SanDisk 100MBs Micro SDXC Memory Card - 64GB

This can happen if the SD card isn’t fully inserted, is incompatible with your device, or is formatted incorrectly. Try reinserting the card, checking your device’s supported SD card type (SD, SDHC, SDXC), and testing the card in another device.

You can format an SD card using your camera, computer, or mobile device. Formatting will erase all data, so be sure to back up your files first. For best compatibility, we recommend formatting the card in the device where it will be used.

Performance depends on the card’s speed class and your device’s capabilities. If you’re recording video or transferring large files, make sure you’re using a card with an appropriate speed rating.

The number inside a circle on your SD card represents the cards minimum sustained write speed (in MB/s) for example: 

• Class 10: Guarantees a minimum of 10 MB/s, suitable for HD video recording.

A number inside a "U" symbol indicates the UHS (Ultra High Speed) class: 

U1: Minimum write speed of 10 MB/s, similar to Class 10, for Full HD video. 

U3: Minimum write speed of 30 MB/s, essential for 4K video recording. 

Video speed class enables higher video resolution and recording features, such as multiple video streams, 360-degree capture, 4k resolution videos and VR content. There are five ratings for the Video Speed Class: 

• V6 (Video Speed Class 6): minimum write speed of 6MB/s 
• V10 (Video Speed Class 10): minimum write speed of 10MB/s 
• V30 (Video Speed Class 30): minimum write speed of 30MB/s 
• V60 (Video Speed Class 60): minimum write speed of 60MB/s 
• V90 (Video Speed Class 90): minimum write speed of 90MB/s 

The bus interface affects the card’s maximum data transfer speed: 

• Non-UHS cards have a maximum speed of 25 MB/s. 
• UHS-I cards can reach up to 104 MB/s. 
• UHS-II cards, these cards have a second row of pins and support speeds up to 312 MB/s, ideal for high-performance tasks like 4K or 8K video recording.