Two Computers accessing the Internet at the same time

I want two laptops of my colleagues and I to access the Internet at the same time. china Telecom only takes the root network cable to the house. How can we achieve this without affecting each other? Thank you.

There are two methods: one is routing and the other is using (switch/hub/NIC)

1) Route: There are already available on the upstairs. One more point is that the two machines must be set to DHCP to dynamically obtain the allocated URL. If you must set an IP address, it must be in the route CIDR block. Tplink-r402 router less than 110 yuan.
2)
A) switch/hub
Enter the switch/hub to connect the two cables to your two computers. Set one host (dial-up) and the other as the slave computer.
The four-port tplink switch and the four-port hub are respectively 35 yuan and 48 yuan.
B) NIC: The NIC is inserted into the host and connected to the other computer with another line. This is the lowest cost. A tplink8139 Nic only costs about 20 yuan.

Note: The price above is subject to a regional price difference. Take Shanghai as an example.