HELP Locating the Serial Number

[permitit]

I am tryiong to fine the serial number on my Nexux 7 box. I have one that says SSN and another that says CSSN which is it?

 

[Chocoburger]

It's the CSSN, I checked on mine, under "About Tablet" and the internal Serial Number matched the CSSN on the box of the Nexus 7.