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  1. ‎Docsis 3.1 | Xfinity Community Forum

    Dec 29, 2024 · I bought a new modem router that has DOCSIS 3.1, does Comcast support DOCSIS 3.1?? if not, I will exchange it for a 3.0.

  2. DOCSIS3.0 is slow but consistent while DOCSIS3.1 is faster but fails ...

    Jul 24, 2023 · It's probably a line issue. DOCSIS 3.1 modems are backwards compatible with DOCSIS 3.0, but also support signaling modes that 3.0 doesn't. Comcast runs a mixed …

  3. ‎Docsis | Xfinity Community Forum

    Dec 24, 2024 · Actual Docsis speed.What is the actual version? They support DOCSIS 3.0 and 3.1 devices. Some version 2 devices may be "grandfathered". DOCSIS 4 is coming, date …

  4. SB8200 Modem using Docsis 3.0 - Xfinity Community Forum

    Nov 28, 2024 · Figured a Docsis 3.1 modem might help. After I set up the new modem, however, I noticed it was running in Docsis 3.0 (green lights instead of blue on the front). I will say my …

  5. Equipment Upgrade Notice from Xfinity | Xfinity Community Forum

    Jan 13, 2023 · Because of a certificate expiration issue related to the DOCSIS 3.0 modem I’m currently using, I need to upgrade my equipment. The email has a link to modems I can …

  6. ‎DOCSIS 3.1 connectivity problem with ARRIS SB8200 | Xfinity …

    Jun 3, 2025 · DOCSIS 3.1 connectivity problem with ARRIS SB8200 I replaced my DOCSIS 3.0 modem DOCSIS 3.1 one (ARRIS SB8200) after upgrading my Xfinity internet plan (500Mbps …

  7. Not seeing improved upload speeds after upgrading to a Netgear …

    Dec 11, 2024 · Not seeing improved upload speeds after upgrading to a Netgear CM2000 DOCSIS 3.1 modem I’m on the gigabit plan and my download speeds were as expected with …

  8. Time to Upgrade Modem or Not? | Xfinity Community Forum

    May 23, 2024 · Time to Upgrade Modem or Not? I currently have the TP-Link TC-7620 DOCSIS 3.0 (16x4) with max speed of 686 Mbps. Receiving emails that Xfinity internet is now giving …

  9. DOCSIS 3.0 channels | Xfinity Community Forum

    Jun 10, 2022 · The modem will use all the DOCSIS 3.0 QAM and DOCSIS 3.1 OFDM channels it can. Your plan just determines how much of that bandwidth Comcast lets you use. Most of the …

  10. ‎DOCSIS 3.1 Modem not provisioned correctly (DOCSIS 3.0 QAM …

    Mar 13, 2020 · I'd rather just provision my DOCSIS 3.1 modem appropriately. Something that sticks out to me, I thought you could only get gig speed tier via the DOCSIS 3.1 / OFDM …