In physical aspect the R4 card is the similar in size as a usual Nintendo DS cartridge. The r4 card has a slot for micro SD card located at the back of the device. Into the Micro-SD card goes firmware, games, applications, MP3s etc. that can be allowed in your r4 card.

You will then prompt to a menu on your R4 card upon booting up your Nintendo DS R4. This menu will permit you to choose from Games or Multimedia. The top of the R4 Card had a small slot to push a Micro SD card inside. This made use of a spring mechanism so that a Micro SD card would lock into place when pushed. With the beginning of the newest flash cartridge, the R4 DS owners will not be restricted to only playing games with their handheld gaming console, but will be able to do much more.

One of the latest features offered on the second generation cartridge would be the functions to play music and videos, view pictures and open e-books. The r4 card is not actually the chief storage system and will do something as an adapter for the micro SD cards with capabilities as much as 32 GBs. Given that it works on the micro SD card, the R4 packages generally feature a USB micro SD card writer and reader to allow users to quickly transfer files to and from the micro SD card using a laptop or personal computer.

Given that adding and extracting files is easy with the micro SD card and the adapter, users can merely download any games they would like to play. Considering the extra capacity supplied by bigger micro SD cards, users can also put over ten games on just one flash cartridge, which is perhaps one of the best features of this new cartridge. It features an incorporated a no access function which takes away the prerequisite for a boot cart. When you set up the firmware for the card, it's simple to drag files to the card. Virtually anyone can do this without any problems when they are using the flash cartridge, because it comes with easy to follow instructions for setup, which is incorporated in the package.