R4 DS Revolution is the most popular flash card for the Nintendo DS. It is the first flash card to work in SLOT-1 without the need for a passthru or similar device to unlock the full potential of your DS and DS Lite cartridge. The R4 build quality is excellent and has a very low fault rate.
Please note:
R4 DS DOES NOT work with MicroSD Cards over 2GB
R4 firmware is no longer updated and therefore some newer games and applications may not work without patching
R4 DS Revolution is the original and still highly regarded as the best Generation 2 Slot-1 flash cart for the Nintendo DS and Nintendo DS Lite. With it's very intuitive interface and easy to use software included the R4 is quite a robust and straight forward device.
The R4 is an amazing little device with a form factor like original DS cart, it is a complete solution with no need to purchase any additional components or deal with any messy software and truly the easiest media enhancer you have ever done; To simply put it, this is a must have peripheral for any regular DS/DS lite owner.
-2nd generation storage device (no booting tool required)
-Flush fitting slot 1 card
-Uses MicroSD card, FAT16 or 32 (MAX 2 GB)
-Supports any MicroSD card speed with no lag in game
-Supports Clean ROM, drag and drop. Works on any OS
-Built in NoPass
-Automatically detect save type
-Save directly to MicroSD card, not to onboard chip
-Supports Moonshell and other homebrew. Open I/O interface
-User friendly skinnable interface. Touchscreen or button operation
-Supports rumble pak and memory pak
-Supports the WiFi game, DS Rumble Pak, DS Browser
-Supports changes of the background of Operation Interface
- Support Skin DIY by setting background and font colors on Main Menu and Game Menu manually and automatically
-Supports 4-scale-lightness adjustment ( DS Lite only )
-Supports the Soft Reset.
-Supports Action Replay cheat
-moonshell 1.6 support Software Reset function( Press START key back to the R4 menu)
-DLDI auto-patching
-Full download play support | 
