AceKard 2 AK2 for Nintendo DS and NDS Lite (Blank Nintendo DS Cartridge)
The AceKard 2 is the newest Nintendo DS storage device by AceKard. Unlike the AceKard R.P.G, the AceKard 2 supports SDHC microSD with no memory limit! You can get a 32gb microSD if you want to drop that kind of cash -- Most of the time, a 2gb microSD will do the job as it'll hold around 50 games.
It seems to get harder and harder to find these Nintendo DS storage devices. Amazon has stopped selling R4DS, DSTT and other DS storage devices. But I guess every now and them one of their vendors is able to slip in a storage device like this AceKard 2.
If you'd like to get a device that'll do the same thing (plus more) then the R4DS or DSTT, then this device is what you should get.
Here are some features of the Acekard 2.
AceKard 2 video review: