Quote:While their PCBs and schematics are not identical, the functionality is the same. for all.
Over and over and over and over we wee people thinking because they plug a PWM fan into a 4-pin fan header and it's speed is regulated that it is functioning on PWM. This is not true. PWM fans change speed with variable voltage on pin-2 or with PWM signal on pin-4 and fixed 12v on pin-2.
PWm fan headers supply constant 12v power on pin-2 .. same as PWM splitter with PSU power connectors do.
Phanteks fan header is not a PWM fan hub. It is a PWM controlled 3=pin variable voltage fan hub.
Here is how the wiring of a PWM fan works .. same as PWM splitter with PSU power connector. You can test a 4-pin fan header using PSU 12v power and mobo PWM signal this way to determine if the header is truly a PWM header.
Here is another link to PWM control
Using a Phanteks PWM controlled hub requires a true PWM signal from motherboard fan header pin-4.