cause

First, this is a kind of restrictive protection made by telecom operators to prevent too many users from using a network cable;

Second, if you use a router, you can still use a network cable for multiple computers. There are 7 computers that need to surf the Internet. You can install two network cables or buy an 8-port route.

Installation step

Prepare two network cables

The first one is ready, that is, the network cable passes through the "modem".

The second is to buy the network cable sent by the router. If you don't send it, you have to make a network cable with crystal heads at both ends. )

1. Change the local connection to get the IP address automatically.

2. The network cable from the modem is connected to the WAN port on the router, and any one of the 1, 2, 3 and 4 ports of the router is connected to the network cable port behind the computer host.