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Young Ninja Group (ages 3-5)

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John Duran
John Duran

Can I Buy My Own Cable Modem For Comcast

There is a list of Xfinity supported cable modems that are compatible and supported with their network (and many modems are compatible even if not supported). Comcast recently upgraded their network to DOCSIS 3.1, but it is backwards compatible to previous generation DOCSIS model modems (e.g. DOCSIS 3.0).

can i buy my own cable modem for comcast

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These modems are all good as well, use DOCSIS 3.0 technology, have high (close to 1 Gbps) but slightly lower top speed capabilities, in exchange for lower prices. These are also all top sellers on Amazon with 4+ star customer ratings.

In my view, Xfinity Voice is overpriced, with much cheaper VOIP landline options out there that you can connect to any router (see Ooma). But, if you are sure you want it, the following modems are Xfinity Voice compatible:

The following routers all handle 1 Gig (1000Mbps+) speeds, offer great value, and are highly rated Amazon best sellers with 4+ star customer ratings and pair nicely with the modems above. The first 3 offer newer Wi-Fi 6 technology.

Do you need a better modem to run 2 iPads and 2 iPhones plus a computer. My service seems to be running slower. Not sure if you need a better router or modem. I do have up a Cisco Linksys EA2700 router 3months old.

I wanted to add my recent experience with xfinity. I currently run a phone and an 8 way wired router off my modem with another wireless router. This supports the 7 or 8 computers we have in addition to smart phones and kindles. Xfinity had an offer to swap my modem for a newer faster one. The switch should have been seamless. Right. Just 3 simple connections, the phone jack, cable and internet connections and reboot the router. There is also an automated number to reconfigure. Well after many hours of phone calls and needless waiting I finally gave up and just put my old modem back in.

Thanks for the helpful tips and links and advice, etc. I just recently got my first apartment and signed up for Comcast. I decided to rent the Gateway for the first month while I hunted for a good modem/router to use in its place.

internet and devices to connect to internet are changing all the time, technology is always evolving, so, it is important to get the right equipment according to the right need, not all the modems and models are now suited to work fine with comcast, because they have been upgrading equipment that may the older modems not to work properly, you have to be diligent and cautious, to purchase the ones that are designed to be 100 % compatible with the new technology Comcast is using, for instance, that supports 2GHz and DOCSIS 3.1 .So, do your research and your numbers too to see if is something you can afford or not.

I bought the recommended modem and router from Amazon last Friday and installed them Tuesday. was on the phone with Sheila from Comcast for about 30 minutes because I could not attach the ethernet cord to my Macbook Air. She is a great service person.

So can someone tell me? I am trying to replace my comcast modem Arris Mod-TM602G/CT with a SB6141 only to find only three plugins on the back the TM has four the one I need for my wireless router so now what?

So it turns out the call quality on my ooma seems to suck according to my wife, had it since August 2014. So she wants to ditch the ooma (return to Costco) and go back to the comcast voip which we still pay for since we never cancelled our triple play package. I just replaced my comcast modem.

Same as Tiajo, I saw my bill everything went up. My regualr cable fee is included with our association fee. Beside that I have Home Infinity alarm,voice and internet. Total bill about $110 that is including the rental SMCD3GNV modem. What modem is capable with the comcast one. Please advise. I want to change as soon as possible.Thank you

And I use the EMTA device that Bask Talk sent with the Ethernet cable to the Arris SBG6580. It is working as my number was already ported (did not want to change phone numbers) to Comcast. Guess what Basic Talk supplies is a dumb EMTA device (no registration required?!) and they have not asked for it back.

I hung up with them and chatted to another rep for a few minutes. They also said that they were getting an error and they raised the issue to some kind of support team. They said that Comcast was blocking my modem, and the support team would resolve it.

Hi G.E. I have Comcast Triple play with Comcast rental modem. Comcast agents gave me two conflicting answers when asked if my alarm (non Comcast) will still work if I put my account on seasonal hold. Will it or how is best way to handle this? They must have numerous customers who want security alarm to work but still be able to use seasonal hold. John

Great article. Huge help with deciding to get my own equipment after the rental increase. What really pushed me were the bad reviews on the new xb6 I think it is. The advanced model with a hint of a few $ more as well. Ordered a Netgear router and debating about Netgear or Arris for the cable box. Will decide later in week. Just hesita t in setting this up and begging for help from Xfinity. Hoping it was more user friendly.

