Due to their small size, the number is etched in tiny text on the back side. You may need a magnifying glass or a smartphone camera zoomed in to read it. On USB Flash Drives

Open a secure browser window and go to the official Lexar Support website.

Software tools write data to every single sector of the drive and read it back to verify the true capacity. If a card is fake, these tools will flag exactly where the storage space cuts off.

: CFexpress cards feature a durable casing. The serial number is usually printed clearly on the back or side edge. On USB Flash Drives

After scratching off the coating, you will find a QR code or a security code.

Always check the serial number immediately after purchase, especially if buying from third-party sellers on Amazon or eBay. It is the fastest way to ensure you didn't buy a "fake capacity" drive that will corrupt your data.

: High-quality, consistent printing and intact seals are hallmarks of genuine Lexar products.

While Lexar does not feature an automated self-service warranty lookup bar like some PC manufacturers, they cross-reference your serial number manually during the return process. To check coverage or file a Return Merchandise Authorization (RMA) claim, follow these steps:

Visit the Lexar Support Portal to ensure your product is authentic and covered by warranty.

If your serial number is valid, you'll typically see one of the following results:

: If you still have the original retail box, look at the back. The serial number is typically located next to the barcode, labeled as S/N or Serial No. 2. Official Lexar Serial Number Check Links

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