Hey if I gamble with my PS4 pro is the extremely loud and I've tried it once and notice that the fan is much quieter is it ok if I leave my PS4 pro open when gambling? You can top off the lid!
But you can also create in the lid above the fan an opening with fan grille and dust protection, then you do not always need to take off the cover. This fan Mod is only to be recommended if the warranty has expired.