If anyone is still having problems seeing a USB to Ethernet connection in Network settings, here's what worked for me.
Easily connect your Mac computer to an Ethernet network with the Apple USB Ethernet Adapter. Small and light, it connects to the USB 2.0 port of your Mac and provides an RJ-45 connector that supports 10/100BASE-T performance.
1. I'm using the Apple dongle, USB to Ethernet. OS is High Sierra 13.13.4
2. Could not see the connection in network settings.
3. When you plug in the dongle, go to the menu bar, and click on About this Mac. Choose System Report. Scroll down to the USB section. You should see AX88772 (it's important that the dongle is plugged into the USB port on the MB). I think that's what the dongle wants in terms of the driver, which for some reason seems to have been broken in this iteration of OS.
Robin pat tester manual. 4. Go to the ASIX website and download the driver for AX88772. I used the latest version 2.6.0
5. Install the package. The machine may give you a message saying your security preferences are blocking it. Just go to security preferences and tell it to allow installation.
6. The machine will ask to restart. Restart it.
7. Go to network settings. You should now see the option for the USB to Ethernet connection. Connect your Ethernet cable to the dongle, and you should be in business.
Hope this helps. Just wasted 5 hours of my life over a few days trying to figure this out, and add in two hours with the ever polite, but in this case unhelpful Apple support people.
MacBook Pro, macOS High Sierra (10.13.4), USB to Ethernet Issues
Posted on
If your USB to ethernet adapter isn't working now that you've upgraded to macOS Sierra, there are a number of things that we can try in order to get it working again.
The first thing we'll want to do is to reset your Mac's SMC and NVRAM.
Reset the System Management Controller (SMC) on your Mac
If the adapter still isn't functioning after both resets check to see if your Mac recognizes the device correctly in System Information. From the Apple Menu select About This Mac, then click the 'System Report..' button. Once you have the System Information window open, check the USB category on the left.
OS X: About System Information and System Profiler
If it doesn't appear in System Information, see the articles linked below.
macOS Sierra: If a USB device isn’t workingmacOS Sierra: Check your device’s USB connection
However, if you do see the device in System Information, you may need to verify that the network service appears correctly. From the Apple menu choose System Preferences then Network. You should see an entry similar to 'Ethernet' on the left. If not, see follow the steps in the article below to add it. Once adding it, test to see if your connection works with Wi-Fi disabled.
If it does appear in Network, please let us know what you see on the right hand side when you select the service, as well as the name of the service as it appears and we can go from there!
Regards.
Sep 28, 2016 6:41 PM