![Arris CM820A (Comcast Version) DOCSIS 3.0 Cable Modem [Bulk Packaing]](https://m.media-amazon.com/images/I/71mQPYSaE7L._AC_SS450_.jpg)
This is an Excellent Modem.
Be warned, however, Comcast will NOT want you to use this modem, and may give you fits once you install it. They dropped my speed (which was supposed to have been 50, but Concast gave me some bs about the splitter that we have to use cutting the signal in half, which I bought because it seemed logical) from 35 Mbps down to 6 Mbps. Then, they started cutting the signal out up to 20 time A DAY! When I had the 1st tech come out, he did all he could, got no improvement, BUT the tech that he called on the phone said that there they were experiencing outages in the area. (Which did not make since, since I still had a picture on the TV, but what can you do?) He said he couldn't do anything else, and would have to come back again. He scheduled an appointment, but never came back.
After about a week of waiting, I was furious and called again, requesting another tech agent come out. He did and did everything the 1st guy did, with the same uneventful results. I finally capitulated, desperate for a constant signal at the appropriate bandwidth, and agreed to have him install their New super-duper Concast Modem+Router, though it was going to cost me a monthly fee. Well, surprise! It gave me the same 6 Mbps signal! LOL So I said, "Forget it, just install mine again." They did, and IMMEDIATELY AFTER they Re-Installed mine, I got 50 Mbps! (Undoubtedly, it finally went though their system that they had installed their own Concast Modem+Router, just a minute after it had been uninstalled!) Then, it dropped back down too 5 Mbps!!!!!!
I talked to the tech, and he was flabbergasted that I has the 50 Mbps screenshot to show him, and the current 5 Mbps speed to compare it to. He called the problem "systemic" - meaning there was nothing he could do, and basically confessed that it had to do with the person he called on the other end of the line, who AGAIN claimed that there was an outage in the area (because that is Concast's default excuse). He also said that he had installed plenty of splitters and a single splitter would not cut my internet speed in half. So, he left.
Then I called Concast again, late that Saturday, and I was Irate. I told them that I knew what they were doing, that there was NO REASON my speed should go up to 50 then drop down inexplicably to 5 other than the fact that THEY were the cause of the problem. I asked to make certain that the call was recorded. I demanded that it be played for a supervisor. And I threatened a class-action lawsuit if they did not fix it. Oh! And I also requested that another tech come out and Re-Install their New super-duper Concast Modem+Router. (I did not say so, but I planned to get the next installation on camera.) Then, after the call, I took the survey that they'd asked me to take, and I trashed their customer service and said that I would not recommend them. When they asked why, I recorded a very irate message for them.
Interestingly, the tech that I requested to come out and install the New super-duper Concast Modem+Router never came. However, my speed did jump up to the Blast speed of 75 Mbps (which is what it is now supposed to be), and it has remained there with little to no interruption.
| Brand | ARRIS |
|---|---|
| Series | FBA_P-10-20521 |
| Item model number | FBA_P-10-20521 |
| Item Weight | 0.01 ounces |
| Product Dimensions | 7 x 7 x 2 inches |
| Item Dimensions LxWxH | 7 x 7 x 2 inches |
| Color | Black |
| Manufacturer | ARRIS |
| ASIN | B008GG78FU |
| Is Discontinued By Manufacturer | No |
| Date First Available | June 30, 2012 |
