location on your computer.
Understanding USB 3.0 Performance
The SanDisk Ultra USB 3.0 drive is designed for high-speed data transfer, up to 100MB/s read speed. To achieve these speeds, ensure your computer has a USB 3.0 compatible port. When connected to a USB 2.0 port, the drive will function but at USB 2.0 speeds.
Safe Removal
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 SanDisk Ultra drive. Wait for the 'Safe to Remove Hardware' message before unplugging.
- macOS: Drag the flash drive icon from the desktop or Finder sidebar to the Trash icon, or right-click the drive icon and select 'Eject'.
Using Lanyards
Attach a lanyard to the loop on the flash drive for easy carrying on a keychain, backpack, or around your neck. This helps to keep the drive accessible and reduces the risk of misplacement.
Maintenance
- Cleaning: Use a soft, dry, lint-free cloth to gently wipe the exterior of the flash drive. Do not use liquid cleaners or solvents.
- Storage: When not in use, retract the USB connector to protect it from dust and damage. Store the drives in a cool, dry place.
- Data Backup: Regularly back up important data stored on the flash drive to another storage device or cloud service to prevent permanent data loss in case of device malfunction or loss.
Troubleshooting
Drive Not Recognized
- Ensure the drive is fully inserted into the USB port.
- Try a different USB port on your computer.
- Test the drive on another computer to rule out a computer-specific issue.
- Restart your computer.
- Check 'Disk Management' (Windows) or 'Disk Utility' (macOS) to see if the drive is detected but not assigned a drive letter or mounted.
Slow Transfer Speeds
- Ensure you are using a USB 3.0 port on your computer. USB 2.0 ports will limit speeds.
- Transferring many small files can be slower than transferring a few large files.
- Close other applications that might be using system resources.
- Ensure your computer's drivers are up to date.
Data Corruption
- Always use the 'Safely Remove Hardware' function before unplugging the drive.
- Avoid disconnecting the drive during a file transfer.
- If data appears corrupted, you may attempt to use disk repair utilities provided by your operating system (e.g., 'Check Disk' on Windows, 'First Aid' on macOS). Note that this may not recover all data.
Specifications
| Feature | Detail |
|---|---|
| Brand | SanDisk |
| Model Name | SDCZ48 |
| Memory Storage Capacity | 32 GB |
| Connectivity Technology | USB |
| Hardware Interface | USB |
| Hardware Connectivity Technology | USB Type A |
| Read Speed | Up to 100 Megabytes Per Second |
| Color | Black |
| Item Weight | 7.4 ounces (for the 10-pack) |
| Product Dimensions | 6.4 x 4.2 x 2.4 inches (packaging) |
| Special Feature | Lightweight |
Warranty Information
SanDisk products are manufactured to the highest standards and undergo rigorous testing. For detailed warranty information, including terms, conditions, and duration, please refer to the official SanDisk website or the warranty card included with your purchase. Keep your proof of purchase for warranty claims.
Support
If you encounter any issues or have questions not covered in this manual, please visit the official SanDisk support website for FAQs, troubleshooting guides, and contact options.
- SanDisk Support Website: www.westerndigital.com/support/sandisk (Please note: SanDisk is a Western Digital brand)





