MacBook Air – no internet connection after connecting ID-card reader
This problem affects only users with MacBook Air laptop. If you are using Apple USB Ethernet Adapter for cabled internet connection then after connecting ID-card reader to the USB port the internet connection is lost.
This problem is not related to ID-card software.
MacBook Air users have reported this error to Apple already 2011 (https://discussions.apple.com/thread/2768456?start=0&tstart=0).
Unfortunately there is yet no solution for this problem.