10 PC fans connecting simultaneously ALL ports support PWM function and the fan speed can be adjustedat the same time (only the speed of Fan 0 can be identified by the system.) Fixed by magnetic base, suitable for iron surface only. If 3-pin non-PWM fans are connected to this fan hub, this fan hub CANNOT give them extra PWM function. They will run at FULL SPEED. If 4-pin PWM fans are connected to this fan hub, DUTY RATIO of all PWM fans can be adjusted at the same time. That is, all PWM fans will run at the same DUTY RATIO. Only speed of Fan 0 can be identified by the system.
