@Virgo Yes a test it with different cables and the problem persist. How can i reset the tl-sg1008pe , the only way I know is to unplug de porwer cable.

I have a tl-sg1008pe switch which provides connectivity and POE between 2 Cambium CNPilot E400 APs and a Cisco SG-2600 Switch. One Cisco port connects to the tl-sg1008pe and two tl-sg1008pe ports...