For fun, I tried buying a PoE+ injector to unlock full transmit power on 2.4GHz on my R710. I found that even with an injector that's advertised to be PoE+, the power mode still says 802.3af, not 802.3at.
Looking at the support article KB-5005, it looks like it's implying that PoE+ negotiation requires a PoE+ switch that speaks LLDP. Is this true? Is there any way to get the AP into PoE+ mode via an injector?https://support.ruckuswireless.com/answers/000005005