Ladies and gentlemen... 3DS Capture Cards still exist. For purchase AND installation. : r/3DS
USB-C connector on N3DS XL? Idea for hardmod/capture card installation | GBAtemp.net - The Independent Video Game Community
Merki.net on Twitter: "I'm just selling my last (old) 3DS Capture Card made by Loopy. It is new and unused. I kept it for warranty reasons if I have to replace one
3DS Capture Install Guide
Just bought a 3DS XL, I guess the previous owner did not know it had a capture card as it was only £97! : r/3DS
Nintendo 3DS Capture Board
Top 3 Methods to Record 3DS Gameplay (with/without Capture Card)