WiFi extender or Mesh?

Dec 22, 2020
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I need help getting better WiFi signal to my upstairs office. Standing next to the xfinity modem/router, I get over 200 mbps. However, upstairs in the office that is farthest away from the router, I only get 8 mbps. I don't understand whether I need an extender or a mesh system. Can someone help? Thanks
 
Dec 22, 2020
2
0
10
Are you connecting via 2.4Ghz or 5Ghz connection? 2.4Ghz handles walls better than 5Ghz.

An extender could help. You also have the option to use wireline adapters.

I honestly have no idea or even how to check that. I assume it is a dual band router. It was installed about a year ago