DEC DECstation 5000 Model 100 Series Hardware Operator's Manual page 117

Connect the terminator and a ThinWire Ethernet network
12.
cable, or connect two ThinWire Ethernet network cables.
If you are connecting the terminator,
You can connect the terminator to either end of the
T-connector. Align the slots inside the terminator
cap with the pins on the end of the T-connector, push
the terminator onto the T-connector, and twist the
terminator to the right to lock it.
Attach the ThinWire Ethernet network cable to the
other end of the T-connector. Align the slots on the
collar of the network cable connector with the pins on
the T-connector, push the network cable connector onto
the T-connector, and twist the network cable connector
to the right to lock it.
If you are not connecting the terminator,
Attach two ThinWire Ethernet network cables to the
T-connector. You can attach either cable to either end
of the T-connector.
Align the slots on the collars of the network cable
connectors with the pins on the T-connector, push the
network cable connectors onto the T-connector, and
twist the network cable connectors to the right to lock
them.
Follow the directions in the section "Finding Your Ethernet
13.
Station Addresses", on page 6-13, to find the address of the
Ethernet controller that you are using.
Optional Network Connections 6–9