In a small percentage of macOS and Windows computer usage with the USB-C Pro Dock, we have found a behavior in which an Ethernet broadcast storm can be triggered that can potentially disrupt network activity. This behavior is usually seen when the computer goes to sleep while connected to Ethernet switch through the USB-C Pro Dock.

If you are seeing this behavior on your computer, please immediately download and install this firmware update that will treat this behavior. This firmware installer is accessible on both macOS and Windows computers on either Thunderbolt 3 or USB connection.

If you have previously installed USB-C Pro Dock’s macOS Ethernet driver (KEXT file) that helped to correct this issue, we would encourage you to remove this driver in macOS Big Sur or Catalina as you no longer need this driver if above new firmware is installed to your USB-C Pro Dock. You can find the driver at this folder : /Library/Extensions/

And delete the driver file: AppleRTL815XEthernet110.kext

Then restart the computer.

Alternatively, you can find this by opening a Finder window, clicking on the Go menu option, and selecting the option ‘Go to Folder’. In the window that comes up, you can copy and paste the above folder path to immediately go to the driver folder.

Notes: USB-C Pro Dock Ethernet driver is not compatible with macOS Big Sur, please remove it and use Big Sur’s built in Ethernet driver.