Nintendo Support: How to Insert an SD Card or microSD Card
Remove the Write Protection on a Micro SD. - Instructables
How to fix write protection on Nintendo 3DS. Simple and easy! - YouTube
Nintendo Support: How to Lock or Unlock an SD Card
6 Ways on How to Format Write Protected SD Card - EaseUS
Amazon.com: 16GB SD SDHC Flash Memory Card FOR NINTENDO 3DS N3DS DS DSI & Wii Media Kit. Also compatible with Nikon SLR Coolpix Digital Camera, Kodak Easyshare, Canon Powershot, Canon EOS :
Help with SD card slot | GBAtemp.net - The Independent Video Game Community
Forensic Analysis of the Nintendo 3DS NAND - ScienceDirect
5 Methods on How to Remove Write Protection from SD Cards