R4ultra and R4iultra are made by www.r4ultra.com. They are also called R4 ultra, R4u or R4u SDHC. R4ultra is a SLOT-1 flash card designed for Nintendo DS, DS Lite handheld consoles (R4iultra for DSi). It is a upgrade version of R4 DS.R4ultra and R4iultra not only contains all functions of R4 DS, but alse have other more function. It support SDHC memory card up to 32GB, it enable multi-media play and homebrews. Same as R4i SDHC and R4i Gold, R4i ultra card support Nintendo DSi V1.4.1. It really a good flashcard with low price.