Acer 1620 Series - Manual (Page 34)

Getting familiar with your computer 24
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Connectivity options
Your computer has built-in connectivity options, enabling you to hook
up to a network or communicate over a phone line.
Ethernet and LAN
The integrated network feature allows you to connect your computer
to an Ethernet-based (10/100 BASE-T) network.
To use the network feature, plug an Ethernet cable into your
computer's network jack, and then connect the other end to a network
jack or hub on your network.
See Windows Help and Support for information on setting up a
network connection.