Here's how to do it for a MacBook, MacBook Pro and a MacBook Air Step 1: Shut down the Mac and then connect it to the power cable. The process is slightly different for different Mac models. set the boxes to obtain ip and dns automatically. Re: Motherboard Ethernet port not working. Apple offered an external Apple 10/100Base-T Ethernet USB adapter as an US$29 option for the 'original' and 'NVIDIA/Late 2008' models. However it is possible to connect to wired Ethernet networks with an adapter. Have never found a solution for that.) Indeed, MacBook Air models really do not have an onboard Ethernet port. re-add the ethernet adapter device configure the rest of the new location as required, and use it instead of the one you were previously using (Even with that working, I still have another annoying issue with the adapter: if I plug it in while the laptop is asleep, it's not detected when it wakes. Same issue, yet Safari works in recovery. I’ve tried blowing away the plist, a new account and even reformatting. Local IPs are routed but nothing from the internet. I can ping sites by dns name or IP but no Apps or browsers can access the internet. Press and release the volume down button.
If that fails, to force restarting an iPhone X, XS, XS Max or iPhone 8: 1.