Q: usb ethernet not working after updating to macos sierra
Hi,
I am using late 2014 Macbook pro 15" running Mac OS Sierra.
Before updating to sierra, on OS EL Captain, USB ethernet was working fine but after the update to Sierra the USB ethernet is not working, "showing cable unplugged".
Kindly advise, and thank you in advance.
MacBook Pro (Retina, 15-inch, Mid 2014), macOS Sierra (10.12), null
Posted on Sep 21, 2016 2:52 AM
Are you using the Apple Thunderbolt>Ethernet adapter?
- Try resetting the SMC and NVRAM/PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
- Try starting in Safe Mode
OS X: What is Safe Boot, Safe Mode?
https://support.apple.com/en-us/HT201262
- Boot to Recovery and repair the startup disk
OS X: About OS X Recovery - Apple Support
https://support.apple.com/en-us/HT201314
Also does the adapter work in Recovery mode?
This is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum or other appropriate forum.
Posted on Sep 21, 2016 7:19 AM
