Greetings of the day!!!
Thank you for the information you shared.
As the ports are working fine for other network cables, 1/1/4 port is only able to transmit 100 Mbps of speed (please refer to the below screenshot) which is a result of a defective network ethernet cable. And this issue/problem is more on the cable side, we suggest you check the cables and replace them with a new cable. Since RUCKUS has no part in fixing the issue related to cable installations.
Thank you again.
Please let me know if you have any queries in this regard.
Lennar Home Community.