This Memory Card allows you to save up to 251 blocks of game information. That's more than four times the memory of GCN Memory Card 59. The number of blocks needed to save your game information will vary from game to game. You will only be able to save or load game information for games that are designed to use Memory Cards.
Please read the Game Disc instruction booklet for the game you are playing for more information about how to save game information and how many blocks are needed for that specific game.