R4i SDHC series flashcard is made by r4i-sdhc.com. It is most popular in Nintendo world. R4i SDHC contains 3 kinds of flashcard: The R4i SDHC 3DS card (also called R4 3DS card), R4i SDHC V1.4.3 and R4 SDHC card. R4i-SDHC & R4-SDHC are SLOT-1 flash cards for NDS console series (R4i supports DSi). They are upgrade versions of R4 with multi-media features which can support SDHC and run most games and homebrews. They have widely been owned by many NDS player users.