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Specification:

The CID register is 16 bytes long and contains the unique card identification number. It is programmed during the card manufacturing process andThe SD card host cannot be changed. The CID number is a compilation of information about the card, such as manufacturer, dateManufacturer, checksum total, GB size, etc. This is done by sending the command CMD26 PROGRAM_CID to program the cardIdentity register. This command can only be issued once. The card contains hardware to prevent this operation afterFirst time programming. Usually this command is reserved for manufacturers.

The card identification (CID) register is 128 bits wide. Contains card identification information used when swiping the cardidentification stage. Each flash card should have a unique identification number.

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1. About OEM products

You can send us the high-definition customized logo file (AI file), and then our designers will make product renderings for your confirmation. Finally we proceed to mass production.

2.About warranty

All products come with a 12-month warranty after sale. If you have any questions, we will reply within 24 hours.