Edimax EW-7811UN User Manual page 28

7. All wireless access points in proximity will be displayed here. If the
access point you want to use is not displayed here, please try to move
your computer closer to the access point, or you can click 'Refresh
network list' to rescan access points. Click the access point you want
to use if it's shown, then click 'Connect'.
8. If the access point is protected by encryption, you have to input its
security key or passphrase here. It must match the encryption setting
on the access point.
If the access point you selected does not use encryption, you'll not be
prompted for security key or passphrase.
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