Note: This code will only work with PSN accounts in the US.

Web Browser
1, Load your web browser, follow this link (https://store.playstation.com/), and log into your PSN account
2, Click on the “Account” tab, and then select “Redeem Prepaid Card” from the menu on the left.
3, After entering the code, you will see a list of the items you are about to receive. Scroll to the bottom and click “Redeem”.
4, You can navigate to the “Media” tab to ensure your content is now available.

PSN cards allow to add some value to your virtual wallet safe and easy. You may do that without giving an information about your credit card.