Your phone and PC are able to share a single internet connection. In many cases, only one internet cable runs to each desktop and it is not practical to run a second cable.
The downside to this configuration is an additional cable running into the phone, and a brief loss of internet to the PC if the phone needs to rebooted for any reason.
Disconnect the network cable from your PC and connect to the ‘Internet’ jack on the back of your phone
Connect from the ‘PC’ jack on the phone to the ethernet connection on your PC
Yourphoneispoweredbythenetwork. It should boot up as soon as connected.
Rebooting yourphonemay cut the internet to your PC briefly