U

Visitor

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7 Messages

Monday, June 23rd, 2025 8:09 PM

cm mac number couldn't be identified

New modem and the app says the CM MAC number couldn't be identified.

Problem Solver

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712 Messages

22 days ago

Is the new modem from xfinity or third party? 

Visitor

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7 Messages

22 days ago

Got it connected after working with support via the xfinity app chat feature. They did something for about 15-20min and it started working.

Only issue now is really slow uplink speed (~5-6Mbps)

Official Employee

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909 Messages

@user_nrqes5  Thanks for posting and following up with the resolution. Glad to hear our support teams were able to help. What speeds do you get with a laptop connected directly to the modem, using this http://speedtest.xfinity.com/ page? 

I am an Official Xfinity Employee.
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Visitor

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7 Messages

That speed is when directly connected to the modem. Also tried multiple computers and get the same slow uplink speed.

Official Employee

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2.1K Messages

Hi there, @user_nrqes5 ! Thank you so much for reaching your Digital Care team. I appreciate your patience while you waited to connect with me. I'm sorry to hear about your slow upload speed. Please be assured you reached the right person to assist you. Can you please DM me your first and last name, along with your full service address so that I can assist you further.-Richard

 

Please send a private message by clicking the direct messaging chat icon in the upper right corner of the page, click on the pen and paper icon, then enter “Xfinity Support” in the “To” section. 

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
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