I always aim for a stealth mod, so that it still looks standard but operates quieter, cooler and hopefully more reliable. As with any mods, i'm not responsible if you try and damage something, and electricity bites. I had previously modded what I thought was the most restrictive part of the PS4 Pro, being the power supply, both inlet and outlet side. The other day my kid downloaded Apex Legends, and as I watched him play, I heard the PS about to take off. (Had previously applied Arctic Siler 5) And with it installed, small fingers may be able to touch bitey things, maybe. Looked online, and only found that ppls drill holes above the fan, or add heatsinks. Found dust on one side of the intake, but due to restrictive mesh on the other side, there was no dust, therefore less airflow. Above fan. Marked out. Some time with the die grinder. Refitted. Repasted the CPU/GPU, then let the kid have a bash on Apex after school. Running at a constant 59/60FPS Cooling fan considerably quieter, and moving the heat out the rear vent. So fan has enough capability to cool the system. This should also help keep the components cooler also. Verdict, success. Very happy with the reduction in noise and increase in cooling capacity. Pro tip, upgrade the HDD to a SSD, the pro has a much higher bandwidth than the non pro, so gains a decent improvement in performance.