Lexar 256GB SDXC UHS-II Memory Card - Professional 2000x

The read speed is up to 300MB/s.

The write speed is up to 260MB/s.

Yes, it is backwards compatible with UHS-I devices.

This card is designed for Full-HD and cinema-quality 8K video.

Yes, it is shockproof, temperature-proof, vibration-proof, and X-ray proof.

You can format the card in your camera or by using a computer. Always back up your data before formatting.

V90 is a Video Speed Class that indicates the card can sustain a minimum write speed of 90MB/s, suitable for high-resolution video recording.

Ensure the card is properly inserted and that the device is turned on. Try inserting the card into another compatible device to check if the card is functioning. Check the device's compatibility with SDXC cards.

Make sure your device supports UHS-II. If the device only supports UHS-I, the card will operate at UHS-I speeds. Also, ensure there is sufficient battery power in your device.

Avoid removing the card during read/write operations. Always safely eject the card. If the problem persists, try formatting the card using your device or a computer.

This is normal during intensive use. However, if the card becomes excessively hot, stop using it and allow it to cool down. Ensure proper ventilation around the device.