The ICs used on the PCB are 4.3v compatible. Basically 4.3v is within the safe voltage signal for the IC. There is a diode on the voltage signal that turns 5V to 4.3v thus why these work and will not damage the console or the PCB.
All the other rumors, are rumors only, we stressed test for a long time and no problem whatsoever.
Another very good explanation:
https://www.youtube.com/watch?v=vv4T...ature=youtu.be