Well I have always used the M3 Real and have had no problems until my daughter now got a DSi and when I put the card in it just says no DS card installed. Even with the memory card in it does nothing. Now with the DS Reals you could check the card without the memory card and it would tell you that no memory card is installed. Am I missing something here? The double kicker is I ordered another DS Real for my son as his card was needing to be shimmed to work and it doesn't work either. Now of course all the TTDS I ordered did? Do I have to set this card up somehow first?