Treat R4 and R4i as storage devices that Nintendo has released and are popular. Also known as flash cards, these flash cards are used to store the work of authorized developers in the program Develop games and other downloaded games. This gadget will allow you to use the micro SD card in the Nintendo DS and Nintendo DSi console so you can easily store and manage games, apps, music and movies. There are even users and tech enthusiasts who use R4 to store their downloaded emailsbooks. In addition to R4 and its latest incarnation, R4i, there are many storage devices introduced, but this series is considered the most popular Flash Card for technicians. Maybe one of the reasons why it\'s popular is that there\'s no need to add components. Users like you only need to have regular peripherals. R4 represents manufacturers and developers, and represents the revolution of Nintendo DS. And completely changed the market. There was a time when DS only allowed players and users to play games on it. But with the launch of this flash card, users can find other uses for DS. Now users can record and play music on their devices, and you can also store and watch movies. This flash card is also the best on the back. Provide storage for the game so you don\'t have to worry about losing or deleting the game. This flash card is also known for its compact size. But don\'t let its size fool you on what it can do. In terms of capacity, the capacity of this flash card to carry and store exceeds that of the contemporaries. The memory of the flash card averaged from 2 GB to 32 GB. With this storage capacity, some people may think the price may be out of reach. This is not the case with this flash card. In order to use the flash card, how to use this flash card, it is important that the software should be installed and run on the device. The firmware can be used online and run before using the flash card. When purchased on the market, this will be provided with an SD or Secure Digital card that allows you to store files on the card. Once these things are available, you can plug the SD card into the flash card and insert the cartridge into the Nintendo DS. Another similar flash card used by the player is R4i. This is similar to R4, the same size as the Nintendo DSi, but the only difference is that there is an extra port where MicroSD can be installed. This allows the data to run on Nintendo DS. Both flash cards are the player\'s best friends, but you may not need these two. If you own DSi, then R4i is definitely the best fit for your needs. If you are looking for better technology, The R4i will accept the cake as this is the latest issue between the two.