Obviously you cannot use the codes without having the unit attached.
The simple interface shows installed codes, available codes from the site, and remaining space.
With Game Shark (temporarily) out of the picture, Datel saw a chance to gain new turf and began selling the Action Replay in the US.
Now, of course, Mad Catz is making a serious (and effective) effort to raise the Game Shark brand.
After you insert the Action Replay and power up your handheld you are met by the main menu screen, from which you can choose Start Game, Select Game, Options, and Management.
Options include sound prompts, colors, and keyboard layout for entering codes manually.