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S33 | S34

DOCSIS® 3.1 Gigabit Cable Modem

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  • 993 Replies
386 Topics
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Alex1954The Many
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Trying to activate my modem

Trying to activate my modem

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petrica-usaThe Many
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Arris Surfboard S34 - Unable to access GUI portal and ethernet light is blinking

I just purchased this Arris Surfboard S34 modem from Amazon on September 28, 2024.  Before I connected the modem to the router, I logged into the modem using 192.168.0.1. Once in, I setup my username and password. After COX activated my modem, I connected my PC to the modem using the 2.5 Gbps Ethernet port.  Once my PC was connected to the Internet I can browse any website without any problems. However, there are two issues: 1 - the LED light on the 2.5 Gbps Ethernet port is blinking constantly, and the color is yellow.  2 - I tried to ping the modem using 192.168.0.1. The ping replies with: Request timed out.  Also, if I type the same IP address in any browser, I can’t access the modem. The message: This site can’t be reached.  Please advise.  Thank you.

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Wi-Fi Warriors
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MomAThe Many
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S33 not working, loud noise, orange light

S33 not working at all, done everything. Has a high pitched noise with solid orange light. Still under warranty but phone and chat support are not available when I check, what do I do? Thanks

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Wi-Fi Warriors
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Jonathan.steinThe Many
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arris s34 network name and password

I am setting up my new modem and the instructions refer me to the label on the modem for the network name and modem, but there is no label that contains this information.   What is the default network name and password for my new s34 modem?

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Wi-Fi Warriors
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xfinityuserThe Many
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S33 - Xfinity tells me it's registered to another customer?

So I purchased an S33, brand new, from BestBuy on Saturday.  I was not able to activate the modem with the xfinity app so they put me into contact with one of the CS representatives via text chat.  After a long period of time they came back and said the modem could not be activated on the network because it was registered to somebody else, and advised that I contact the manufacturer. Here’s the funny part.  Last week I purchased a different modem, from a different manufacturer, and from a different retailer.  When trying to activate it I got virtually the same story - I was told it was a refurbished unit (that’s not what I purchased) and it was currently registered to somebody else. What are the odds of this happening twice? Pretty far out there I’d guess.  Is someone out there spoofing MAC addresses?  Does xFinity really not want me to own my own modem?  They’ve been of absolutely no help.  Is there somebody here that can help me?  I was trying to access the live chat, which is suppos

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RmeyergThe Many
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S33 Internet provider says there is a problem with the modem warranties still good for another year

Is there any updates and where can you find them for The S33 modem

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egoldstoneThe Many
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Arris S33 - Won't lock to Optimum--Stumped...

Our Arris S33 has worked like a champ for nearly 2 years.  Then, one evening two weeks ago, the modem suddenly dropped its connection to our ISP, Optimum.  There was no general service outage, and neither rebooting; repowering, nor factory resetting the modem helped--it remained unable to lock to an upstream channel signal, though it could lock to one downstream channel (channel 28).I next disconnected the modem and tried reconnecting it to the cable at the point where the cable first enters our house--ahead of any other equipment or splits.  Still no joy…  The S33 gave the same result--no ability to lock to an upstream channel.I then contacted Optimum support, and they could not remotely communicate with the modem either, which convinced me that either there was a problem in the signal somewhere between the road and our house OR that the modem had somehow failed.  An in-home Optimum service call was arranged.The tech who showed up confirmed everything stated above.  He then swapped-in

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rjjThe Many
asked in S33 | S34
S33/S34 2.5G port slow

I have Cox gigablast and was getting 940Mbps speeds with my Motorola MB8600. I’ve “upgraded” to the Arris S33 and S34 and I’m getting weird results with the 2.5G port. Both modem continue to download at 940Mbps when connected to the 1G port. However, when connected to the 2.5G port, I only get between 180-300Mbps. I’ve tried multiple laptops, desktops, and switches with 2.5G ports. I’ve also used Cat6a and Cat 8 cables but the results are all consistent. I would assume I would continue to get 940Mbps when connected to the faster 2.5G port. Also worth noting is that I do not get a link/connection light on any of the modems’ ethernet ports, but the respective activity light flashes green when connected to either port. And of course, I’ve rebooted the modem with and without the ethernet connected to either port. I returned the S33 thinking it was defective and the purchased the S34 which demonstrates the same issue.Is this a firmware issue or does the carrier need to enable the 2.5G port?

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StueyThe Many
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S33 Upstream Power Levels and Gibabit Speed w/Xfinity

Xfinity claims that Upstream Power Levels should be +35 to +50 dBmV. The S33 wants Upstream Power Levels to be +45 to +51 dBmV.A lot of Xfinity customers have +35 to +44.9dBmV Upstream Power Levels and they aren’t getting Gigabit performance.How do we fix this?

