Instead of paying an electrician to run Ethernet cables you may purchase this pre-made Category 5 Ethernet cable to connect terminals to a hub or to a remote printer.
This cable comes with male RJ-45 connectors on each end.
To connect terminals you do need to connect this cable to a hub as this is not a ",no-hub", cable.
To connect to serial remote printers you will need an RJ-45 to 9-Pin serial converter for each end of the cable.