Edimax CAP1200 User Manual page 51

WPS must be disabled to use MAC-RADIUS authentication. See
IV-3-3. for WPS settings.
MAC RADIUS
Password
Select whether to use MAC address or
password authentication via RADIUS server. If
you select "Use the following password", enter
the password in the field below. The password
should match the "Shared Secret" used in
IV-3-4. RADIUS.
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AP Mode