I am asking again just to make sure. You mean manually soldering those two pins?yes, JP1 is where FAN can be connected. That is 5V MAX 0.15A. Make sure not to exceed MAX current.
Little drilled hole with tiny screw can hold a contact too. And without the soldering...any soldering will void warranty
Anyway I am soldering in routerboards too if necessary. Never broke a piece by that.I have about 5 mikrotik devices broken in about 10 years. Out of waranty. Who cares about mikrotik waranty if their devices doesn't brake?