ARRIS - SURFboard DOCSIS 3.1 Cable Modem for Xfinity Internet & Voice - Black

Ever since it was installed, there was a big difference in speed over my old router. It has been very solid performer with my Comcast Extreme Pro speed (600 Mbps).

Just to save you the time that I wasted over the weekend. If you install this modem AND you have Xfinitiy's 1Gb Xfi Advantage -- that's the high-speed plan that includes unlimited data -- Comcast will remove the unlimited data feature from your account (plan details here: https://www.xfinity.com/support/articles/xfi-advantage-faqs). So, yes, you'll still have 1Gb speed, but you will be paying for data in excess of 1Tb each month. If that works for you, then go for it. My family exceeds that each month, so any savings I might have gotten by having my own modem would have been canceled out (and then some). Unfortunately, I didn't learn this until I went through the installation process, called Comcast support twice, waited on hold and finally spoke with a helpful rep who told me the bad news.

We have been paying the monthly equipment rental for xfinity modem for YEARS!!! We were constantly having to go in and swap with a different one every 6 or months, with issues starting after about a month or so. They just wouldn’t stay connected. Last straw was the new xf1 that was supposed to be the best ever. Replaced after 3 days and then never had a full connectivity day after that. Had enough so we got this one and haven’t had one issue since!!!! So glad to have made this purchase!! Curbside pickup has it ready within 5 min

So after reading and doing some research, stumbled upon this beastly device. The problem is that I couldn't actually use this thing. Reason being, not compatible with Spectrum. Found out the hard way by calling them up to activate the modem. Long story short, not on their list of approval for 1Gig or any of their internet plans, but the 8300 model is though?! Sucks due to the fact that this model has pretty much everything needed to get started on the spectrum internet( Lans,Tele Ports). Gave it a 5 star so those that have Spectrum or is thinking of switching/getting Spectrum know the answer

Omar Galindo (Geek Squad) is excellent; he's very knowledgeable, fast, explains and reexplains, well mannered, and very professional, returns calls promptly, tries and solves problems for us; he's set up a new computer, modem, and fixed the router; we're very grateful; and we highly recommend Omar and Best Buy, and Total Tech Insurance. Thank you, Elvia Araneta And Jodi Houtz 9/12/21

I totally agree, paying over $200 ($224) up front is alot but 10Gb future plans from it is a great deal. Almost went with Netgear CM1150V myself to try something different from Arris but again, at 2Gb. Not worth it while we get added stuff around Tech reaching nearing 48Gb 8K-10K hdmi cables. If there is really a notice difference from those besides if there's any market propaganda in there. The problem at the current moment at this time, No Router I've seen has contain 2GB Nic's built in except maybe a few Netgears Gaming router only having 1 at 10Gb Nics while the rest having 1Gb Nics (total of 6 nics maybe). 1Gb Nics been around since routers like Apple Extreme 5 Gen (current Apple Extreme 6 Gen Discontinued) - 6Gen Still contains 1Gb Nics. Which leads me to the other problem that I have notice on this products Aris T25 description. Says 10Gb's but with 2 -1Gb Nics. Now lets think about this clearly, How can it run at 10Gbps on this modem with 1Gb Nics? How can you distribute amazing 10Gbps on the coxial cable onto 1Gb Nics? And they say they support up to 2Gbps since ISP's are still rolling out 1-2GB plans to people around the country. Has anyone tested the Nic themselves from one pc to the other with a NIC card contain 10Gb to see if they really truly in fact have 10Gb speeds?? That's the real question there. Has anyone tried hooking 2 pc's together using this T25 Modem 2 Nics only without hooking to comcast yet with 10GB Nic cards added to there PCI slots to actually test that theory yet? What would the results be? And would it be the same after being hooked to comcast after unpluging the coxial cable? And the other problem with this modem is, what's the password under advance? Whats so secret that needs a Password Protected? Met to look further before I had set it up with Comcast and now its to late, Perhaps someone could let me know and post a screen shot for me and others to see bc there pdf file from arris doesn't mention about this section of this modem at all. If its for ISP, then what pre-tail is it? Private concerns. Phones aspects? Some say I'm just being paranoid and not worry about it or some kind of conspiracy or bad Advertising? But this is my honest Review for this product, Its how you take the information in. The Good, The Bad and the Ugly. (Ba-Dum-Ts) or is it? idk. idc. I hooked it up and was ready 5-10mins for checking speed plan. May take 20-30mins to really see the speed difference as it catches up. The Display page is very basic compared with other Arris modems of the past. Overall, 4 Stars. Probably really should give it 3 Stars. After typing all this down. or will this be review removed? Q. when will there be a Linux Rapsberry Pi type device with a coaxial for being the modem? haha, keep dreaming, LOL

Very pleased with this purchase. Setup was quite easy and the speed achieved was better than it had been with the Comcast rental unit. Also, this was one of the few WiFi modems which had an output for VOIP. Note that this is a standalone modem and requires a separate router for internet functionality.

I like the modem as a whole but I didn't read the ad well. My last modem had a built in Wifi so I had to go back and get three pods. I now have my internet phone hooked up through this modem and I can get rid of my old land line that gave me 100 spam calls to 4 real calls a month.