R4 Ultra and R4i Ultra
R4i Ultra for DSi and R4 Ultra for Nintendo DS, DS Lite
is a SLOT-1 flash card designed for Nintendo DS, DS Lite handheld consoles (R4i Ultra for DSi). Compare R4
flash card, it can use SDHC storage card, And have even better compatibility than R4 with NDS ROMs and homebrews, Kernel base on Acekard, so its a very good card but lower price.
Useful Link: R4 Ultra and R4i Ultra Guide
,R4 Ultra and R4i Ultra Kernel