This documentation provides information on installing the SB6120 Cable Modem.
Before Installation
Before beginning the installation, check that the following items were included with the SURFboard SB6120 Cable Modem.
![Image](https://arris.my.salesforce.com/servlet/servlet.ImageServer?id=015a0000002qCCh&oid=00D30000000kUAL&lastMod=1384299796000)
System Requirements
- Microsoft Windows, Macintosh, UNIX, or Linux operating system with the latest service packs and
patches must be installed on the computer. - Pentium class or better processor installed on the computer.
- 10Base-T or 10/100Base-T Ethernet adapter with proper driver software installed on the computer.
- TCP/IP Setting is setup to Obtain IP Automatically on the computer.
NOTE: For assistance with TCP/IP setup, refer to Answer # 19947.
Â
Other Requirements
- 75-ohm coaxial cable with F-type connectors is required to connect the SB6120 to the nearest cable
outlet. - If a TV is connected to the cable outlet, 5 to 900 MHz RF splitter and two additional coaxial cables are
required to use both the TV and the SB6120 - Cable service must be activated with an Internet Service provider to access the Internet and other
online services.
Precautions
To Install SB6120
- Connect one end of the coaxial cable to the cable outlet or splitter.
- Connect the other end of the coaxial cable to the cable connector on the SB6120. Hand-tighten the connectors to avoid damaging them.
- Plug the power cord into the electrical outlet. This turns on the SB6120.Â
NOTE 1: Allow the gateway five to thirty minutes to find and lock on the appropriate communications channels after the gateway is on.
NOTE 2: The power cord does not need to be unplugged when the gateway is not in use.
 - Plug the power cord into the power connector on the SB6120.
- Connect one end of the Ethernet cable to the computer.
- Connect the other end of the Ethernet cable to the Ethernet port on the SB6120.
Â
Â
Check that the lights on the front panel cycle through this sequence:
![Image](https://arris.my.salesforce.com/servlet/servlet.ImageServer?id=015a0000002qCCr&oid=00D30000000kUAL&lastMod=1384299843000)
![Image](https://arris.my.salesforce.com/servlet/servlet.ImageServer?id=015a0000002qCCw&oid=00D30000000kUAL&lastMod=1384299882000)
Optional
LED operation available in some locations:
RECEIVE and
SEND lights are blue when the downstream and upstream channels are connected with
DOCSIS 3.0 bonded channels.