may have bought the wrong version

I have ordered norton internet security standard for 3 PCs

 

I have a desktop and laptop and a netbook.

 

Can someone please clarify if I will be able to download the netbook edition for the netbook and use one of my 3 standard licences? I have seen posts on this forum saying the licences are interchangeable and also that they are not!

 

If not then I would prefer to run the netbook edition on my desktop and laptop rather than the standard edition on the netbook. Is there anyone I can contact to get the license changed?

 

Thanks