The R4 SDHC Cartridge is the current top-of-the-line in DS SLOT-1 flash carts. It is just an amazing little device like original DS cart size, 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 -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