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Connecting the Modem

This product is for indoor use only. Do not route the Ethernet cable(s)

outside of the building. Exposure of the cables to lightning could create a

safety hazard and damage the product.

Before installing the cable modem:

•

Check with your service provider to ensure broadband cable service is available in your area.

•

Choose a location in your home where your computer and cable modem are preferably near

existing cable and electrical wall outlets.

1. Check that a coaxial cable is connected to a cable wall outlet or RF splitter (optional).

2. Connect the other end of the coaxial cable to the Cable connector on the cable modem.

Use your hand to tighten the connectors to avoid damaging them.

3. Connect the Ethernet cable to the Ethernet port on the cable modem.

4. Connect the other end of the Ethernet cable to the Ethernet port on your computer.

5. Connect the power cord to the Power port on the cable modem.

6. Plug the other end of the power cord into an electrical wall outlet.

This automatically powers ON the cable modem.

SURFboard® SB6121 • DOCSIS® 3.0 Cable Modem • User Guide

365-095-25896-x.1

Connecting the Modem

Figure 3 – SB6121 Connection Diagram