PS1/2 GameShark for playstation

[Steevsee]

Hi to all.
Just bought an old playstation (original) and it came with this GameShark cartridge.
Unfortunately it didn't have a user manual with it and I'm not too sure how to use it.
I assume I just plug it in at the back and turn it on? From what I can tell, there should be codes already setup on the cartridge, ready to use.

Anbody else still have one and remeber how to use it?

 

[Joe88]

yea, my friend used to have one before they moved to memory card and cd's

just plug it in and flip the switch on it to the on position and it should boot up
codes should be on there, if you want to add you can add more manually (very annoying)