This what I saw in comcast website. How do I make sure this modem is sold by a valid seller
810834
Do not buy this device online, as it can only be obtained via Comcast. They seem to have been stolen and are being sold online. http://mydeviceinfo.comcast.net/device.php?devid=357
1016726
Make sure you purchased it from a trusted reseller. There are fake ones around.
1543214
It says no online, ask the seller to be 100% sure. Look up DSL modems, if he says no.
1748209
I'm a comcast subscriber and it works fine. You will just need to call them with the numbers on the modem to have them register it.
692755
The first one did, the 2700 that is. It had the cd, ethernet cord and original box. Then I had issues and contacted tech support who could not resolve problem. then I put in for return, money was refunded and they sent me 3500 which came in brown box and my money back. Again I had connectivity problem which i believe is from comcast and or compatibility problems with my sb2161 modem. Anyhow the company refunded my money and I have 2 free modems. I hope you don't have comcast as for the seller, they were excellent.
1254158
If it wasn't for Comcast you would be able to, but since it is Comcast does not register any refurbished/pre-owned products. Best buy sells the Comcast issued VOiP modems if you need it and they are going to stop doing that because they want you to purchase directly from them.
2124157
i do believe you should note who is the seller.. if it's amazon, you should have no problems.. if it's some other sellers and the price is too good to be true.. then you might want to worry
1280908
No, this modem is compatible with the Comcast system, you should not have to call them to set-up modem.
779046
I ordered it and was told by the people at comcast that it could not be activated. I ended up buying one at walmart that had comcast all over the outside of the box for $109
2086856
Go to your Comcast system's website. Find the Q&A; section and look for something like, "Can I use my own modem." If they are like Brighthouse (my provider) they will list all the compatibled modems. Pay special attention to the throughput rate - you must match the modem to your particular rate.
1002760
I know the description says for Comcast only, but I purchased this modem in January of 2012 and plugged it in to Charter Cable and it has been rock-solid ever since. I probably should add the caveat that my subscription is for the 60MB speed level, so it's possible that this modem won't work properly with higher speed packages. I believe that the Comcast-only declaration is because this modem doesn't appear in the "approved modems" list for the other ISP's, but that's just my guess.
808910
Hi Dave, I have had an Arris Tm722 modem for about a month now. My model, used by Comcast, has two standard phone jacks in the back. This is an upgraded model over the 502 you currently rent. It can handle faster speeds. There is also an 822 TM. That might be the newest one that Comcast approves. The Arris TM 722 will work fine. You don't even have to buy a brand new one unless you want to. I bought a used one with a 30 day warranty with a brand new battery. It works great. There is no need to keep paying Comcast a monthly rental fee. That is exactly why I also purchased one. Hope this helps, Bob
756630
Here is what I found out having just bought one (10/30/14). I was able to go on-line to Comcast after connecting the modem to the cable and a network cable directly to a notebook computer.The modem provisioned without any issues.The phone service work fine to.Here is the hitch...While there are no problems with the modem and it shows up on Comcast's OK modem list I found out the modem is still undergoing testing and not fully supported yet. This means you should be able to get standard internet speeds but if you have the higher speed blast service it will only transfer at standard speeds. They told me this should be fixed within a month... we will see ;) Here is what I found out having just bought one (10/30/14). I was able to go on-line to Comcast after connecting the modem to the cable and a network cable directly to a notebook computer.The modem provisioned without any issues.The phone service work fine to.Here is the hitch...While there are no problems with the modem and it shows up on Comcast's OK modem list I found out the modem is still undergoing testing and not fully supported yet. This means you should be able to get standard internet speeds but if you have the higher speed blast service it will only... » Read More Here is what I found out having just bought one (10/30/14). I was able to go on-line to Comcast after connecting the modem to the cable and a network cable directly to a notebook computer.The modem provisioned without any issues.The phone service work fine to.Here is the hitch...While there are no problems with the modem and it shows up on Comcast's OK modem list I found out the modem is still undergoing testing and not fully supported yet. This means you should be able to get standard internet speeds but if you have the higher speed blast service it will only transfer at standard speeds. They told me this should be fixed within a month... we will see ;) « Show Less
1383107
There is a very long review, dated October 18th, 2012 that explains it all. Try the auto install first. In my case it found a modem, but the wrong one. Look very carefully. If this is the wrong one, don't go any farther. Just call Xfinity and they will walk you through it. Make sure to tell them you want to port your number to the new modem. Although it was a process, it was worth it. Also make sure to call xfinity again after you have returned the modem to a service center. They have to be told to take the $7.00 monthly lease charge off your bill. I'm assuming you have comcast/xfinity.
1398982
Not true. Comcast installed mine. It was a replacement for one of theirs. I ordered the exact modem that Comcast had sipplied.
1992042
If you call them they will happily tell you which modems you can purchase that are compatible with their system. Also, be careful if you buy a second hand modem online, they are often equipment that belongs to the cable company (Comcast, Cox, Time Warner) but were never returned (by deadbeat customer who left unpaid bills and pawned the equipment), they have a record of those serial numbers and they cannot be used for another account.
1398979
Not true.....I bought mine through Amazon.com and they were a better price than Best Buy. They back up their warranty as well. I also have Comcast and it fits nicely and I have not had any problems. Love this modem.