
It’s unlikely that all of your ports would fail at once which means the fix is probably an easy one. I had 'USB ethernet' in Network on a Late 2013 MBP retina, couldn't get ethernet to work via thunderbolt port, had router/internet access via wifi. I am guessing audio is ok but not checked it yet. In order not to purchase many dongles (and spend too much on the Apple Store) I had a look on the usual sites and found a nice one from Cable Matters (no, sadly I have no sponsorship from them) which had them all: ethernet, USB … 8:48 AM in response to gautamshah I have a Macbook Air running 10.7.4 and I'm trying to connect to ethernet using the official Apple USB to ethernet adapter. Restart the Mac, and everything now should be working fine. To start the conversation again, simply ask a new question. I think I will start from the beginning by uninstalling the device and have the computer re-find it.
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If the adapter still isn't functioning after both resets check to see if your Mac recognizes the device correctly in System Information. In checking with Beta-5 I am noting that yes, there is a Mac address for the adapter but see message that cable is unplugged. Usb ethernet adapter is not working after updating to mac sierra. The Apple USB-Ethernet adapter can not be found when connected via an Anker USB hub since installing 10.12. Double-click the appropriate folder for your operating system. Click again to stop watching or visit your profile to manage your watched threads. Search for keywords, tags (), and users (user:appleseed). This site contains user submitted content, comments and opinions and is for informational purposes only. Once adding it, test to see if your connection works with Wi-Fi disabled.

So, the wireless mouse uses the third USB-C port and the fourth is for charging.

My system is: More Here are three things to try, starting with the most common fix.
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AX88179 USB Ethernet and MacOS 10.13 High Sierra When I purchased the new Macbook Pro last year, one big issue was the lack of widely used interface ports. Use an Ethernet cable to connect your computer’s Ethernet port to a modem or other network device (for example, a switch or a router). From the Apple menu choose System Preferences then Network. Could not see the connection in network settings. Also usb 3 ports are not working only usb 2.0. Except that now it boots to the login screen and can't do anything because no USB port is working so no mouse and keyboard.
