Sterlco A3 Blender Control and Data Acquisition Software - Manual (Page 22)

Page Number 22
Running the Cables and Hardware to
interconnect they system
Depending on your expertise and preference you can either purchase
CAT5 cables to length with the connectors already attached to both ends.
This makes it somewhat difficult to get the connector into the blender panel
because of the head on the cable, but not impossible. Either way you will
need to have some sort of Hub, Switch, or Router to interconnect all of the
blenders with the PC. If you already have a plant LAN then you should just
run drops to each blender and one to the PC from your main network. If
this will be a stand-alone system then you can purchase a hub or switch to
accomplish the same thing. A 5-port hub cost around $40 and is shown
below:
5-port Hub