1PCS R4I-SDHC 3DS RTS Upgrade Revolution Per DSi Per 3DSLL/N3DS/NDSi XL/NDSi/NDSL/NDS - AliExpress
R4 SDHC Adapter Pro Card R4I SDHC scheda di masterizzazione per videogiochi 3DS DSI XL/LL DSL DS e RTS schede di memoria di vita Flashcard Game Com Card - AliExpress
Recensione e Guida R4 SDHC Dual Core (Dual-Core) per Nintendo DS, Nintendo DS lite, Nintendo DSi e Nintendo 3DS
R4 R4i SDHC Revolution for NDSi/NDSL/NDS R4i Cards R4 Cards
Found these old R4 flash cards, black one says "R4i V1.4.1" and white one says "NEW R4 SDHC". Which one is better for a system of the 3DS family and how can