If you have more than one computer in your home, you can use a wireless router to connect all of your computers to the Internet. The computers will split the Wi-Fi connection. For normal use, you will not notice any difference in speed of your Internet connection. High-bandwidth activities, like streaming movies, on one computer can cause slower connections on other computers in the network.
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Connect the router to a broadband or DSL modem with an Ethernet cable. Power on the router and the modem.
Configure the router for first use according to the manufacturer's instructions. Different routers have different configuration steps. In general, you will need to connect a computer to the router using an Ethernet cable. Insert an installation disc into the computer and follow the on-screen prompts, which will include naming the network and setting security options. Once you complete the steps, the first computer will be connected to the network.
Turn on another computer. Click the "Network" icon in the Windows task bar.
Click the name of your network, then click "Connect." Enter the password you gave the network. Click "OK." Repeat for any other computers with which you want to split the Wi-Fi connection.