Hardware Setup
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AC1200 WiFi Cable Modem Router Model C6220
3. Wait for Comcast XFINITY to confirm that your modem router is active.
4. If you do not get an Internet connection with the modem router, ask Comcast XFINITY to
look for your modem router online, and do one of the following depending on what Comcast
XFINITY tells you about your modem router:
• If the modem router is not visible, Comcast XFINITY can give you instructions to verify
why the modem router does not connect with your high-speed Internet service.
• If the modem router is visible to Comcast XFINITY, reboot the modem router. Check
your online status again.
Perform a Speed Test
To determine the accurate Internet speed, visit the speed test website of your cable Internet
provider and perform a speed test.
If your actual speed is lower than your subscribed speed, contact your cable Internet
provider.