Edimax Technology EW-7722In - Manual (Page 73)

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characters if you select ASCII. 128 bits encryption
is safer then 64 bits, but the data transfer speed
will be slightly reduced.
Show Password Check this box and the WPA pre-shared key or
WEP key you inputted will be shown, but not
replaced by asterisk (*).
When you finish with setting and want to save changes, click ‘OK’ button,
or click ‘Cancel’ button to discard all changes you made.