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

GameShark Video Game Enhancer [Playstation] : Playstation Accessories: Video Games

SharkPort for PS2 Code and Save Transfer Kit : Video Games

playstation 2 GameShark 2 Memory Card Dongles : Video Games

What does a gameshark ps1 memory card do? : r/Gameshark

GameShark 2 : Video Games

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

My PS2 can't read the GameShark memory card, does anyone know how to fix the issue? : r/ps2

PS1 PS2 Unlocked Save Collection 450 Saves 256MB Memory Card 100% Complete

7 Games That Defined The PlayStation 2, by Nick Miller, MBA

PS1/PS2: GAMESHARK MEMORY CARD FOR CODE STORAGE (USED) [Unit 1-A] - $16.99 : Cap'n Games, Inc., 1000s of New and Used Video Games!

How do you use the GameShark cartridge for backups? I have the lid button taped down, and original game in, but the disc never stops spinning to allow swapping in the backup.

Beat the biggest and toughest games with more than 465 pre-loaded codes including infinite health, ammo, and time. Blow the biggest PS2 games wide

GameShark PS2 Greatest Hits: 465 Codes for 10 PS2 Games (2005, Volume 1)