My PS2 can't read the GameShark memory card, does anyone know how

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Looking for more information on this Gameshark Massive Memory Card Plus, seems to be fairly rare, anyone ever use one of these before? : r/dreamcast

I recently bought a GameShark memory card and the disc isn't recognizing it. what should I do? : r/ps2

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I recently bought a GameShark memory card and the disc isn't recognizing it. what should I do? : r/ps2

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