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Gigabit x2 Upload Speed Issue
I just updated my plan to gigabit x2 from gigabit. My download speeds increased from 1400 to 2200 but my upload speed has not moved. It has stayed at 40mb. I am currently using a Netgear Nighthawk CAX80 6.0gbps router. My issue seems similar to this one https://forums.xfinity.com/conversations/your-home-network/gigabit-x2-upload-speed-issues/65a4115020d30143e1b33c11
What can I do to increase my upload speeds?
BruceW
Gold Problem Solver
•
25.9K Messages
11 hours ago
The CAX80 is not compatible with the new higher upload speeds. Only a few retail devices are. See the "Next Gen" list at the top of the "All Compatible Devices" link near the bottom of https://www.xfinity.com/support/devices (at the moment it points to https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2024.09.18%20Full%20List%20of%20Compatible%20Devices.pdf, but this changes from time to time).
Also see:
For faster upload you need one of Comcast's newer rental gateways (XB6, XB7, XB8) or one of the few retail devices shown in the "Next Gen Speed Tier" group with an upload speed rating in the "All Compatible Devices" PDF:
The Reddit link lists the approved devices (although that list is out of date) as well as other requirements for faster upload speeds.
Realize that although Comcast calls some devices "Compatible" and some "Recommended", for all but a few devices those designations only mean "compatible/recommended for use with their Internet service", and not necessarily approved for the new upload speeds.
Comcast could make all of this much simpler and clearer, but they have chosen not to do so.
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