I bought my N3DS a couple of months ago and noticed the SD card is placed under the cover which is pretty anoyying and I thought what if I could put a small SD card reader in the N3DS and create a port to connect it to my computer, so instead of having to unscrew my back cover and get the SD card out everytime I wanna transfer a CIA file or other files, I can just flick a switch to unmount my SD card and plug it into my PC, now I know some of you may think whats the point of this if I can just get my SD card out and plug it into an adapter well everytime you unscrew your back cover I've noticed the little tiny screws are a pain to not lose and you can overtime wear down your SD card port on the 3DS, also I mentioned a switch this is so the SD card doesnt get fried from both the SD card readers current and 3DS current , the switch will just unmount the SD card from the 3DS.