Save files in just the .sav format will not work on the Acekard 2i and will not show up, but to make them show up just add .nds.sav (small letters only in both nds and sav) then place them in the folder with your games in it.
Example
Game Name.nds.sav
This will make the save files show up when you load up the game.
Example
Game Name.nds.sav
This will make the save files show up when you load up the game.
