1. Introduction and Overview
The SanDisk High Endurance Video microSDXC Card is engineered for durability and continuous recording, making it ideal for demanding applications such as dash cams and home monitoring systems. With capacities up to 256GB, it allows for extensive recording of Full HD or 4K videos without interruption. This card is built to withstand harsh conditions, ensuring reliable performance day after day.

2. Key Features
- High Endurance: Designed for continuous recording, offering up to 20,000 hours of worry-free operation.
- 4K UHD and Full HD Recording: Supports high-resolution video capture for clear and detailed footage.
- Extreme Durability: Temperature-proof, water-proof, shock-proof, humidity-proof, and magnet-proof for reliable performance in diverse environments.
- Ample Storage: Available in capacities up to 256GB to save more videos.
- Versatile Compatibility: Ideal for dash cams, home monitoring systems, and compatible with Nintendo-Switch.
3. Setup
To set up your SanDisk High Endurance microSDXC card, follow these general steps:
- Insert the Card: Carefully insert the microSDXC card into the designated slot on your compatible device (e.g., dash cam, home security camera, Nintendo-Switch).
- Use the Adapter (if needed): If your device requires a standard SD card slot, insert the microSDXC card into the included SD adapter before inserting it into the device.
- Format the Card: For optimal performance and to ensure compatibility, it is highly recommended to format the card using your device's internal formatting function. Refer to your device's user manual for specific instructions on how to format an SD card.

Official product overview video demonstrating the SanDisk High Endurance microSDXC card.
4. Operating
Once installed and formatted, the SanDisk High Endurance Video microSDXC Card will seamlessly integrate with your dash cam or home monitoring system for continuous recording. The card is designed to handle the constant read/write cycles required by these devices, ensuring that critical moments are captured without interruption.
For dash cams, the card will record footage as you drive, often overwriting the oldest files when the card is full. Many dash cams also feature a G-sensor that automatically locks footage in the event of an impact, preventing it from being overwritten. For home monitoring systems, the card will record based on the camera's settings, such as motion detection or continuous recording.
5. Performance
The SanDisk High Endurance Video microSDXC Card offers reliable performance for video recording:
- Read Speed: Up to 100 MB/s, allowing for quick transfer of footage to your computer.
- Write Speed: Up to 40 MB/s, ensuring smooth and consistent recording of high-resolution video.
- Video Speed Class: Rated V30, U3, and Class 10, indicating it is capable of recording 4K UHD and Full HD video with sustained write speeds of at least 30 MB/s.
6. Durability
This card is built for and tested in harsh conditions to ensure maximum reliability:
- Temperature Proof: Operates in extreme temperatures, from freezing cold to scorching heat.
- Water Proof: Designed to withstand accidental water exposure.
- Shock Proof: Resists damage from drops and impacts.
- Humidity Proof: Maintains performance in humid environments.
- Magnet Proof: Protected against magnetic interference.

7. Maintenance
To maintain the optimal performance and longevity of your SanDisk High Endurance microSDXC card, it is recommended to periodically format the card. This helps to clear fragmented data and ensures the card remains in good working order for continuous recording. Always back up any important footage before formatting.
8. Troubleshooting
If you encounter issues with your SanDisk High Endurance microSDXC card, consider the following:
- Compatibility: Ensure your device is compatible with microSDXC cards and supports the required speed classes (U3, V30, Class 10) for your desired recording quality (Full HD or 4K UHD).
- Formatting Issues: If the card is not recognized or recording properly, try formatting it using your device's internal formatting function. If issues persist, try formatting it on a computer using a reliable card reader.
- Slow Performance: Verify that your device's settings are appropriate for the card's speed capabilities. Using higher resolution or frame rate settings than the card can handle may result in dropped frames or recording errors.
- Card Not Detected: Remove and reinsert the card. Clean the card's contacts gently with a soft, dry cloth. Test the card in another compatible device to rule out a device-specific issue.
9. Specifications
| Specification | Value |
|---|---|
| Brand | SanDisk |
| Model Name | SDSQQNR-256G HIGH Endurance Micro SDXC Class 10 UHS-I U3 V30 |
| Flash Memory Type | Micro SDXC |
| Memory Storage Capacity | 256 GB |
| Compatible Devices | Smartphone, Dash Cam, Home Monitoring Systems |
| Read Speed | 100 Megabytes Per Second |
| Special Feature | X Ray Proof, Water Proof, Drop Proof, Temperature Proof |
| Item Weight | 0.16 ounces (4.54 Grams) |
| Product Dimensions | 0.04"L x 0.59"W x 0.43"H |
| Secure Digital Association Speed Class | Class 10, U3, V30 |
| UPC | 619659173227 |
10. Warranty and Support
The SanDisk High Endurance Video microSDXC Card comes with a manufacturer's warranty. For detailed information regarding warranty coverage, terms, and conditions, please refer to the product packaging or visit the official SanDisk website. For technical support or further assistance, please contact SanDisk customer service.