2 in1 SD card reader supports SD, SDHC, SDXC, MMC, micro SD, micro SDHC, micro SDXC. Do not support "memory stick pro duo" Universal card readers, compatible models include but are not limited to those listed below. QUESTION & ANSWER Q: What formats of SD/MicroSD card does this product support? A: It supports to read FAT32/exFAT/NTFS, but iPhone/iPad dissupport reading NTFS format. Hard drive is NTFS mostly. Q: Why is there an interruption when transfer very large files? A: This situation may be related to the fomart of SD/Micro SD card. FAT32: FAT32 format only supports transfer single file with a capacity of less than 2GB. exFAT: exFAT format supports transfer single file with a capacity of greater than 4GB.
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