R4 DS is a slot 1 DS flash kit discovered to play ROMs. I may be stating the obvious here, but the point is; that's what it's meant to do, and it does it very well. From our extensive testing, so far we can confirm that the R4 DS is 100% compatible and doesn't suffer any slow downs in game.
The outcome is interesting (As with all flash kits, the claim of 100% compatibility may change and IF an incompatible game is discovered). In the recent times R4 DS Card are famous for its reliable and stable performance among Slot-1 cards present for Nintendo DS in the market . And this is what makes it high selling adapter among its competitors. But one of the greatest challenge a customer faces is that purchasing best quality of Nintendo DS R4 card from the market. You can make the best usage of informations provided by the Nintendo R4 DS users forum which will help you in selecting correct R4 retail website to a great extent.
One should atleat have the knowledge to download correct R4 software. There are reports previously that many customers are complalining that they are not able to download the correct R4 firmware . It is very important to call R4 firmware for the right version of R4 DS card. Similar thing goes for when purchasing new product of Dsi R4 also called R4i or R4 Dsi.
Now, after having the correct R4 adapter and succesfully downloading the correct R4 software, one should now learn to how to use it with DS/ DS Lite/DSi. Before starting you should gain sufficient information because R4 is fully loaded with all its unique features. If you're looking for a flash kit with some exciting features and options to customise it in every possible way to your hearts content, then unfortunately the R4 DS will not satisfy you. R4DS doesn't provide any extras besides a main menu icon to boot a compatible version of Moonshell, and a PassMe feature. But, if you're looking for a slot 1 flash kit with unlimited storage capacity (depending on the contents of your wallet), 100% ROM compatibility, complete "drag 'n' drop" ease-of-use and don't plan on expecting much more from the cart, then I can definitely recommend the R4 DS as your solution. Retrieved from http://www.modchipstore.com.