I have bought today brand new hAP ac² and its amazing when it comes to performance ( except glitchy 5 GHz wifi but hopes it will get fixed ), BUT it tends to get noisy when theres any WiFi transfer going on, its much more noisy on 5 GHz ( same transfer speed as in 2,4 GHz ), the sounds it makes are sort of hissing noises coming from unit itself, is it normal for this model or the one I bought have defect ?
For comparison I have RB951G and its totally noiseless. ( except when using its speaker )
When I am using cable connection on hAP ac² its generally noiseless.
I checked power supply using multimeter as I was reading sometimes its due to bad power supply, and multimeter showed 23.4V ( its 24V power supply ), it should be fine then ?