Hi Yalena!
Are you sure that the flans in slot 2 are really power to port? If these switches are right on top of another I'd be concerned that SLot 2 would be sending hot air through the chassis. What happens if you tell it to prefer port to power?
Just so you know, the command really doesn't do anything to adjust the direction of the airflow. It is built into the fans which direction they go.
For relatively recent switches, port to power fans have red handles and power to port have blue handles.
David