HedgeHog4S Hognet Port

Hello, I am a HedgeHog4 user, looking at purchasing a HedgeHog4S that I found for a good deal as I would benefit from the HogNet port to be able to incorporate TouchOSC into my workflow.  I'm having trouble finding definitive information, it looks like the HedgeHog4S consoles come with the HogNet port disabled, what is the procedure for enabling it?  Is this simply a software upgrade? Something that needs to be purchased from HES?  Thank you in advance for the help.