Honestly I have no idea what this damn thing is called, I've found several different names slapped on to it that actually other Datel products.  But regardless of whatever this thing is called you plug into the GBA slot and it will overwrite data for Nintendogs (Lab, Dachshund, Chihuahua, & Best Friends [no Dalamatian support] versions) and Mario 64 DS allowing you unlock everything early. Those are the 5 games supported by this product and it does not come with any original manuals or accessories.  Product has been tested and has worked on both a copy of Best Friends and SM64DS.