Wireless support is poor. You need the version of app-network which has been stuck in testing for over a year, and a version of app-wireless-ap which is also in testing and certainly has bugs. It is a third-party app and I've tried and failed to get the developer to finish it. Then there is the question of drivers and I've no idea which they take. If you can, google the card and "centos 7" and see if you get any hits. If Centos supports it, ClearOS does.
Note WiFi cards in a server are generally not ideal as it is hard to get them into a good signal location and it is not good to use log aerial cables.