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The Certified
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Ayjackie93The Many
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s33 orange and white light and intermittent internet connection with high pitch noise

Internet randomly went out and my S33 modem would do one white blink then turn orange and blink slowly and kept repeating the cycle. I tried a to restart it and even plugged it into a different outlet. Making a squeaky noise as well. Contacted xfinity and they are stating it’s the modem. Any help would be great. Also warranty is for another year. Now it’s just staying the color white.

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jfb820The Many
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Setting up new modem, network and password

I don’t have a computer that can connect to the modem via ethernet and I need to create a new network name and password since the modem is connected to the ISP provider

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WorkableGoblinThe Many
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S33 Modem Not Acquiring Downstream Channel on Sparklight

Greetings,In the past few days my S33 modem, which until now has performed perfectly well, has suddenly stopped connecting to Sparklight’s cable network. After investigating the interface, I learned that it was stuck at “acquiring downstream channel,” and after calling Sparklight learned that it had suddenly dropped off their network and as far as they could tell everything on their end was working fine. I’ve attempted several restarts and two factory resets, which have done nothing, and am not sure what to do next. I wanted to call or chat with Arris technical support, since this modem is in warranty until December 28th 2025, but the live chat option on their support webpage only says that it’s working without any interface for actually connecting to chat (in Firefox, Safari, or Chrome), and the call section doesn’t actually list any phone numbers to call. So I can’t do that, either. Does anyone have any suggestions for further troubleshooting activity or other suggestions for next st

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ben.mThe Many
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S34 not compatible with Cox

I have spoken with two customer support folks from Cox trying to activate the S34. They both have told me it is not on their compatible devices list.  I chatted with a Arris customer service agent who said that it is compatible and to use model “RARS34” but this did not help.  Buyer beware.

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ryolseThe Many
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Surfboard S33v2 solid white light, buzzing with no connection

Our Surfboard S33v2 has a solid white light with buzzing and no connections I've done the following steps:1. Power cycle2. Disconnect the RG6 coax cable3.  Have tried to connect to the GUI web portal when directly connected with a rj45 patch cable.4. Reset button and repeated previous steps  

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TMack68The Many
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How to change the configurations under upstream to mid-split on S33

How do you change the upstream Diplex to mid-split. According to specs it is configurable.

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stuckwithxfinityThe Many
asked in S33 | S34
Modem is hot to touch on S34

I have a new S34 modem that I received from Amazon. I activated it on August 29th and have been using it since then. I had a disconnection just a little while ago (it did come back online right away after a manual restart) and I noticed that the exhaust from the top of the modem feels hot. I measured it with an IR thermometer and it is reading between 120F and 130F (49C to 54C). My room is 75F (24C).Are these temperatures normal for the S34?  

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Wi-Fi Warriors
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vrundarajiv1971The Many
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showing incorrect service provider on S33

I switched my internet provider from Xfinity to Astound and my Arris cable modem S33 still shows Xfinity as my service provider

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PaytrnThe Many
asked in S33 | S34
S33

S33 WILL NOT STAY CONNECTED TO MY SPARKLIGHT SERVICE.  

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RichKThe Many
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User ID & PW No longer work How to Recover for S33 Modem and reset

The User ID & PW I set some years ago for my S33 Modom don't work anymore, so how can I recover and/or reset again from factory? Will this affect my registration with my cable company if I safely reset using reset button? Thanks.

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sersland9The Many
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Wi-Fi name and password for S33

I need a wifi name and password for my arris surfboard s33

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Greg79The Many
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Comparison between S34 and S33

Whats the difference between the S34 and S33? 

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JohnjohnThe Many
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Where to get Arris S33 Root CA ?

When trying to log into the modem using 192.168.100.1 the page never loads. I used to get a warning that it wasn’t safe because the modem uses a self-signed certificate. I can’t even get to that page anymore.Is there a place where I can find the certificate so I can add it to my keychain and trust it?The name of the certificate is “HWROB Device Root CA” “HWROB Device Sub-CA 24”  “0000B4D2471B”The error is "0000B4D2471B" certificate is not standards compliant”

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bsaccoThe Many
asked in S33 | S34
s33 eventually slows to 86mbps when i have 1.2 gig Xfinity service

Like many others on this forum I’m stuck between two service providers who keep pointing the finger at each other (Arris and Xfinity). There is a design flaw somewhere and neither party is willing to address it. I’m tired of being in the middle.  

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inthecup420The Many
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deacivate s 33 modem through arris

How do i deactivate my old modem to give to my mom 

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watsondyThe Many
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Turn off led light status on S33

Is it possible to turn off the lights on the  S33? They are disturbing our sleep. 

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