Samsung UE40ES7000U E-Manual page 188

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If the wireless router is set to
Hidden (Invisible), you have to
select
the correct
and
connection.
4. If the Enter security key screen
appears, go to step 5. If you selected
a wireless router that does not have
security, go to step 7.
5. If the router has security, enter the
Add Network
Network Name
Security Key
and enter
to establish the
(SSID)