The external wifi card on my pc can see many networks that the built-in RapsPi wifi can't. Aboveall, the network I want to connect to.
I would like to use the USB card on the raspberry, but the problem is the network I want to connect with: it has an Enterprise certificate and the only way I have to connect is is to create a wpa-supplicant-conf file and connect to it at startup of RPi (otherwise it is grayed out in Raspbian wifi menu).
In order to do this I need that the USB wifi card run as main wifi when I power on the RPi.
Do you know how I can do this?