The newest product in the Supercard line up is the Supercard DS One. The SC DS is a Slot 1 solution, meaning instead of using the GBA slot it uses the DS slot and is the same size as a standard DS game. This means you will no longer need a Superkey in order to play in Nintendo DS mode! It is an all-in-one solution, just add a microSD memory card and you are ready to go! 

Feature list:

- Uses a standard MicroSD/Transflash memory card.
- Plug and Play (no need for an  additional GBA cart or any type of Flashme/Passme device)
- 100% support for clean ROMs - no need to patch anymore
- no PC software required, just drag and drop the file from your PC to the micro SD memory card
- Hardware save support, Unlimited storage, supports FAT, FAT32
- High speed R/W system, supports all high speed flash memory cards without any slow down
- The best hardware design. It is compatible with all current and future DS consoles, same size as original DS cartridge - does NOT stick out!
- Fully upgradeable firmware and skinning support

Additional functions which may be built in (not 100% sure):
- Can interact with GBA slot. Support SC Rumble Series as a rumble pak
- Using the Supercard DS software (not required), you can trim ROMs, allow software resetting, and many other functions!