Amazon.com: HEIYING Game Card Case for Nintendo 3DS 3DSXL 2DS 2DSXL DS DSi,Portable 3DS 2DS DS Game Cartridge Holder Storage with 24 Game Card Slots. : Video Games
Nintendo Support: How to Insert an SD Card or microSD Card
The N2DS XL has a different SD CARD Slot. : r/3dshacks
How to Transfer All Your Nintendo 3DS Data to a New 3DS | GameXcess.net - Gaming News, Videos and Editorials!
Amazon.com: TF SD Memory Card Slot Socket Reader Holder with Board for New 3DS XL New 3DS LL : Video Games
How to Remove the MicroSD Card from the New 3DS XL - Prima Games
Is spontaneous combustion of micro SD cards an issue with 3DS XL? : r/3DS