Most likely your wireless card was not supported out of the box because of...

Most likely your wireless card was not supported out of the box because of licensing issues on the drivers from the device manufacturers, in most cases you will be able to download and install the correct drivers from the web once you make a connection. So what would help most is if you make your initial installation while on an ethernet connection so you can get the correct drivers installed.

But to be sure we would have to know exactly what wireless card and chipset you are using. Please let me know if you need us to guide to to get that information in a Linux based OS.

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