Apple PowerBook Duo Dock (including Duo Dock Plus) - Manual (Page 18)

Virtual memory
The PowerBook Duo can borrow space on a hard disk to increase the
memory available for using programs. The disk space is called virtual
memory.
You can set aside virtual memory space on the hard disk belonging to either
the PowerBook Duo or the Duo Dock.
If you set aside virtual memory space on the dock’s hard disk, virtual memory
will not be on when you use the PowerBook outside the dock. The next time
you dock, virtual memory is turned back on automatically.
If you set aside virtual memory space on the PowerBook’s hard disk, virtual
memory is always available.
Networking
In addition to using your PowerBook’s built-in LocalTalk port to access a
LocalTalk network, you can also access another network type—such as
Ethernet or Token Ring—if you have a Duo Dock Plus, which has a built-in
EtherTalk port, or you have installed the appropriate NuBus card in your
dock. The first time you use the other network, you must open the Network
control panel and select that network type.
Once you have made a selection, the PowerBook remembers it whenever the
PowerBook Duo is docked. Whenever the PowerBook is not docked,
LocalTalk is the network type.
For more information about setting up and using your dock with an Ethernet
network, see Chapter 2 of this guide.
Modem
If you want to use an external modem with your PowerBook Duo System,
connect the modem cable to the Duo Dock port marked with this icon: W
If your PowerBook has an internal modem, select the Internal Modem in the
PowerBook control panel before opening your telecommunications program.
12 Chapter 1