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Charter Spectrum Updates Approved Modem List for New Speed Tiers

Phillip Dampier January 11, 2018 Broadband Speed, Charter Spectrum, Consumer News 5 Comments

[Clarification 1/15/2018: This list only covers customer-owned modems approved by Charter Communications. It is not a comprehensive list of modems that may have been supplied directly by Charter/Spectrum, or its predecessors Time Warner Cable or Bright House Networks, which are obviously also acceptable. However, if you have a modem supplied by Time Warner or Bright House, it might not support the upgraded faster speeds Spectrum now offers. You might want to contact customer service to verify whether your current modem is capable of performing at the speeds now provided.]

Charter Communications recently increased broadband speeds for most of their customers, and many cable modems that are still in use from the days of Time Warner Cable and Bright House Networks cannot support the company’s fastest speed tiers. As a result, Charter has updated their approved/recommended cable modem list to help customers obtain a modem that can support faster speeds.

Those customers who have moved away from a legacy Time Warner Cable or Bright House internet plan can get a free cable modem from a local Spectrum cable store. If you prefer to still own your own, here is the updated listing. We recommend choosing a model capable of supporting up to 300 Mbps speed because additional speed upgrades are likely in the future. Most customers now receive at least 100 Mbps service, so at least choose a model that can support that speed.

Gigabit (940 Mbps) Tier

At this time there are no modems that have passed certification testing for the Spectrum Internet 1 Gig speed tier (940Mbps). You need to use a cable modem supplied by Charter/Spectrum.

400 Mbps

Vendor Model
ARRIS SB6190
ASUS CM-32_AC2600
Linksys CM3024
NETGEAR C7000-100NAS
NETGEAR CM600

300 Mbps

Vendor Model
ARRIS SB6183
ARRIS SB6190
ARRIS SBG6900-AC
ASUS CM-16
Motorola MB7420
Motorola MB7540
Motorola MB7550
NETGEAR C6250
NETGEAR C6300
NETGEAR CM500-100NAS
SMC NETWORKS D3CM1604
TP-Link Archer CR700
TP-LINK TC-7620
Zoom 5370

100 Mbps

Vendor Model
ARRIS SB6141
ARRIS SBG6400
ARRIS SBG6580
ARRIS SBG6580-2
ARRIS SBG6700-AC
D-Link DCM301
LINKSYS CM3008
Motorola MB7220
Motorola MG7310
Motorola MG7315
NETGEAR C3000-100NAS
NETGEAR C3700-100NAS
NETGEAR CM400
NETGEAR 450 CG3000Dv2
TP-LINK TC-7610
TP-LINK TC-W7960
ZOOM 5341J
ZOOM 5345
ZOOM 5350
ZOOM 5352
ZOOM 5354
ZOOM 5360
ZOOM 5363
ZyXEL CDA30360

60 Mbps

Vendor Model
ARRIS SB6120
ARRIS SB6121
Netgear CDM31T

These modems are NOT RECOMMENDED, but are still allowed on the Charter/Spectrum network.

Vendor Model
ARRIS SBG6950AC2
ARRIS SBG7400AC2
ARRIS SBG7580
ASUS CM-32
LINKSYS CG7500
LINKSYS CM3016
NETGEAR C3000v2
NETGEAR C3700v2
NETGEAR C6300-100NAS
NETGEAR C6900
NETGEAR C7000v2
NETGEAR C7500
NETGEAR CM700
NETGEAR N450-100NAS
TP-LINK CR500
TP-LINK CR1900
TP-LINK TC7650
ZOOM Motorola MB7621

Currently there are 5 comments on this Article:

  1. Nick says:

    This can’t be all the approved modems.

    They only just recently gave me a Ubee DVW32CB for my 300mbit service.

    Why would they themselves give me a modem that’s not on their own recommended list?

  2. John Becker says:

    I concur with Nick that there’s no way in that this is the list of all approved modems. In fact, when I click on the link provided in Mr. Dampier’s original posting, the underlying page source apparently geo-locates where I’m connecting from, and instead of displaying the approved modem list, it almost immediately redirects to the TWC version of the Spectrum website.

    Also, I was just in my local cable modem office this month to see which cable modem they have to give to customers and it is a brand that isn’t even on this list, and as I recall it was a DOCSIS 3.0 (not 3.1) design that has a maximum D/L speed was 343Mbps. So while the list provided above may apply to some “Charter/Spectrum” customers at this time, there’s no way that it applies to all of the customers.

    Furthermore, where I live, they’ve only recently been to offer 60Mbps service, which has since been upgraded to 100Mbps which is CURRENTLY the top-tier speed advertised for the entire area. Also, there are still numerous cable modems that have hardware designs that predate even the adoption of DOCSIS 3.0 standard that can reliably provide 100Mbps. Consequently it would seem that the list posted above is most likely a list that Charter/Spectrum Tech Support can most easily support and therefore only wants to support in the future. However, I don’t think that means that you have to use a Cable Modem / Gateway that is on their newly released (absurd wish) list, and that would seem to be especially true if you live in one of their service areas in which your local SPECTRUM office isn’t even handing out cable modems that are on this list.

    I’m still using my own NETGEAR CG3000D (which is actually a 2009 hardware design) because the modem that the local SPECTRUM office had provided me turned out to be such a complete piece of crap that it shouldn’t have even been manufactured. And although I’m aware that my CG3000D might be so outdated that it could have security flaws that need to be patched, at least works much better than the single brand & model of cable modem that my local SPECTRUM has been providing to customers (since August 2017).

    • Charter has not fully converted former Time Warner Cable customers to its legacy Charter website and support platform, which is why TWC customers entering zip codes for TWC service areas are still diverted to Time Warner’s website for now. While there are older modems still in use across Charter/TWC/BH’s service area, Charter reserves the right not to activate customer-owned modems that are not on its approved list when the last vestiges of the TWC brand and website disappear sometime this year. We’ve encountered readers who signed up for service and have run into activation problems for modems not on the approved list of customer-owned modems, even though current customers may still be using this equipment.

      If the modem was originally supplied by the cable company, it will be supported until such time as they contact you to warn you it will not be in the future. The best way to look at this list is as a guide for future customer-owned modem purchases as a Charter/Spectrum customer.

  3. Curious George says:

    use this list too

    the ubee is on this list under Modems offered by Spectrum

    https://www.timewarnercable.com/en/support/internet/topics/modems.html#/spectrum-modems

  4. Folks, I should have been more clear that this list is for approved CUSTOMER-OWNED modems for Charter/Spectrum customers. It does not include modems supplied by Charter itself (or those approved by either predecessor Time Warner Cable or Bright House Networks). I will make an update to clear that up.

    Obviously if Charter gives you a modem, it is approved. 🙂







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