Re: PoE PD Port Fortiswitch 108E
I realize this post is nearly a year old, but if you're still looking for an answer, I believe I have it.
No, the FS-108E does not support PoE. There is a FS-108E-POE model that has 4 PoE ports, but it sounds like that isn't what you have.
The PoE PD port on the FS-108E can be a consumer of PoE, but does not provide it. That port is able to be connected to an upstream switch that has PoE in order to power the switch without having the power cable plugged in on the back.