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Bluetooth wireless technology
Some computers in this series have Bluetooth wireless communication
function which eliminates the need for cables between electronic devices
such as computers, printers and mobile phones. When it is enabled,
Bluetooth provides the wireless personal area network environment which
is safe and trustworthy, that is quick and easy.
You cannot use the computer's built-in Bluetooth functions and an external
Bluetooth adaptor simultaneously. For reference, Bluetooth wireless
technology has the following features:
Worldwide operation
The Bluetooth radio transmitter and receiver operate in the 2.4GHz band,
which is license-free and compatible with radio systems in most countries
in the world.
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), Fast Ethernet LAN (100 megabits per second,
100BASE-TX) or Gigabit Ethernet LAN (1000 megabits per second,
1000BASE-T).
This section describes how to connect/disconnect to a LAN.
Do not install or remove a memory module while Wake-up on LAN is
enabled.
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 (10/100/1000 megabits per second) changes
automatically depending on the network conditions (connected device,
cable or noise and so on).
Qosmio X870/X875 series
User's Manual 4-33