Graphics Cards

There should be a big white sticker like this on the back side of the graphics card.  This same sticker can be found on the outside panel of the box it came in.  If both stickers do not match up, please replace the card with the retailer as soon as possible.

Motherboards

There are two main stickers on motherboards. There is a small one that just has an Nvida serial number (usually starts with a 0), and a bigger sticker like this one that contains both the EVGA part number (P/N), and serial number. 

This sticker can be in several areas, depending which motherboard you have.  Here are some examples: