Lenovo USB 3.0 Ethernet adapter (MacBook PRO) 2. Once that was removed the Ethernet adapter started to work. Hopefully the above tips can help you resolve your external display not working in macOS issue. 0. 0. Before starting banging your head check if the device is detected by your laptop. The adapter includes a CD but of course, MacBook Air does not have a CD/DVD slot! Thunderbolt or Thunderbolt 2 If you're using a Thunderbolt or Thunderbolt 2 cable with a Thunderbolt display or other device, use the Apple Thunderbolt 3 to Thunderbolt 2 Adapter . Hi - my ethernet is not working. Apple A1277 USB ethernet adapter not working on MacBook Air. Ok, that is not a big problem, I find the Ethernet Adapter driver and you can get it here, you can download it. Apple: MacBook Pro not recognizing USB ethernet adapter in macOS, but does in BootcampHelpful? Replacement for Macbook Mac Desktop USB Ethernet Adapter 3 Ports USB 3.0 Hub USB to Rj45 Lan Network Card - Walmart.com USB Ethernet Adapter Not Working With Many MacBook Airs (But ... Genuine APPLE USB to RJ-45 Ethernet Adapter A1277 for Macbook Retina Air Pro | eBay I have a 2019 Macbook Pro with four usb-c ports. 7. You may also want to fix your Mac not starting up issue, if that is why your external display doesn’t work. I bought an Insignia USB 3.0 to Gigabit Ethernet Adapter with my early 2015 MacBook Pro. Hi, I was asked to fix a MacBook Air, circ Mid 2013, where the usb ethernet has stopped working, tested new hardware and same connection on other Mac, all worked - found that the issue was in the Microsoft USB Bluetooth adapter used for the Mouse, it was plugged into the USB Mac Keyboard. ... MacBook Pro not recognizing USB ethernet adapter in macOS, but does in Bootcamp. Surely all the 3rd party adapters available on eBay are guaranteed to be functional. Apple USB Ethernet Adapter has a self-assigned IP address and will not be able to connect to the Internet. Related: We also have an in-depth guide on how to set up a generic USB keyboard for your Macbook. I have a macbook air so have to use an adapter since this laptop doesn't have a standard ethernet port. I was trying to find how to uninstall the drivers but cannot find them. Then it g off. After I installed the driver on my MacBook Air, it worked right away. If you're using an Ethernet cable with your device, use a third-party USB-C to Ethernet adapter, such as the Belkin USB-C to Gigabit Ethernet Adapter. the ATT tech was here and checked everything out and couldnt' figure out why it wasn't working because his equipment said it was live up to the end of the ethernet and the wireless works. Thankfully, someone suggested on the product page where to download the USB to RJ45 driver for the Mac OS. 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