Acer Extensa 5220 - Manual (Page 21)

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Acer eNet Management can save network settings for a location to a profile,
and automatically switch to the appropriate profile when you move from one
location to another. Settings stored include network connection settings (IP and
DNS settings, wireless AP details, etc.), as well as default printer settings.
Security and safety concerns mean that Acer eNet Management does not store
username and password information.