Modem XB8 can't provide 2 GB internet speed

We upgraded our internet plan to 2GB and got the newest modem XB8, and so far, we could not get what we paid for (we tested the internet speed, only can get 900+ Mbs). The Xfinity technician came today, he test the coming in signal (directly connect the coax cable to his device), and get 2500 Mbs, but once he connected his testing equipment with his ethernet cable (he said it is CAT 5e) or our cable ( CAT 6), he can only get no more than 1 GB speed. Also, he replaced our modem with one he brought in, same result.

So can anyone solve our problem?

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BruceW

Gold Problem Solver

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26.3K Messages

2 months ago

... XB8 ... internet speed, only can get 900+ Mbs ...

Are you using the 2.5 Gb port (red dot or stripe)? On the XB8 the other three ports are only 1 Gb and will only run at 940 Mb or so.

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user_752e0r

2 Messages

@BruceW Hi, thank you for your advice. We did not use the 2.5 Gb port before, even the technician from Xfinity did not know this. Now we have 2 Gb.

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2 months ago

XfinityMartyR

Official Employee

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2K Messages

user_752e0r Thanks for the update, I'm glad @BruceW was able to help!

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2 months ago

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user_752e0r

Modem XB8 can't provide 2 GB internet speed

BruceW

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user_752e0r

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