Is this flashcard good for DSL? Im planning to buy one for cheap cause i have only Layton game. https://www.ebay .com/itm/R4-Video-Game-Memory-Card-Download-3DS-Game-Flashcard-For-NDS-MD-Adapter-U0J5-/393478979470?mkcid=16&mkevt=1&_trksid=p2349624 ...