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Linksys Support

Cable Modem with USB and Ethernet Connections (CM100)

• Modem for high-speed cable Internet connection
• Compatible with all DOCSIS Internet service providers
• “Always on” connectivity without monthly equipment rental charges 

 

Support Sections

FAQs are frequently asked product questions. Select Downloads for user guides and firmware updates.

  • Overview
  • Guide Me
  • FAQs
  • Forums
  • Forums


    • Linksys CM100

      I recently got a new Linksys CM100 cable modem. Is it advisable to have the cable modem standing or does it need to lie...

    • CM100 Status Page

      Downstream SNR shows the strength of the signal to your cable modem as compared to the noise on the line...

    • CM100 not finding signal

      Hi,I had a surfboard 4200 (motorola) and it worked fine for quite a few years but the speed would drop down for some reason...

    • Linksys Hardware Vs the ISP

      I'm having lots of Problems with my cable internet service charter tech that came over saw my stack of Linksys gear...

    • cm-100 no longer compatible with comcast

      I think I have read somewhere that CM100 is a docsis 2.0 modem only??? Or maybe I am wrong. Wizzard wrote:CM100 supports...

    • Linksys CM100 firmware upgrade?

      Is there a firmware upgrade for the Linksys CM100? My CM100's web interface keeps crashing after a week of use.

    • BEFCMU10 versus CM100

      Hello everyone! Which cable modem is better; the Linksys BEFCMU10 Cable Modem or the Linksys CM100 Cable Modem? Than...

    • Port forwarding questions

      Finally figured out that it is an issue with the ports being blocked from my workplace, which is where I was trying to connect...

    • Block specific external ip address

      Not possible.1. Unless you forward a port the server can't be accessed anyway.2. If you forward a port to the server set...

    • Auto DHCP and Static IP together

      Definitely! That's the usual practice, if you have devices that needs port forwarding you set static IP address on it. Just...

    • File sharing with AVG 8.5 FW doesn't work

      I had a similar problem, and it turned out to be because I didn't create a new profile in the Firewall in AVG 8.5 Internet...

    • VPN connection Problem

      The port forwarding is under the Applications Gaming then Port Range Forward. The application filed can be anything you...

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Forums


  • Linksys CM100

    I recently got a new Linksys CM100 cable modem. Is it advisable to have the cable modem standing or does...

  • CM100 Status Page

    Downstream SNR shows the strength of the signal to your cable modem as compared to the...

  • CM100 not finding signal

    Hi,I had a surfboard 4200 (motorola) and it worked fine for quite a few years but the speed would drop...

See All Forum Topics

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