05-04-2016, 03:46 PM
For your guest OSes to recognize USB items connected to your host, you need to install the VirtualBox Extension Pack that matches the version of VirtualBox you are running. You'll find that at www.virtualbox.org. Go to the Downloads link. From there, find the Extension Pack for your version. After downloading it, I think you just have to double click on the downloaded file and the Extension Pack will install.
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