How to Use a Router to Split a Wired Internet Signal

By Ruri Ranbe

Cat-5, or Ethernet, cables support speeds up to 100 Mbps, while Cat-5 enhanced supports speeds up to 1000 Mbps.
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A router establishes a local area network, a collection of computers that can communicate with one another within a limited range. Once a router is connected to a cable modem, it can share an Internet signal with all of the clients associated with the LAN. Wireless routers are convenient and, in most cases, require little effort to configure, but Wi-Fi decreases broadband speed, reducing network performance. Businesses that use bandwidth-intensive applications should use a wired network, as it offers fast, reliable speeds beyond what Wi-Fi can provide.

Confirm the cable modem is connected to the router; the Ethernet cable attached to the rear of the modem should be plugged into the "WAN" or "Internet" jack on the back of the routing device.

Connect an Ethernet cable to a workstation. Plug the other end of the cable into one of the LAN ports on the back of the router.

Repeat the above step for all other workstations or network-capable devices in the office.


You may need to reset the modem or the router after connecting a workstation to the network. Unplug the power adapters connected to each device and then reconnect them after waiting five to 10 seconds.