There are 3 standardised SD enjoying cards, from best to smallest: SD, MiniSD, and Micro SD. So, confident, in case you laptop can help between the above, and your Nintendo DSi has the comparable sized slot, they could the two help it. besides the undeniable fact that, Micro and Mini SDs are comparable in length, so be particular the slots are precisely equivalent in length, or you will get a card that may not artwork in one or the different. in case you do have distinctive slots, examine a working laptop or laptop shop or an cyber web shop for a USB SD adapter.