well sum'bitch!It will work fine with 64GB SD cards that are formatted for it. UConnect doesn't seem to actually care about the card size, but it doesn't recognize other formats. The issue is that most cards over 32GB are formatted NTFS rather than FAT32. And Windows doesn't want to format anything larger than 32GB in FAT32 format. There are programs you can get from the web to do it, though. So you can buy any 64GB card and just reformat it if you want. There's a decent writeup here.