Just in case it's hard to see, it's a SanDisk Ultra 32GB SDHC Class 10. I don't know if the 30MB/s means speed or not. It only works when I first start my Nintendo 3DS XL and the Home menu appears. All the games stored on the card appear, but whenever I select a game, it acts as if the card was removed from the system and returns to the Home menu. None of the games appear on the Home menu after this, but will again if the system is restarted. I don't know if maybe this card is compatible, but I've heard that it needs to be SDHC and Class 10. Does anyone know what may be causing the trouble or is there another 32GB SD card you use on your Nintendo 3DS XL. I'm currently using a 16GB SD card, but I'm close to running out of storage space on it soon due to a lot of music mainly that I don't want to delete.