Toshiba Satellite P875 - Manual (Page 79)

for operation in the license-free 2.4GHz and 5GHz band, local radio
regulations may impose a number of limitations to the use of wireless
communication equipment.
Radio Frequency Band 5GHz (5150-5850 MHz) (Revision a
and n)
Band 2.4GHz (2400-2483.5 MHz) (Revision
b/g and n)
The range of the wireless signal is related to the transmit rate of the
wireless communication. Communications at lower transmit range may
travel larger distances.
The range of your wireless devices can be affected when the
antennas are placed near metal surfaces and solid high-density
materials.
Range is also impacted due to "obstacles" in the signal path of the
radio that may either absorb or reflect the radio signal.
Bluetooth wireless technology
Some models 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 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.
P870/P875
User's Manual 3-33