The N5DS 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; The N5 card enables your DS to accept a MicroSD memory card and you can now watch movies, play music, browse pictures, read e-books and so much more! It is the complete solution with no need to purchase any additional components or any messy software and truly the easiest media enhancer you could ever imagine owning for your DS console.To simply put it, this is a must have peripheral for any regular DS/DS lite owner.

●obtain files
Supports roms, multimedia files, or Homebrew games of any size

● copy files
Directly Drags and drops all files into the MicroSD(TF) card from Computer

● Run games/movies
Plugs and plays in SLOT-1 without any passcard and supports all version of DS

●Main features:

Compatible with DS & DS Lite
Integrated PassMe (Passcard or unnecessary flash)
Lance backup without clean patchage
Easy to use, simply drag and drop files
Compatible with micro SD different speeds, even slower.
Updated firmware possible
Control via touch screen and skin changed
No need for battery backups are saved directly on the micro SD
No loss of backup
Auto-detection of the type of backup and backup file generated automatically
Support Homebrew
Watching Live video, mp3 listening and reading txt file via Moonshell
Supports WiFi, the rumble-pack and web browser
Support Micro SD up to 32GB

Source From:http://www.dsn5.com/index.html