Hello Evert,
A standard USB cable won't work, you will need a console cable. Please follow this link for same: https://extremeportal.force.com/ExtrArticleDetail?an=000083712
Once in WiNG, if you need to access the AP via GUI, please contact us so that we may provide you with the necessary application for same.
Rgds,
Chris
------------------------------
Christoph S.
------------------------------
Christoph S.