Connecting To The Network; Ethernet Connections; Wireless Connections - Lenovo ThinkPad T420si User Manual

DANGER
Only recharge the battery pack strictly according to instructions included in the product
documentation.
DANGER
Do not put the battery pack in trash that is disposed of in landfills. When disposing of the battery,
comply with local ordinances or regulations and your company's safety standards.
DANGER
There is a danger of an explosion if the backup battery is incorrectly placed. The lithium battery
contains lithium and can explode if it is not properly handled, or disposed of. Replace only with a
battery of the same type. To avoid possible injury or death, Do not: (1) throw or immerse into water,
(2) allow it to heat to more than 100°C (212°F), or (3) attempt to repair or disassemble it. Dispose of
it as required by local ordinances or regulations and your company's safety standards.

Connecting to the network

Your computer has one or more network adapters for connecting to the Internet and to your company's
wired LAN or wireless LAN network.
Note: Some models come with a built-in wireless WAN card enabling you to establish wireless connections
over remote public or private networks.
For more information, refer to "Access Connections" on page 20.

Ethernet connections

You can connect to your network or a broadband connection, such as DSL or CATV, by use of the Ethernet
feature built into your computer. This feature enables you to do 1Gbps half or full duplex data transmission.
To connect to a network via Ethernet, you can use Access Connections.

Wireless connections

Wireless connection is the transfer of data without the use of cables by means of radio waves only.
Depending on the frequency used for data transmission, the area covered, or the type of the device used for
data transfer, the following categories of wireless networks may be available to you:
Wireless LAN
A wireless local area network covers a relatively small geographic area, such as an office building or a house.
Devices based on the 802.11 standards can connect to this network.
Wireless WAN
A wireless wide area network covers a broader geographic area. Cellular networks are used for data
transmission, and access is provided by a wireless service carrier.
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Chapter 2 Using your computer
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