The R4 comes in a hard shell as that of a game cartridge but does more than what a game cartridge can do
. The R4 is a gaming aid which brings better entertainment through revolutionized technology.
The R4 basically has a slot on it for the microSD card to be inserted. The R4 gets its source data and use the microSD to store the additional information given to it. For example, if you save your game while playing with a R4 card inside the console, then the console saves the particular file on the microSD memory card which is in the R4 card and does not affect the internal memory of the Nintendo Dual Screen console.
The R4 supports any kind of a microSD memory card, regardless of its speed. And without any lag or pause there is continuous fun and entertainment without any disturbances whatsoever. The microSD memory card is inserted into the card slot in the R4 card which has a spring mechanism which makes sure that the microSD memory card is not placed improperly. It is so easy to insert and remove the memory card as and when you want to.
The files can be put into the microSD cards as easy as dragging and dropping the desired files into the memory card. There is no need of any software to use the memory card with any computer. There is no basic requirement for the PCs to be compatible to access the files. However there is a firmware CD that comes along with the package of the R4 box. The CD contains the firmware through which the R4 card works along with the Nintendo DS consoles.
You can play homebrew games using this device. Homebrew games are those games which are made to adapt to the emulator of yours.