As a staff person, if you click the Info Hub link in the staff options dropdown, it will open the Info Hub using the access level assigned to your staff contact.
This menu item allows quick access for staff to get into the Info Hub and access Resources for the Forum or any other items configured in the Info Hub for the members.
If your staff contact does not have an an access level assigned, it will use the default access level set under Setup -> Staff and User Access -> End User Setup -> Login Settings tab.