How to Set Up a Comcast Wireless Gateway

Introduction

Your Comcast Wireless Gateway is fast and easy to setup.

This guide will walk you through the process.

xFi Wireless Gateway xFi Advanced Wireless Gateway
Comcast Wireless Gateway first version. Comcast Wireless Gateway second version.

? Which Wireless Gateway do you have?

  1. xFi Wireless Gateway
  2. xFi Advanced Wireless Gateway

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Your Comcast Wireless Gateway is fast and easy to setup.

This guide will walk you through the process.

xFi Wireless Gateway xFi Advanced Wireless Gateway
Comcast Wireless Gateway first version. Comcast Wireless Gateway second version.
  1. Connect the Coax cable to the back of your Gateway, and to the cable port in your home.
    Diagram showing coax connection.
  2. Connect the power cable to the back of your Gateway, and to an outlet in your home.
    Diagram showing power connection.
  3. Wait for the Power, US/DS, and Online lights to stop flashing and go solid for one full minute.
    Diagram depicting modem lights going solid.
    When you first plug in your Gateway, it can take up to twenty minutes for it to automatically sync, update, and reboot multiple times with your Comcast service.
    Do not unplug or turn off your Gateway during this time.

A wired connection is provided by an Ethernet cable. Most commonly, these are used by desktop computers and other equipment you don't move around often.

Ethernet cable plugged into device

If you don't connect a cable between your computer and your router, you are using a Wireless connection.

  1. Connect one end of the Ethernet cable to your Gateway.
  2. Connect the other end of the Ethernet cable to your computer.
    Connecting Ethernet cable to Gateway and computer.
  3. After a few moments, your computer will recognize the connection.
  1. Open your preferred web browser.
    • On your computer look for one of these icons.
      Main Desktop Browsers.
    • On your smartphone or tablet, look for one of these icons.
      Main Mobile Browsers.
  2. In the address bar at the top, type xfinity.com/activate, then press enter or return.
    Address bar with address typed in.
  3. Follow the instructions on screen to finish activating your Comcast account, and setting up a custom Wi-Fi network name.
    Xfinity Activation page.
In order to connect to a wireless network, you must have the required credentials. These are:
  • Wireless Network Name (SSID)
  • Wireless Network Key (Password)

Finding Network Credentials

Most wireless routers or gateways have a label with the default credentials. If the credentials aren't there, check the documentation that came with your device.
Default Wi-Fi credentials highlighted on router / gateway sticker.

If your Internet Service Provider (ISP) installed the wireless router or gateway, they might have left you a setup sheet which may have the credentials.

There are 2 main Operating Systems for personal computers currently available, Windows and macOS.

Windows
Windows runs on computers produced by multiple companies, such as Lenovo, Asus, Dell, Toshiba, Hewlett Packard, Acer, and Sony.Windows 10
macOS
Apple is the only company that makes macOS computers.macOS Mojave
  1. Click on the Notifications icon and then click on Network.
    notification center open with notifications icon and network highlighted
  2. Click the network you wish to connect to.
    available networks with an example network selected
  3. Choose if you wish to automatically connect to your network, and then click on Connect.
    selected network listed with connect automatically box and the connect button highlighted
  4. Enter in your security key and click Next.
    Security key field with next highlighted
  5. Choose whether or not you want to be visible to the network.
    Do you want your computer to be discoverable with yes and no boxes highlighted

    It is recommended to allow your PC to be discovered on private home networks because that allows you to see other wireless devices on the Network. If you're at a public location it is suggested to select "No".

  6. You can verify your connection by checking to see if it now says "Connected" next to the network.
    Notification showing you are now connected to Wi-Fi
  1. Click the Wi-Fi icon in the menu bar. By default it will be in the upper right corner near the time and date.
    Wi-Fi symbols.
     
  2. If Wi-Fi is off, choose Turn Wi-Fi on.
    macOS Wi-Fi menu with Wi-Fi On highlighted.

  3. The strength of each nearby network is shown next to its name. More darkened bars indicate a stronger network connection.
    Wi-Fi menu with signal strength indicator highlighted.

  4. Select the Wireless Network Name (SSID) of the network you want to connect to.
    Wi-Fi menu with networks highlighted.

  5. Networks that have a lock icon next to their name require a password. After you select your network, enter the network password when you're prompted. If you don't know the network password, check with the owner of the Wi-Fi network you're trying to join.

To continue, we need to know what Operating System your smartphone or tablet has.

There are 2 main Operating Systems for smartphones currently available, Android and iOS.

Android Smartphone
Android smartphones are produced by multiple companies, such as Samsung, LG, Motorola, Sony, Nokia, Lenovo, and HTC.Android Home Screen
iOS Smartphone
Apple is the only company that makes iOS smartphones.iOS Home Screen
  1. Open Settings on your phone or tablet.
    Android Settings.
  2. Select Wi-Fi.
    Android Settings with Wi-Fi highlighted.
  3. Select your home network from the list.
    Wi-Fi settings with Wi-Fi network highlighted.
  4. Enter your Wi-Fi password, then select Connect.
    Wi-Fi password dialog with password and Connect highlighted.

Depending on what iOS device (iPhone, iPad or iPod Touch) and which generation you have, the menu theme and options might look slightly different on your screen. However, the steps should be the same across all iOS devices and generations.

  1. Open Settings.
    iOS Settings.
  2. Select Wi-Fi.
    iOS Wi-Fi

    Next to the icon you will see one of following statuses:

    • Off - Wi-Fi feature is disabled
    • Not Connected - Wi-Fi connection is not established
    • [Network Name] - Wi-Fi connection is established
  3. Make sure that the Wi-Fi feature is enabled by flipping the toggle switch to the On position.
    Wi-Fi toggle switch highlighted in iOS settings.
  4. Your iOS device will automatically connect to the closest network you have connected to it in the past. The checkmark indicates you are connected.
    Checkmark highlighted next to Wi-Fi network name in iOS settings.
To Connect to a New Network

If you're connecting to a Wi-Fi network for the first time:

  1. Select the Network Name from the list.
    Wi-Fi networks highlighted in iOS settings.
  2. Enter the Password if required then select Join.
    Wi-Fi Password field and Join button highlighted in iOS settings.
To Connect to a Hidden Network

If the Wi-Fi network you wish to connect to is hidden, it won't appear in the list of available networks. However, if you know the network's exact name and password, it can be added manually.

  1. Select Other...
    Other highlighted in Wi-Fi network list of iOS settings.
  2. Enter the Network Name, choose the Security type, enter the Password then select Join.
    Network Name, Security type, Password fields and Join button highlighted in Wi-Fi connection of iOS settings.
  1. Connect the Coax cable to the back of your Gateway, and to the cable port in your home.
  2. Connect the power cable to the back of your Gateway, and to an outlet in your home.
    Advanced Gateway diagram showing coax and power cables.
  3. The light on the top of your Gateway will blink green and yellow. Wait until this light is solid white for one full minute before continuing.
    When you first plug in your Gateway, it can take up to twenty minutes for it to automatically sync, update, and reboot multiple times with your Comcast service.
    Do not unplug or turn off your Gateway during this time.

A wired connection is provided by an Ethernet cable. Most commonly, these are used by desktop computers and other equipment you don't move around often.

Ethernet cable plugged into device

If you don't connect a cable between your computer and your router, you are using a Wireless connection.

  1. Connect one end of the Ethernet cable to your Gateway.
    Diagram of back of Gateway with Ethernet Port highlighted.
  2. Connect the other end of the Ethernet cable to your computer.
  3. After a few moments, your computer will recognize the connection.
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