This will help you how to identify the product number, serial number and model name of your machine.
After purchasing a game through Origin, locate the code in the receipt email that you should have received. You need this code to install your game. If you cannot find the serial number, or you have deleted the email, you can find your code in your Order History by going to Origin > EA Account and Billing.
> Order History or directly by clicking. • Sometimes after making a purchase from the Origin Store, you may not receive an email containing your Product Code. Find your code in the Origin client • Restart the Origin client. • Close it by clicking Origin in the menu bar and selecting Exit, then open the client to log in again.