Samsung UE19D4010NW E-Manual page 71

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If HIGH PURE THROUGHPUT (Greenfield) 802.11n mode is selected
and the Encryption type is set to WEP, TKIP or TKIP AES (WPS2Mixed)
for your wireless router, Samsung TVs will not support a connection in
compliance with new Wi-Fi certification specifications.
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If your wireless router supports WPS (Wi-Fi Protected Setup), you can
connect to the network via PBC (Push Button Configuration) or PIN
(Personal Identification Number). WPS will automatically configure the
SSID and WPA key in either mode.
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