ZyXELBRG35503 Cable Modem Compatible with Comcast Network

Unfortunately, Comcast nailed down the User Interface, so I can only view the most basic settings. But after Comcast fixed their multiple setup mistakes (unrelated to this item), it was easy for them to set up and has worked fantastic and has been very reliable. I give 4 stars instead of 5 based on my educated guess that the UI is probably lacking (based on UI of my new ZyXEL modem and other reviewers' remarks about the BRG35503 UI, since I have no access to most of the BRG35503 UI).I have the LAN port connected to my custom Linux firewall, and it syncs up with DHCP and forwards traffic at 35.5/4.1 (down/up) no problem. I trust the specs, which say that it can handle much higher bandwidths.I think that a dedicated, simple modem like this, with a separate dedicated WAP, usually is more reliable and extensible than a more expensive all-in-one unit. With this unit, you could upgrade your WAP to 802.11ac in a year or two, without effecting your Internet connectivity and without wasting your investment in bundled (and generally inferior) modem WAP.

I was having issues with my 3 1/2 year old Zoom modem cutting out and losing connection, despite nearly constant resetting. Decided try the ZyXEL because the the reviews were pretty good.The ZyXEL did not auto-connect so I telephoned Comcast for connection. It took about 15 minutes from the time I plugged in the modem until Comcast had me connected for service. This was the easiest modem install I have ever worked on. Comcast was able to connect on the first try. The old Zoom took 3 reboots and troubleshooting before Comcast was able to get a signal.I waited until I had an internet connection with the new modem before I hooked up the router, so that I could troubleshoot in case of a modem problem with the initial install. My Netgear N750 and the ZyXEL communicated immediately and I had WIFI in 5 additional minutes.Just to test things, I had family members use the Internet on 2 Samsung phones, an iPhone and Toshiba laptop simultaneously, while watching Netflix. No problems and the modem remained rock solid.It is a good little modem and is doing well with Comcast in Indianapolis. I will update if needed.

Works perfect as a replacement to the Comcast modem they were charging me for.I had to do nothing other than take it out of the box, plug it into my wall jack and call Comcast customer service.They asked me for the specifics of my account, and then had me read the MAC address number off of the modem. They told me to wait about an hour and it will come online. If it doesn't work in an hour I should call back. I then plugged my wireless router into the modem and turned on my computer and opened the internet browser. It said I had not internet connection.Within 20 minutes the modem lights flashed and it rebooted. When it came back online I pushed "refresh" on my internet browser and I was good to go. It wasn't hard at all. I ran a speed test it was just as fast as the one Comcast gave me.

I purchased this in order to keep Comcast from robbing me blind with their monthly modem least fee. I am beyond elated with the savings I continue to accumulate monthly. This is a purchase that has already paid for itself and keeps on giving me a little extra savings each and every month. Purchasing my own computer modem I think in a sense is my way of "sticking it to the man" (lol) by refusing to pay almost $8 a month to lease their used modem. Now, that's just crazy. I highly recommend this absolutely wonderful modem. No problems whatsoever to report here.

This modem was the least expensive option for use with Comcast service. So far is working well and connecting to Comcast was not difficult. Interesting, the internet speed did not change switching from Docsis 2 to Docsis 3 modem and is much slower than the advertised speed for Comcast Blast. Comcast sent us many notices that we should upgrade our cable modem to take advantage of the higher speed with a Docsis 3 modem but then there is not any higher speed, likely due to Comcast transmission limitations. Probably we should have continued to use the Docsis 2 modem until Comcast made it unusable. Unfortunately, there is no alternative to Comcast in our area since our local government in Frederick Maryland have granted them a monopoly for cable service in our county.