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3.  Select a 2.4 GHz WiFi network to extend and click the Continue 
button.
4.  Type the network password (also called passphrase or security key) in 
the Password field and click the Continue button.
5.  Select a 5 GHz WiFi network and click the Continue button.
If your router does not support the 5 GHz band, click the Skip button.
6.  Type the network password (also called passphrase or security key) in 
the Password field, and click the Continue button.
The following screen displays:
7.  In the Name (2.4G SSID) and Name (5G SSID) field, type the 
names (SSIDs) for your new extender WiFi networks and click the 
Continue button.
You can use the same security settings as the settings for your 
existing network by selecting the check box.