hfield

Your Mac will only connect to the Internet via one “network port” at a time. A network port is any device your Mac can use to connect to the Internet–for example the wired Ethernet, the Wi-Fire and Airport. To change the priority order in which OS X connects, open System Preferences and click on Network under the Network & Internet heading. Then click on the gear icon, below the list of network ports. From the drop-down menu, click on Set Service Order. This will allow you to change the order in which your computer chooses the port to connect.  The Mac will use the highest priority port that is currently connected, so if you want it to use your Wi-Fire, move it toward the top of your list.  It’s often best to keep Ethernet at the top, but remember the list is only a priority list and automatically skips disconnected network devices.  If your Wi-Fire or any other device doesn`t happen to be connected, your Mac automatically moves on to try the next one.