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Wifi not work after connect USB to Macbook Pro ...

My Macbook Pro 2016 non-touchbar cannot connect to Wifi after connect USB flash or external hard disk to it. I can  use wireless when ejected USB and I used macOS Sierra version 10.12.6. Please help.
Ps. That's no problem if I connect USB-C adapter to charge.

Hello chinnpao_taing, 

Thank you for using Apple Support Communities. 

I see that you are having an issue connecting to Wi-Fi after you connect a USB device to your MacBook Pro. My first suggestion would be to reset the SMC on your Mac. This support article will walk you through the process: Reset the System Management Controller (SMC) on your Mac 

If you are still having the same issue, then you will want to boot the computer into safe mode and test the issue. The following article will walk you through the process and give you some guidance on what to do if the issue is or is not present when in safe mode. 

Use safe mode to isolate issues with your Mac

Best regards. 

I have tried it and also all the tricks articles associated with it online and nothing can fix it. I also have the same problem with Macbook Pro 2017 at workplace that apple should know about it then provide solutions for customers. Thanks.

chinnpao_taing,

At this point, especially since you are having similar issues with another MacBook Pro, it might be more helpful for you to contact Apple Support where you can discuss about your issue directly. You can see your contact options here: Contact Support

Cheers. 

最后更新：2017-08-18 11:29:57

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