After reading a lot of messages with the same issue I didnt find a proper solution to my problem.
My configuration is router with 600mbps service-->cat6e cable-->tl-sg105-->cat6e cable-->laptop
If I measure on the router ethernet port it gives me near 600mbps
If I measure on cable before it is connected to the tl-SG105 it gives me near 600mbps
If I measure after the tl-SG105 it gives me 100mbps. always.
And for sure if I measure on my laptop I only get 100mbps.
So the problem is not on the cable because it is cat6e and If I measure after 10 meters of cable before it goes to the tl-sg105 i get 600mbps.
The problem is only when I patch the cat6e on the tl-sg105. After patching it all is at 100mbps.
All the measurements was done with the cable I use to connect.
So it is the autonegociation on the TL-SG105? is it normal? (I dont think so)
Thanks and regards