I have never tried type 2. I would stick with type 1. The SD2 and SD3 only support up to 2G using FAT16. Lately there have been problems getting some newer cards to work. The SD3 doesn't use ATA or IDE mode but rather a more direct memory mode that is part of the CF standard developed by SanDisk. The SD3 also uses 5V. CF cards are supposed to work with both 5V and 3.3V but sometimes I wonder if all cards cover every situation like they are supposed to.
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