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R4 DS Functionality:

>2nd generation storage device(no booting tool required)
>Flush fitting slot 1card
>Uses MicroSD card, Fat 16 or 32
>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
>Suports the wifi game, DS Rumble Pak, DS Browser
>Supports changes of the background of Operation Interface
>Supports 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

The box includes:
R4
Micro SD card reader
CD (electronic user manual)