You'll need a microSD for the New 3DS XL - NintendoToday
How to Remove the MicroSD Card from the New 3DS XL | Tips | Prima Games
Nintendo 3DS SD Board Replacement - iFixit Repair Guide
3DS XL Shell Swapping - Nintendo 3DS Wiki Guide - IGN
DSi XL | Watch Us Play Games
Upgrade Storage for the New Nintendo 3DS XL 2015 - iFixit Repair Guide
How to Remove the MicroSD Card from the New 3DS XL | Tips | Prima Games
SD Memory Card Slot Reader Repair Part for Nintendo 3DS N3DS 3DS XL/LL : Amazon.co.uk: Electronics & Photo
How to transfer 3DS SD card data and use high capacity (bigger than 32GB) microSD cards on the New Nintendo 3DS XL
How to Remove the MicroSD Card from the New 3DS XL | Tips | Prima Games
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Nintendo Support: How to Insert an SD Card or microSD Card