when wireless and local Ethernet both to connect to internet, which device is has high priority to connect to internet?

Hi, You can use the command “netstat -r” to see which connection have higher priority. Less matric value indicates lower priority. The default is automatic, it automatically assigns a metric value based on the network connection's rated speed. If you want to change it, you may set the metric. For more information, you can refer the following link: http://support.microsoft.com/kb/299540