Introduction
The SanDisk Ultra USB 3.0 Flash Drive is designed for fast data transfer and reliable storage. With its high-speed USB 3.0 interface, you can quickly move large files, including photos, videos, and documents, between devices. Its compact and durable design makes it an ideal portable storage solution for everyday use.
Key Features
- Super-fast Transfer Speeds: Achieve speeds of up to 100MB/sec, significantly faster than standard USB 2.0 drives.
- USB 3.0 Enabled: Backward compatible with USB 2.0 ports, ensuring broad compatibility with various devices.
- Secure Access Software: Includes SanDisk Secure Access software for password protection of your private files, adding an extra layer of security.
- Durable and Portable Design: Features a retractable connector to protect the USB port and a compact form factor for easy carrying.
Product Overview

Figure 1: Front view of the SanDisk Ultra USB 3.0 Flash Drive.

Figure 2: The compact SanDisk Ultra USB 3.0 Flash Drive held in hand, demonstrating its portability.

Figure 3: The flash drive positioned next to a laptop, highlighting its small size relative to a computer.

Figure 4: Front of the retail packaging, showing key features and capacity.

Figure 5: Back of the retail packaging, detailing system compatibility and legal information.
Setup
- Unpack the Drive: Carefully remove the SanDisk Ultra USB 3.0 Flash Drive from its packaging.
- Extend the Connector: Slide the button on the drive to extend the USB connector.
- Connect to a USB Port: Insert the flash drive into an available USB port on your computer or compatible device. For optimal performance, use a USB 3.0 port (typically identified by a blue interior). The drive is also compatible with USB 2.0 ports, though transfer speeds will be slower.
- Automatic Recognition: Your operating system should automatically detect and install the necessary drivers for the flash drive. A new drive letter will appear in "My Computer" (Windows) or on the Desktop/Finder (macOS).
Operating Instructions
Transferring Files
To transfer files to or from your SanDisk Ultra USB 3.0 Flash Drive:
- Copy and Paste: Locate the files you wish to transfer. Right-click on the file(s) and select "Copy." Navigate to the flash drive's folder, right-click in an empty space, and select "Paste."
- Drag and Drop: Open the folder containing the files you wish to transfer and open the flash drive's folder in a separate window. Click and drag the file(s) from the source folder to the flash drive's folder.
Using SanDisk Secure Access Software
The SanDisk Secure Access software allows you to create a password-protected folder (vault) on your flash drive to keep sensitive files private. The software is typically pre-loaded on the drive or can be downloaded from the SanDisk website. Follow the on-screen instructions to set up your vault and password.
Maintenance
- Safe Removal: Always safely eject the flash drive from your computer before physically removing it. On Windows, click the "Safely Remove Hardware" icon in the system tray. On macOS, drag the drive icon to the Trash or click the Eject button next to the drive name in Finder.
- Keep Clean: Keep the USB connector free from dust and debris. Use a soft, dry cloth to clean the exterior if necessary.
- Avoid Extreme Conditions: Do not expose the drive to extreme temperatures, moisture, or strong magnetic fields.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Drive not recognized by computer. |
|
| Slow transfer speeds. |
|
| Cannot access password-protected files. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | SDCZ48-128G-U46 |
| Memory Storage Capacity | 128 GB |
| Hardware Interface | USB 3.0 |
| Read Speed | Up to 130 MB/s |
| Write Speed | Up to 60 MB/s |
| Connectivity Technology | USB |
| Product Dimensions (LxWxH) | 0.42"D x 0.87"W x 0.31"H |
| Item Weight | 0.48 ounces |
| Compatible Devices | Standard USB-A ports |
| Special Feature | Password Protection (via Secure Access software) |
Warranty and Support
Your SanDisk Ultra USB 3.0 Flash Drive comes with a standard warranty. For detailed warranty information and terms, please refer to the documentation included with your product or visit the official SanDisk support website. The product also includes a one-year subscription offer for RescuePRO Deluxe file recovery software, which can help restore accidentally deleted files.
Additional protection plans are available for purchase, offering extended coverage for photo and data recovery. Please check with your retailer for details on these optional plans.
For further assistance, technical support, or to download the latest software, please visit the SanDisk Support Website.







