To use the Kingston 2gb micro SD TF memory card in your DS you need a R4 revolution. It is not as simple as that either. When you buy a R4 it cannot be used without a micro SD card. A 2GB is recommended. Thats why it states "for" in the title discription. A card reader too is needed if you dont all ready have one.A tutorial is avalible in english on you tube. Just search for R4 DS. Hope some of this helps

Key Features:

• Capacity: - 2GB
• Standardized, complies with SD card specification standards
• Versatile when combined with the included adapter, can be used as a full-size SD card
• Dimensions: - .43" x .59" x .039" (11mm x 15mm x 1mm)
• Speed Rating: - 8.8 MB/sec. read, 6.5 MB/sec write
• Operating Temperature: - 32° F to 140° F (0° C to 60° C)
• Storage Temperature: - -20^o to 85^o C / -4^o to 185^o F
• Weight: - 0.04 lbs (1.41g)
• Ultra-Portable extremely small footprint design
• Warranty: Lifetime

With Kingston's microSD card, your content is no longer tied to your unit. Share your content collections with friends, family and colleagues easily with this removable storage solution specifically designed for units with suitable expansion slots.

Kingston's 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 ring tones. Its ultra-small size consumes very little power from your handset, to give you longer battery life on your phone.

Each Kingston microSD comes with an SD adapter that gives you the convenience to use it as a full-size secure digital (SD) card in SD-enabled devices, including media readers. Now you can instantly move pictures between multiple devices for sharing and printing.

At home, in the office, at the airport, in an Internet cafe or at school no matter where your mobile life takes you trust Kingston's microSD.

What's included

1 * Adapter

1 * kingston micro sd 2gb