I've ran into an issue, where I plug in UniFi AP-nanoHD into DGS-1210-08P (HW rev G1) and AP recieves power but link is down. However when i use included PoE injector from Ubiquity everything is ok (same port on switch, no additional configuration).
I'm quite new to managed switches and PoE thing so is there anything I should do in order to get link up?
Using PoE injector is not an option.