cablepdx's profile

Regular Visitor

 • 

10 Messages

Thursday, April 17th, 2025 1:54 AM

Closed

Recently upgraded cable modem to an Arris S34. Only getting 40mbps upload speeds when plan should allow for up to 150mbps.

Hi,

I recently upgraded my modem to a 3.1 DOCSIS Arris S34, one of the recommended cable modems.  It activated just fine.

However, my internet plan is FAST, with downloads up to 600 mbps and uploads up to 150 mbps.  The downloads are doing well, but the upload speeds are not.  They are stuck at ~40 mbps.  What should I do to up those numbers?  Is there a way to confirm the modem configuration file is up to date?

Accepted Solution

Regular Visitor

 • 

10 Messages

9 days ago

Thanks everyone for your attention.  After a provisioning signal was sent, it's looking great!

Official Employee

 • 

1.3K Messages

@cablepdx, We want to thank you for reaching out on the Community Forum for support with your Internet upload speed problem. We are glad we were able to resolve your issue, and get you provisioned with the proper speed service. Never hesitate to create another public post for any of your future account and service needs!

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

Expert

 • 

110K Messages

10 days ago

I'm going to escalate your issue to the Comcast corporate employees (The Digital Care Team) who are available to these boards. They will be able to check the modem's speed provisioning for you. You should get a reply here in your topic. Good luck !

Official Employee

 • 

2K Messages

10 days ago

@cablepdx Hello! Thank you for reaching out to us here on our Community Forum. We'll be happy to look into the issues you're having with your connectivity. 

We also see your DM, in the future, please wait to be invited before sending a Direct Message as it is against our Forums Guidelines to send an Unsolicited Direct Message to an Official Xfinity Employee. 

We will reply to your DM shortly but please remember to follow the process going forward.

Expert

 • 

110K Messages

10 days ago

@cablepdx @XfinityBenjaminM 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

Expert

 • 

110K Messages

9 days ago

@cablepdx 

Thank you for circling back here with the update. Glad you got it squared away ! I marked your topic as being solved and am now closing it to further replies. Be well !

forum icon

New to the Community?

Start Here