Norton Security 5 devices

Good Day All

In our household, there is just myself and my husband. Each of us has our own Desktop PC with N360 currently loaded (will expire in Sept 2015).  The Norton account is under my name. Since the account page has been changed I find it difficult to find what I'm looking for, but currently the account has '2 of 3 seats installed' - Device Name: Ken's PC   and Device Name: Barb's PC

I purchased Norton Security 5 devices 1 year on sale to be kept and used come September. Can someone please confirm that this one product key will allow NS to be installed on both my PC and my husband's PC. I ask because I'm looking at the box the 'key' came in and it says, on an attached tag, it's for 5 devices and 1 user. This tag has been placed over the original box. If it matters, I'm in Canada.  

I'm pretty sure that this one 'key' can be used for both of our PCs, but just want to make sure.

Thanks in advance for your help

Barb