The ETCNet1 Remote Interface Unit (RIU) provides a remote mirror of the ports on the back of the console. It has three DMX ports, one RFU port, a parallel printer port, and two VGA display ports.
The RIU has both BNC (ThinNet) and RJ45 (10BaseT) connectors. To configure which network connection type is supported, there are internal jumpers which must be set correctly.
Jumper 14 should always be installed.