Also a newer Mac's hardware (or older Mac's) may not be compatible. If the USB to Gigabit Ethernet Adapter is working, then the laptop should automatically boot to the respected item assuming your have good Internet access.įYI, just because the adapter works with Windows and another Mac, it does not necessarily mean the adapter is compatible with this Mac especially if the versions of macOS are different. Needless to say don't enter your WiFi credentials. See if you can boot the Apple Diagnostics or Internet Recovery Mode while using the USB to Ethernet Adapter. You may also want to create a new user account, log out the main user and log into the new user account to see what happens. Since the adapter does not require any drivers, then try booting into Safe Mode to see if anything changes. perhaps the MacBook section may be better thus reposting the same question here. I've posted a same question on the Big Sur forums, but with no help or reply whatsoever. Tried downloading the Realtek drivers and installing, but also doesn't work.Įxpert advice needed ASAP!: Can't get Ethernet setup with USB adaptor I'm suddenly seeing a problem where my MacBook is refusing to connect to Ethernet, despite that a known working USB to Ethernet Adaptor (Realtek chip) is connected to the MacBook.This rules out the chances that the adaptor is defective.
Tried another USB Adaptor with a Realtek chipset that used to work, but to no avail.USB Adaptor is 100% known good - works on a Windows PC, iPad, iPhone, and another Mac.Note how it is detecting the USB adaptor, but doesn't appear in Network Preferences. I thought I might need to delete the connection and add it again, only to find that you can't add the USB Ethernet connection in Network Preferences, as shown below. Even if I connect a cable to the adaptor, it doesn't go online in the Network Preferences panel. So no drivers are necessary, and has worked flawlessly in the past.Īll of a sudden, it would not detect the Ethernet connection at all, even though the System Information clearly shows that the "USB 10/100/1000 LAN" is connected and working. The adaptor I'm using is a standard USB to Gigabit Ethernet adaptor, using a Realtek chip. I'm suddenly seeing a problem where my MacBook is refusing to connect to Ethernet, despite that a known working USB to Ethernet Adaptor (Realtek chip) is connected to the MacBook.
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