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Forum Discussion

keith78's avatar
keith78
Aspirant
Jul 29, 2021

CM500 Slow download speed

I have the Xfinity 400 Mbps package and when I connect my computer directly to the modem, I'm only getting between 60-90 Mbps download speed.  I called Xfinity customer service last night and they ch...
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Jul 29, 2021

What wired device do you have connected to the CM modem that your speed testing with?

What is the mfr and model# of the ethernet adapter in your PC? 

What speed testing apps are you testing with? 

Try a different wired PC to compare? 

  • keith78's avatar
    keith78
    Aspirant
    Jul 29, 2021

    I'm using my laptop.  It's a HP 17-x114dx.

    I don't know what my ethernet adapter is.  Not sure how to find that out. 

    I used the speed test on the Xfinity website and the speedtest.net. 

    I can try my wife's laptop and see if it's any different.  

     

    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User
      Jul 29, 2021

      Look at the network properties in Windows for the brand and model of the adapter used on the wifi and ethernet adapter. It maybe Intel. Ensure the drivers for these are up to date. 

      • keith78's avatar
        keith78
        Aspirant
        Jul 29, 2021

        It's a "Realtek PCIe FE Family Controller".  I went and updated the driver.  No change in speed yet.