Fusion640T Network Setup

Trying to setup our Mazak Fusion640T Nexus on the network. The machine was delivered with the ethernet cable running from the back to behind the controller but it isn't connected anywhere. The machine is a few years old and no one can remember how it was ordered and what not. I opened the controller box but do not see anywhere for an ethernet plug in(no network adapter). Does anyone have a picture of their Fusion with a network adapter plugged in?? Having a hard time figuring out which type of NIC we need.