Hi,
I do not think anyone has this model, there's a previous thread: OpenWrt on Ubiquiti EdgeMAX PoE-5
That thread confirms it's a Cavium processor and is slower than the Edgerouter X series, the ER-X are supported, and the ER-X-SFP & EP-R6 both support PoE on all ports: https://openwrt.org/toh/ubiquiti/ubiquiti_edgerouter_x_er-x_ka