Xfinity Community Forum

Upload speed upgrade with Arris SurfBoard S33

Hi, My Xfinity account says my service is eligible for 100Mbps upload speed. I am having my own Arris SurfBoard S33 cable modem, which is also listed as a compatible device on Xfinity page. But I am only getting 20Mbps upload speed. Rebooting the modem didn't help, either. How

U

nah thanks for confirming the issue. appreciate the positive forward looking attitude.

Upload speed upgrade with Arris SurfBoard S33

Hi, My Xfinity account says my service is eligible for 100Mbps upload speed. I am having my own Arris SurfBoard S33 cable modem, which is also listed as a compatible device on Xfinity page. But I am only getting 20Mbps upload speed. Rebooting the modem didn't help, either. How

U

See on ARRIS official website: https://www.surfboard.com/products/wi-fi-cable-modems/g54/ 32 downstream x 8 upstream DOCSIS 3.0 channels or 2 downstream x 2 upstream OFDM DOCSIS 3.1 channels https://www.surfboard.com/products/cable-modems/s33/ 3

Upload speed upgrade with Arris SurfBoard S33

Hi, My Xfinity account says my service is eligible for 100Mbps upload speed. I am having my own Arris SurfBoard S33 cable modem, which is also listed as a compatible device on Xfinity page. But I am only getting 20Mbps upload speed. Rebooting the modem didn't help, either. How

U

Thanks for adding context. I did look into the compatible device list: https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2023.11.22%20Full%20List%20of%20Compatible%20Devices.pdf What's not clear to me is that the `Wired U

Upload speed upgrade with Arris SurfBoard S33

Hi, My Xfinity account says my service is eligible for 100Mbps upload speed. I am having my own Arris SurfBoard S33 cable modem, which is also listed as a compatible device on Xfinity page. But I am only getting 20Mbps upload speed. Rebooting the modem didn't help, either. How

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Upload speed upgrade with Arris SurfBoard S33

Hi, My Xfinity account says my service is eligible for 100Mbps upload speed. I am having my own Arris SurfBoard S33 cable modem, which is also listed as a compatible device on Xfinity page. But I am only getting 20Mbps upload speed. Rebooting the modem didn't help, either. How

U

Having same issue. Comcast keep sending me marketing email asking me to buy a new DOSCIS 3.1 modem while my current S33 is already on 3.1. Yet I'm only getting 10Mbps upload speed. Checked signal level for the modem and it's in spec: