WORM (Write-Once-Read-Many) Micro SD by Nexus Industrial Memory is a hardware and firmware-level secure storage solution that provides unalterable data storage capabilities. Once data is written to the card, it cannot be erased, modified, deleted, renamed, or formatted, ensuring data integrity and protection. The device functions as a replacement for legacy CD-R/DVD-R disk storages, optical disks, zip disks, and WORM tapes, implemented in a Micro SD form factor. The card can be used with a Multifunctional Card Holder with USB 3.1 and USB Type C interfaces for data access, making it particularly suited for medical records and sensitive data while maintaining accessibility.