Cheat and Gameshark on PCSX2

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!

Gameshark 2 v1.3 for PS2 – Snyder Repair Services

Game Shark 2 Video Game Enhancer V1.0 For PS2 Disc Only - Tested Working

Game Shark 2 - PS2 Game - Used – Retroaholics

Metal Gear Solid 2 Sons of Liberty Game Shark Strategy Guide Book

PS2-Gameshark Shopee Brasil

Any idea how to work this ps2 game shark : r/Gameshark

GameShark 2 V2 (Playstation 2) – J2Games

GameShark 2

Found this in one of the PS2 systems I purchased. What is it