Introduction
Thank you for choosing the KEXIN 128GB Micro SD Card 3 Pack. These high-speed memory cards are designed to provide reliable and ample storage for your digital devices. This manual will guide you through the proper setup, operation, and maintenance to ensure optimal performance and longevity of your Micro SD cards.

This image displays three KEXIN 128GB Micro SD cards, highlighting their compact size and design.
Setup
1. Inserting the Micro SD Card
The KEXIN Micro SD card is compatible with various devices. Locate the Micro SD card slot on your device (e.g., smartphone, tablet, action camera, drone, dash cam). Gently insert the card into the slot until it clicks into place. Ensure the card is oriented correctly to avoid damage.

The KEXIN Micro SD card is compatible with a wide range of devices, including action cameras, dash cameras, drones, smartphones, and tablets, providing versatile storage solutions.
2. Using the SD Adapter
For devices that require a standard SD card, insert the Micro SD card into the provided SD adapter. Ensure the Micro SD card is fully seated within the adapter. The adapter can then be inserted into the SD card slot of your device (e.g., digital camera, laptop card reader).

The Micro SD card can be inserted into the included SD adapter for use with devices that require a standard SD card slot, such as digital cameras, enabling Full HD video recording.
3. Formatting the Card
Upon first use, or if you encounter issues, it is recommended to format the Micro SD card using your device's settings. Formatting erases all data on the card and prepares it for use with that specific device. Refer to your device's manual for specific formatting instructions.
This video demonstrates the process of inserting a KEXIN Micro SD card into a digital camera and a laptop using the provided adapter, and how to format the card for use. It also shows how to access files on a computer.
Operating Instructions
1. Recording and Storing Data
Once the Micro SD card is properly inserted and formatted, your device will automatically recognize it as storage. You can now use your device to capture photos, record videos, and store various files directly onto the card. The Class 10 and UHS-I speed ratings ensure smooth recording of Full HD video and rapid capture of photos.

The KEXIN Micro SD card supports Full HD video recording, making it suitable for devices like dash cameras.
2. Data Transfer
To transfer files to or from the Micro SD card, you can use the SD adapter with a computer's SD card reader, or connect your device directly to a computer. The card's high-speed performance facilitates quick transfer of large files.

This graphic illustrates the efficient transfer of various data types, such as documents, videos, images, and music, from the Micro SD card to a laptop.
Maintenance
1. Durability Features
KEXIN Micro SD cards are built to withstand challenging conditions. They are:
- Waterproof: Protects against accidental spills and submersion.
- Dust-proof: Resists dust and dirt particles.
- Shock-proof: Designed to endure impacts and drops.
- Temperature-proof: Operates reliably in extreme temperatures.
- X-ray-proof: Safe from airport X-ray scanners.

The KEXIN Micro SD card is designed for durability, featuring resistance to water, dust, shock, extreme temperatures, magnetic fields, and X-rays, ensuring data safety in various environments.
2. Safe Handling
To maintain optimal performance and prevent data loss, always handle your Micro SD cards with care. Avoid bending, scratching, or exposing the metal contacts to dirt. Always safely eject the card from your device or computer before removing it physically.
Troubleshooting
Card Not Detected
- Ensure the card is fully and correctly inserted into the device or adapter.
- Try inserting the card into a different compatible device or card reader to rule out a device-specific issue.
- If using an SD adapter, ensure the lock switch on the adapter is in the 'unlocked' position.
- Attempt to reformat the card (note: this will erase all data).
Slow Performance
- Verify that your device supports the card's speed class (UHS-I, Class 10).
- Ensure the card is not nearly full, as this can impact performance.
- Transfer large files in batches rather than all at once.
Data Loss
- Regularly back up important data to another storage device or cloud service.
- Always safely eject the card before physical removal.
Specifications
| Feature | Detail |
|---|---|
| Brand | KEXIN |
| Model Name | 128GB Micro SD Card 3 Pack |
| Item Model Number | TF-U1-GN-128Gx3-KX |
| Memory Storage Capacity | 128 GB |
| Flash Memory Type | SDXC |
| Hardware Interface | microSDXC |
| Secure Digital Association Speed Class | Class 10, UHS-I, U1 |
| Read Speed | Up to 80 MB/s |
| Write Speed | Up to 20 MB/s |
| Special Features | Drop Proof, Dust Proof, Temperature Proof, Wearout Proof, X-Ray Proof |
| Product Dimensions | 0.59 x 0.43 x 0.03 inches |
| Item Weight | 0.048 ounces (1.35 Grams) |
| Compatible Devices | Camera, Gaming Console, Printer, Smartphone, Tablet |
Warranty Information
The KEXIN 128GB Micro SD Card 3 Pack comes with a Limited Warranty. For specific details regarding warranty coverage, terms, and conditions, please refer to the warranty documentation included with your purchase or contact KEXIN customer support.
Customer Support
Should you encounter any issues or have questions regarding your KEXIN Micro SD cards that are not addressed in this manual, please refer to the KEXIN brand store on Amazon or contact the seller directly for assistance. Provide your product model number (TF-U1-GN-128Gx3-KX) and a detailed description of your inquiry for efficient support.