D-Link Xtreme N Duo DAP-1522 User Manual page 58

Section 3 - Configuration
If you choose WEP, enter the wireless security password
and click Next to complete the Setup Wizard.
Select Auto (WPA or WPA2) and click Next to continue.
Enter the WPA/WPA2 Personal Passphrase and click
Next to establish wireless connection.
D-Link DAP-1522 User Manual 58