Ethernet cable

I am using iMac (Retina 5K, 27-inch, 2019)

After updating to the latest version 10.15.7 of macOS Catalina the Ethernet cable is not getting detected and seeing the message "This computer does not appear to have any PCI Ethernet cards installed".

Also cannot see the controller device and it shows "This computer doesn’t contain any Controller devices".

iMac 27″, macOS 10.15

Posted on Sep 26, 2020 8:12 PM

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3 replies

MrHoffman

Level 10

146,929 points

Sep 26, 2020 8:17 PM in response to Gurinder_Singh

Reset the SMC and NVRAM, create and switch to a new network location, and boot into Safe Mode, and try again.

Sep 26, 2020 8:46 PM in response to MrHoffman

Hello MrHoffmann,

Tried the above sequentially as suggested but still the problem persists. the PCI Ethernet card is not showing up and the also the Controller devices.

MrHoffman

Level 10

146,929 points

Sep 26, 2020 9:09 PM in response to Gurinder_Singh

Try Diagnostics. Next stop is likely a discussion directly with Apple Support; link in upper right.

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