Lexar 128GB UHS-II SDXC 250MB/s 1667x - 1667x

UHS-II (Ultra High Speed II) is a newer standard that offers significantly faster transfer speeds compared to UHS-I, due to an extra row of pins. UHS-II cards can reach read speeds up to 250MB/s, while UHS-I cards typically top out around 104MB/s.

Yes, to achieve the maximum advertised speeds of 250MB/s, you need a UHS-II compatible SD card reader. If you use a UHS-I reader, the card will work, but at slower UHS-I speeds.

Yes, this card is backwards compatible. It will work in older cameras and devices that only support UHS-I or standard SD card speeds, but it will perform at the maximum speed supported by that device (e.g., Class 10 or UHS-I speeds).

The '1667x' rating refers to the card's potential read speed, indicating it can transfer data at up to 1667 times the basic SD transfer speed (1667 x 0.15MB/s = approximately 250MB/s).

Yes, with its UHS Speed Class 3 (U3) and Video Speed Class 60 (V60) ratings, this card is well-suited for recording 4K video, ensuring stable performance.

Always safely eject the card from your computer before removing it. Regularly back up your important files from the card to another storage medium. Format the card periodically in the device it is used with to maintain optimal performance.

Lexar typically offers a limited lifetime warranty on their professional memory cards. Please refer to Lexar's official website for the most current warranty information specific to this model.

Ensure the card is fully inserted. Try formatting the card in the device (note: this will erase all data). Check if your device supports SDXC cards and UHS-II if you are trying to achieve maximum speeds. Clean the gold contacts gently with a soft, dry cloth.

Verify that you are using a UHS-II compatible card reader and that your computer's USB port supports the reader's speed. Ensure the device itself (camera, camcorder) supports UHS-II for optimal performance. Check for firmware updates for your camera or card reader.

Stop using the card immediately to prevent further data loss. Back up any recoverable data. Format the card in the device it will be used with. If issues persist, the card may be failing and should be replaced.

Try formatting the card on a different computer or using a different card reader. If using a camera, ensure it is powered by AC adapter or fully charged battery during formatting. If it still fails, the card might be defective.