Manufacturer's product description:

- 2nd generation storage device (no booting tool required)

- Flush fitting slot 1 card - Uses MicroSD card, FAT16 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 - 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 R4i menu)