Samsung PN51D490A1DXZA - Manual (Page 93)

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English
● The Samsung Wireless LAN adapter may not be recognized when using a
connection via a USB hub or via a USB extension cable other than the cable
supplied.
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Network Settings ( Auto )
Most wireless networks have an optional security system that requires devices that
access the network to transmit an encrypted security code called an Access or
Security Key. The Security Key is based on a Pass Phrase, typically a word or a
series of letters and numbers of a specified length you were asked to enter when
you set up security for your wireless network. If you use this method of setting up
the network connection, and have a Security Key for your wireless network, you
will have to enter the Pass Phrase during the setup process.