(First of all, I will introduce the method of using a router to terminate multiple computers to surf the Internet at the same time. The first condition is: a router. If you have a lot of computers, you can buy a multi-port switch. There are several straight-through lines for the network cable, one telecom mode (maybe you don't need a mode if you are a dedicated line), and at least two PCs (if you only need one, you can use a router, but it will lose the meaning of using a router. Original tp-lin)