Fujitsu Futro
https://www.parkytowers.me.uk/thin/Futro/s900/
PoE Extension Port
It seems the weird PoE extension port is just PCIe
https://github.com/Krysio/Fujitsu-Futro-PoE
https://www.parkytowers.me.uk/thin/Futro/s720/links.shtml