Fix Ethernet Drivers Problems after a Mac Security Update An Ethernet port is a socket on a computer system that permits the utilization of an Ethernet connector. It is commonly found on networking devices, along with routers, computers, modems, video game consoles, and televisions. After upgradation of OS X, many Apple users are finding difficulty with their Ethernet connection. Many of the users filed a complaint online for not getting connected to their Macs and moreover, their Ethernet port is not working efficiently. If you have any problem in connecting with your Internet then checking your Ethernet and WiFi is the right choice. If you are unable to test by yourself, then you must take help of certified tech experts for Technical Support for Apple products. Before proceeding, you must check the bad update was installed, these include: You need to follow these steps to check if the update was installed on your computer system. At first, launch the system information app (Applications > Utilities or you can hold down the option key & select Apple menu > system information. Now, in the left column, you need to look for the software header and increase it if needed. Select on installations. You need to click the software name header to alphabetize the list. At last, scroll through the list and you need to look for “Incompatible Kernel Extension Configuration Data”. Look at the version number. If you receive 3.28.1 version, then you have the bad update with you. Therefore, it becomes necessary for you to get the latest version.