Edimax Technology EW-7722PnD - Manual (Page 18)

6. Please input encryption key (or passphrase, depends on encryption
method) here, then click right arrow.
7. Network card will attempt to connect to access point now, this may require
few seconds to minutes, please be patient. When
you see there’s a check
shown beside the access point you wish to connect, your computer is
connected to access point you selected. The connection status will be
displayed in configuration utility also.
(see example picture below).