I just hooked up a new Comcast rented xFi Advanced Gateway (their name for the router/modem). I wanted to try theirs for a month because my new service operates at a fast 400 mbps. Their router is really noisy. There is a distinct fan and humming noise that is already driving me crazy. I want to buy my own replacement that can handle this speed plus one land phone line, but want to get the most noise free one. Do you have a recommendation? The Aries TM822 that I used to use (I own it), made no noise at all. Thank you, Alan

I would like to own my own modem and stop paying rent to Comcast. Based on your instructions it seems pretty doable. However, you refer both to a modem and a router. I only have a modem with my Comcast rental. Do I need a router? I have unlimited voice for my phone (Landline) and xfinity mobile service. My internet download speed is 200mbps.I do not want to change my phone service at this time.

This is about returning your XFINITY modem/router device in the U.S.A. You do NOT need to find a service center. Take it to any UPS STORE (Not UPS shipping, but The UPS Store) TPSS has some kind of contract with XFINITY. They ask a couple of questions (not even your name or account number, nothing to worry you), you sign a couple of papers, you get receipts and proof of return, and they box and ship it back at no charge to you. This is just crazy fast and convenient, and a there are a WHOLE lot more UPS STORE outlets than there are service centers!

If you want to enjoy our faster internet speeds, such as Blast!, a DOCSIS 3.0 or above modem is required. You can rent one of our DOCSIS 3.0 Xfinity xFi Gateways, or you can buy an approved modem at a retail outlet near you. If you own your equipment, be sure to check My Device Info to find out if your equipment is compatible with your internet speed.

That said, if you are about to move soon, renting for a couple of months might make more sense instead of buying. As the modem you buy might not work in your next location. Also, if you rent a modem, Comcast offers tech support and free replacements.

Super informative article! I have a 1400 square foot townhome. Cutting cable and going to buy either modem router combo, or separate devices. Have Xfinity. All we do is watch/stream TV, and have 2 cell phones, and one tablet. Not gamers, nothing special. What is your recommendation for Xfinity internet plan/speed?Thank you!

Thank you very much Andreas for sharing your knowledge. After little research I found only very good reviews about MB8611. I got a MB8611, speed is indeed faster about 20mbps than with my old modem. It also helped to make up my mind faster. )Thank you.

The drawback to buying your equipment is the overall expense. If your modem, router, or gateway fails, the replacement comes out of your wallet. The burden of cost is also yours when you want to upgrade. Free technical support from your internet provider may or may not be available.

If you have a fiber-to-the-curb setup, you need a cable modem or a DSL modem, depending on the connection entering your home. You can ask your internet provider more about what type of fiber connection you have.

My advice with Xfinity is to either use your own equipment to drop the fee, or opt for the xFi Pods. The middle ground of leasing an expensive low-grade modem/router for $15 per month is simply a bad value.

While the cost is high relative to other cable providers, it does provide a better user experience for non-technical customers. The xFi app interface for managing the home network with Xfinity is much cleaner than that provided by stock or third-party modems and routers, which are generally made with little attention on the software side.

After comparing compatibility, user satisfaction, DOCSIS technology, and max wired connection speeds, we recommend the Motorola MB7621 as the best cable modem for most Comcast Xfinity plans.

Channel bonding tells you how many channels a modem has for downloading and uploading data. Think of it like lanes on a highway: The more lanes, or channels, that you have, the more traffic, or data, that can get through.

The Motorola MB7621 is an Xfinity-certified cable modem that comes with wired internet connection speeds of up to 1,000 Mbps.1 That covers pretty much every single Xfinity internet plan (aside from its extremely limited 2,000 Mbps plan).

For anyone looking for the latest DOCSIS 3.1 technology and the ludicrous speeds it brings, the ARRIS SURFboard SB8200 and NETGEAR Nighthawk CM2050V are top-rated contenders. And those looking to replace the Xfinity xFi Gateway without having to buy a router as well should consider the NETGEAR Nighthawk C7000 modem and router combo.

No, it's not. While Verizon FiOS uses Miltimedia over Coax Alliance (MoCA) technology, Xfinity's modem technology is Data Over Cable Service Interface Specification (DOCSIS). And because MoCA uses existing internet cables in people's home, MoCA modems won't be compatible with existing DOCSIS cable connections. 041b061a72


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