How to Check if an Ethernet Port Is Configured for a Dynamic IP. Every device connected to a network must have its own Internet Protocol address to communicate with other devices.

Ethernet cables are needed for internet connectivity. If you are having issues, you can do a simple test to see if it is faulty.

The indicator lights for active Ethernet connections might help you troubleshoot problems with a Wi-Fi router. While Wi-Fi and Ethernet may seem like two utterly different pieces of technology ...

Without an Ethernet port, the MacBook Air is a wireless-only device. But, with a cheap, portable adapter, you can hook it up to a wired network whenever you need.