Modems

I purchased two SURFboard S33 (sku 1001358) on July 12th and I would like to return one of the modems. How can I begin the return process? My order number is 59908

Modem is activated but won’t provide internet to router or PC. 

My laptop is showing no Internet connection even though all my other devices are on line. My Internet provider tested all the equipment and says they are working properly. They suggested that my modem probably needs a wifi driver update. What should I do?

I am looking for a cable modem supporting EuroDocsis 3.1 , min 1 Lan port and preferably (but not required) 1 fon port. It should not have an integrated router. Are there modems like that here? I am just unsure if “Docsis 3.1 ……… Supporting all major Cable Providers” means globally or US only.

This is an ARRIS Surfboard S33 DOCSIS 3.1 I purchased about a year ago. It is under warranty still. The pitch makes it impossible to work in the room. I am requesting a replacement. Thanks.

I just got the Arris Surfboard sb 6190 and now it's not working with my Linksys e5400 wireless router. I have a Google pixel 8, and it keeps saying that I need to sign in to the wireless network, but from there it takes me to spectrum for activation even though I thought it was done through the app.  I can see I'm getting Internet thru the modem, but nothing thru the wireless router.  Any help appreciated.  Thanks all!!

I purchased a new modem from you and I need the network name and the password

I bought a new SB8200 upgrading from an SB6183. When I connect to the same location with the same coax cable as the old modem, the receive.led is green steady, but the send led is green flashing. Per the manual, it means the modem is scanning for an upstream (send) channel connection. I have talked to Xfinity and they cannot remote troubleshoot because the modem appears offline. When I put back the SB6183 I get steady green receive and send leds that then turn up Internet in 5-15 seconds. So my problem is the flashing send led for 5-10 minutes without syncing. Has anybody else faced this problem with SB8200. Thanks.  

After recycling powered to my SB8200, the blue receive light is always on. Thankfully my internet works fine and signal is getting from the modem to the router and the speed checks are normal.  Xfinity is my service provider with the 900mbps plan and there are not outages updates or issues for me or my area. I have tried recycling power and have also done a factory reset. Still no change. 

How do I test Ethernet ports?

Last September my old modem stopped working so I purchased a Arris SB8200. For the last few months we have experienced numerous dropped connections. It is now being dropped even a few times a day.At first the lower earth symbol would start blinking. Now it stays on like it should but is getting almost to hot to touch. I did a search for cause and this model was the first thing to pop up. Overheating was a large issue.We purchased the modem from Best Buy on 09-22-23. According to this web site there is a two year limited warranty.What can be done to get this modem replaced or fixed?We look forward to hearing back.ThanksRob Garrison 

when I log in to the router, I get this message.The version of Chrome you are using is unsupported. Your Gateway's web interface has been tested to work with the minimum version: 70.0.3538.110.I’m using the newest version of Chrome.Chrome is up to dateVersion 126.0.6478.183 (Official Build) (64-bit)I don't understand the problem is, why is the newest version is not supported. 

Recently found out that Arris S34 is getting released and it will be supported for the Next Gen Upload Speeds (100 MBps/ 200 MBps). Source.Arris S34 is now listed on Amazon for pre-order.But, both Arris S34 and Arris SB8200 use the same chipset BCM3390 (source: the listing page on Amazon for each modem). Can anyone explain why one is supported and the other isn't? Technically, the firmware shouldn't be an issue at this pt. I am genuinely curious.

I bouight my S33v2 11/1/2024 on Amazon. In my previous house my xfinity connection seemed to be getting worse over time, and after moving into my new house (6/17/2024) I can barely hold a connection. My modem is connected to an OpnSense router, so I have graphs of packet loss on WAN and they are up to 100% loss on a daily basis.Xfinity techs have been out twice, first to lay a new cable to house, then to replace all internal house wiring to the modem. The signal is great, I thought it would be fixed when they were here yesterday, but packet loss is worse than ever. I even replaced the cat6 cable between modem and router.How do we get an S33v2 replaced under warranty?

Hi,I’ve read the thread with similar title and tried password as well as last 8 digits of S/N, “password” and last 8 digits, caps on Admin and Password and nothing allows me to login.  Just picked up the unit today.  It’s a v2 version if that helps. Thanks!

I’m trying to get support but the model (P/N) on the bottom of the model isn’t recognized in support system.  Serial# field grayed out.

Get error This site can’t provide a secure connection192.168.0.1 uses an unsupported protocol.ERR_SSL_VERSION_OR_CIPHER_MISMATCH

My modem won't turn on

Recently the light at the bottom of the box has been lighten up red. I was trying to see how can we make it go back blue or green?

Is there a max number of devices that can be connected to the router

How do I setup just for use of Wi-Fi without cable?

Hello, I recently got an SB8200 and a Flint 2 router to replace my Xfi gateway. The setup went well and I followed the manual and activated the modem with Xfinity. I went to go run a speed test and the download was 700 mbps, but upload was only 5.9 mbps at most (I have a 500/100 plan). It would never exceed 5.9 mbps, besides when I first run the test, it goes to around 7 but then rapidly drops back to 5.9 mbps. I’ve spent the entire day trying to fix this and I’m completely out of ideas. I tried contacting Xfinity support to see if they are limiting it somehow but their support was just trying to sell me their products for 40 minutes straight. I contacted Arris support and they told me to try to reprovision my modem, which I did, but it didn’t make a difference in my upload speeds. I’m completely out of ideas and I would really appreciate any help or any ideas, thanks in advance.

I'm following the instructions to setup an SB8200 modem, but can't connect to the Internet. The Xfinity app has successfully connected to the modem and says it's providing Internet, but when the Internet light on the modem isn't on. When resetting, the lights turn green as they cycle through, but as soon as it finishes the Internet stage, they turn off and only the Receiving light stays on (but turns blue). Why isn't the modem connecting to the Internet?

Hey all, my ISP had a several day outage after Hurricane Beryl impacted Texas. My ISP swears there is not an outage in my area anymore but my modem, despite several reboots/power cycles etc will not move past the blinking download light stage of initialization. As far as I can tell there is no issue with the coax connection into the house (but may be?) or with the coax connection to the little ground node thing.  I have a service appointment set up for the end of the week (I won’t be home so the internet being out for a few days while annoying isn’t the end of the world) but my urge to fix things has me trying to figure this out.  could my modem be shot?

My router/modem is not powering on. I'm not getting any lights at all.