Aerocool PWM Series Compatibility Manual

PWM Compatibility Guide - How To
To check motherboard compatibility with AeroCool PWM function, ensure your
motherboard header Pin No. 4 has listed FAN-SPEED-CONTROL and 12V on Pin 2.
Example from Asrock Z87 Fatal1ty, where Pin No. 4 - Fan_Speed_Control and Pin No. 2
is +12V. This will allow you to have PWM control through AeroCool Hub.
Note: RPM will not be displayed.
For additional motherboard configurations, please read below:

1. How to find out if a fan header on your motherboard supports PWM?

Some motherboards feature 4-pin fan headers that actually DO NOT use a PWM signal
on Pin No. 4 to control the fan speed but rather reduce the voltage on Pin No. 2 (also
known as DC mode). Modern motherboard fan headers would have dual control modes,
that allows you to select PWM or DC control mode.
Please refer to your motherboard manual to check whether your motherboard has 4-pin
fan headers that control the fan speed by reducing voltage on Pin 2 or PWM cycle/Speed
Control on Pin 4. See image below.
Look out for terms that may indicate the header is NOT using PWM, for example, if you see
"VCC" on Pin 4 or "Speed Control" on Pin 2, then we can be sure the header does not
support PWM.