@ArnanC In that case it's probably a HW issue and you probably should contact your local support for help.

@AshHudson88 TL-WA850RE supports only 2.4 Ghz band according to its tech specs - details, On the other hand make sure that you're with its latest firmware v1.0.13 - here.

@ArnanC If you don't have anything plugged in LAN 4 its status would be like in your screenshot. In LAN 2 you probably have plugged a device which can't sync on 1000mbps bandwidth. Plug that device...

@Madalinbv That's not possible. In the BE800 user guide (here): "The combo port pairs a RJ45 port with an SFP+ port. Only one port in the pair can be used at a time. RJ45 port: For connecting to your...

@TKoustenis Go through this thread to see why a RE cuts the speed in half.

@ArmanEsf Update your RE with its latest FW v1.0.13 from here and test again.