Lexar SDXC UHS-II 128GB V90 Memory Card - Professional

The read speed is up to 300MB/s.

The write speed is up to 260MB/s.

You can record Full HD, 3D, and even 4K video.

Yes, it is backward compatible with UHS-I devices and also works with older, non-UHS-I devices at Class 10 speeds.

V90 indicates a Video Speed Class, ensuring a minimum sustained write speed suitable for recording high-quality video.

Ensure the card is properly inserted and compatible with the device. Try the card in a different device to determine if the issue is with the card or the original device.

Yes, it's designed to be temperature-proof, shockproof, vibration-proof, and X-ray-proof.

Eject the card from your device before physically removing it.

Ensure the card is properly inserted into the SD card slot. Try inserting it into another device to determine if the card or the original device is faulty. If the device is old, it might not support the card's capacity or the SDXC format. Consider formatting the card in your device.

Verify that your device supports UHS-II. If not, the card will operate at UHS-I speeds. Ensure that the card reader and the computer's ports support UHS-II for faster transfers.

Safely eject the card from the device before removing it. Back up your data regularly. Consider using data recovery software if files are lost or corrupted.