Apple PowerBook Duo Dock (including Duo Dock Plus) - Manual (Page 27)

2 Disconnect one Ethernet cable from the adapter of the network device immediately to the
left or right side of the dock.
3 Plug one end of an Ethernet cable into the socket you have just freed and the other end
into one of the sockets of the dock’s Ethernet adapter.
4 Plug the Ethernet cable you disconnected in step 2 into the remaining socket of the
dock’s Ethernet connector box.
Connecting the Duo Dock to the end of an Ethernet network
Connecting the Duo Dock to the end of a network will not interrupt
communication among network users. You do not need to shut down any
computers or notify users before adding the dock to the network.
1 Plug the short cable extending from an Apple Ethernet adapter into the Ethernet port on
the dock.
The Ethernet port is at the center of the connector panel on the back of
the dock.
2 Use an Ethernet cable to connect the adapter to the network as shown.
21 Using Your Duo Dock on an EtherTalk Network