Most users experience normal network functionality using the existing drivers already built-in to macOS. However, users who are encountering any unexpected network issues can download and install an updated Realtek driver that has resolved these issues. This driver is compatible with macOS up to macOS 10.15.7, and incompatible with macOS 11 and newer.
I’m Having Issues With the Ethernet Port on My UD-CA1A or UD-CAM Not Functioning As Expected on a Mac Host SystemLast Update: February 25th, 2021
Article ID: 386402