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Upload speed is slow

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New Poster

Upload speed is slow

I swapped out my Gigabit modem ($15/month) for a Motorola 7621 I bought on Amazon, the download speed is about the same (greater than 600mbps) but the upload speed went from 40mbps to 5mbps. I tried a second modem Netgear CM500 and get very simiarl results, no improvement - still about only 5Mbps upload. I'm still subscribed to the gigabit plan. Any idea how to get back to 40Mbps upload without renting a modem from Xi]finify??

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Diamond Problem Solver

Re: Upload speed is slow

Use a gigabit modem, neither of your examples are compatible with gig service, so you won’t see the proper speeds. Up or down

I am a Retired Official Comcast Employee
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Gold Problem Solver

Re: Upload speed is slow


@mjdeluca330 wrote: ... how to get back to 40Mbps upload without renting a modem from Xi]finify??

Pick a retail device approved for Gigabit service from https://www.xfinity.com/support/devices/.