Licensing Information

What do these 2 licenses allow for?

SYMC BACKUP EXEC 2012 AGENT FOR WINDOWS WIN PER SERVER I/O ESSENTIAL 12 MONTHS  -  Quantity: 1

SYMC BACKUP EXEC 2012 AGENT FOR WINDOWS WIN PER SERVER BNDL COMP UG LIC EXPRESS BAND S ESSENTIAL 12 MONTHS - Quantity: 1

(Those have 2 separate Serial numbers and are added to the Backup Exec Console) - It's installed on the main server and it backups itself.

What if we need to backup an additional server (install an agent)? Are we covered by the previous licenses or we need to buy any additional?

I've attached a screenshot of what I see at the console. By the way, why there are 2 identical Serial Numbers added to the list (are they repetead?).

Thank you!!