Model :

Hardware Version :

Firmware Version :



I have connected the TP-Link 8-port Gigabit Smart PoE Switch with 2 SFP Slots Model No. TL-SG2210P to my Biostar TB250-BTC Pro, the lights of the switch go off and the lan port of the mainboard isn't working anymore.
Tested second mainboard, an Asrock H110 Pro BTC+ and same thing, LAN port from this mainboard also fried.
What to do? how to fix the mainboards? What happenend and what part of the mainboard died?
The switch seems to be fine and is connecting normally to a raspberry pi, some sip phones and poe camera's.