Just want to say, thank you for all you A23 guys.
The patient service to get my problem out.
The R4iDSN Card for DSi/DSiXL/ Nintendo 3DS (www.r4idsn.com) + Kingston MicroSD 2G bundles, Save Even More with Value Bundles! You get more for your money when you buy these popular R4 card alone with memory card together - at the lowest price.This bundles includes a R4iDSN card and a Kingston MicroSD 2G.
-Support WOOD R4
-Support the DSi Firmware V1.4.3
-Support the N3DS
-Compatible with all DS editions of different kinds of language
-Supports DSL / DSi / LL / XL
-Supports Action Replay cheat
-Support SDHC (Micro SD 4G,8G,16G,32G)
-2nd generation storage device (no booting tool required)
-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
-Automatically detect saver type
-Saving directly to MicroSD card, not to onboard chip
-Supports Moonshell and other homebrew.
-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
-Supports 4-scale-lightness adjustment ( DS Lite only )
-Supports the Soft Reset.
-Moonshell 2.02 support Software Reset function( Press START key back to the R4i menu)
Kingston MicroSD 2G
No matter where you are--at home, the office, the airport, school, or an internet--Kingston's microSD removable memory card enhances your mobile life. You can share your content collections with friends, family, and colleagues easily with this removable storage solution specifically designed for mobile phones with expansion slots.
The Kingston microSD memory card also helps you move data between phones. If you're changing service or upgrading your handset, the microSD lets you easily transfer phone lists, settings, or ringtones. Its ultra-small size consumes very little power from your handset, to give you longer battery life on your DS console.