Edimax BR-6524n Manual page 100

Please click 'Apply' to save changes, or click 'Reset' to clear the texts in
all fields. If you click 'Apply', the following messages will appear:
You can click 'Continue' to back to previous page and continue setting, or
click 'Apply' to restart the broadband router so the changes will take
effect.
WPA pre-shared key
WPA (Wi-Fi Protected Access) is also an encryption method and is safer
than WEP. It's recommended to use WPA instead of WEP when you need
to use encryption to protect your data security.
displayed at 'Key Format' field. You can use
any alphanumerical characters (0-9, a-z, and
A-Z) if you select 'ASCII' key format, and if
you select 'Hex' as key format, you can use
characters 0-9, a-f, and A-F. You must enter at
least one encryption key here, and if you
entered multiple WEP keys, they should not be
same with each other.