Flexxon’s WORM card is based on SD 6.1 specification. It supports capacity from 4GB up to 128GB and 4GB up to 256GB for microSD and SD respectively. It comes with FAT32 file system by default for all the capacities. To use the WORM card, files are to be written in one-by-one sequentially. It supports advance technology of NAND Flash with auto-read refreshment, read disturb management, adaptive wear levelling, power loss protection, and a SMART feature for health monitoring. It is available in Gold-grade and Diamond-grade, each specified in the industrial temperature range.