Fix for USB Ethernet not working (macOS)

The USB Ethernet on the UD-CAM didn’t show up right away on my 2018 MacBook Pro running 10.14.3. This is due to System Integrity Protection not playing nice with the Realtek NIC driver.

To fix it, restart your machine while holding Cmd-R to bring up the recovery menu. From there, select the Terminal from the Utilities menu. Enter csrutil disable and restart the system. It should be working right away once you’re back into the OS.

Bear in mind you do lose some security by disabling SIP; the NIC driver not loading is by design with that–the system doesn’t know it can be trusted. What we’re doing here is telling the machine to allow unknown drivers to run anyway.

Hi Erica,

Thank you so much for sending this information over! We appreciate you sending this information over, and we apologize if the messaging for this particular fix was not more evident on our Amazon listings and product pages. We will make sure that all of this is updated to clearly outline these steps!

Please let us know if you have any additional questions or concerns, and I would be more than happy to assist.

Thank you for your time,
Product Owner & Technical Support