SELECT * FROM Win32_PnPEntity WHERE DeviceID = '{0}'
I guess I didn't search long enough, here's a link which contains a lot of really good examples... http://msdn.microsoft.com/en-us/library/aa394587%28v=vs.85%29.aspx
The 'table' I was looking for is Win32_PnPEntity
it listed all 155 devices I'm connected to.