Original DS cart sized device; - DragN drop files NO software required; - Play in SLOT-1 without Passcard or Flashme; - Supports TF (MicroSD) capacity upto 4GB (32Gbit); - Supports DS sleep mode; - Supports FAT16 / 32 File System; - Supports Screen touch sensitive; - Compatible clean ROM, homebrew & moonshell; - Compatible all versions of DS; - Intuitively upgradeable custom operating system. How to Use: 1) Hardware installation - Insert TF / Micro SD card into USB2.0 Micro SD card reader / writer, format your TF / Micro SD card as FAT format by Use the Computer; - When appears a removable disk added, hardware has been installed; - TF card (MicroSD) is used to save the games and data, once your micro SD card is Formatted correctly, you will see "Free Space =*" in the right hand pane. Then You can begin copying ROMs over. 2) Place the LOADER: - Copy loader. NDS and TFSYSTEM folder to TF card root dir. - Directly DragN drop the ds ROM (Clean ROM Need) into the TF card root dir. - Copy the model. Sav from TFSYSTEM folder to TF card root dir. 3) Unload TF card - After finishing ROM added, then right click the removable disk icon on the right Down corner of the screen, draw out the TF card from card reader / writer. 4) Insert TF / SD card into the R4 - Insert the TF card with ROM into R4, then insert R4DS into the Slot-1 while NDS / NDSL is power off. It will enter the new system of R4DS when users start it next Time. - When NDS / NDSL is power on, the R4DS is booted, a small loading screen will appear And then you'll be taken to the main GUI within seconds. You can select ROMs To run by the navigation keys or touch screen, press "A" button to enter the corresponding Functions.