The R4 DS Card is the most popular Nintendo DS card on the market today. It has been available for quite some time now and it is still one of the favourites available today. The R4 DS Card does all our would want to be able to play music and watch videos on our DS. The limitations with this card are that it does not accept memory cards with capacities bigger than 2GB as this device is not SDHC compatible. However 2GB is more than enough space for most people. The other limitation is that this r4 ds card is NOT compatible with the latest Nintendo DSi game console.