You don't have the driver installed.
Windows will see the device ID and display it in Device Manager, however you need to install the device driver get full functionality out of the device. When you registered your 22VSL you got Studio One Artist, but the device drivers are available as a separate download both in your account and on the download page here:
http://www.presonus.com/support/downloads/AudioBox-22VSL
Download and install the drivers, then launch Studio One and under select Audio device the AudioBox 22VSL will show up.