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Radio links
You can easily establish links between two or more devices, with these
links being maintained even if the devices are not within a line-of-sight of
each other.
Security
Two advanced security mechanisms ensure a high level of security:
Authentication prevents access to critical data and makes it impossible
to falsify the origin of a message.
Encryption prevents eavesdropping and maintains link privacy.
LAN
The computer has built-in support for Ethernet LAN (10 megabits per
second, 10BASE-T) or Fast Ethernet LAN (100 megabits per second,
100BASE-TX).
This section describes how to connect/disconnect to a LAN.
The Wake-up on LAN function consumes power even when the
system is off. Leave the AC adaptor connected while using this
feature.
The Link speed (10/100 megabits per second) changes automatically
depending on the network conditions (connected device, cable or
noise and so on).
LAN cable types
The computer must be configured properly before connecting to a LAN.
Logging onto a LAN using the computer’s default settings could cause a
malfunction in LAN operation. Check with your LAN administrator regarding
set-up procedures.
If you are using Fast Ethernet LAN (100 megabits per second, 100BASE-
TX), be sure to connect with a CAT5 cable or higher. You cannot use a
CAT3 cable.
If you are using Ethernet LAN (10 megabits per second, 10BASE-T), you
can connect with a CAT3 or higher cable.
Connecting the LAN cable
To connect the LAN cable, follow the steps as detailed below:
Satellite U840W series
User's Manual 4-11