Old 3ds Xl Sd Card Slot. The wii u itself has no sd card functionality. 3ds 2ds and 3ds xl use a normal sized sd card.
Thankfully buying a microsdhc card is the easy part. In fact the new 3ds xl will accept up to a 32gb microsdhc card which is the ideal size for digital download crusaders. These will work in the wii and photo channel but not wii u.
Buy a new 3ds sd card.
Thankfully buying a microsdhc card is the easy part. The wii u itself has no sd card functionality. Connect the old sd card to your pc. Buy a new 3ds sd card.
