Using the 3 power pins between aux and hdmi ports as 5v output to power a fan on the le potato, is it safe?
Dunno if it is safe but I’m using it for this purpose.
Yes, that connector was designed for a fan, SPDIF component, or other 5V power out like USB.
Got it, is there an output current limit on the gpio’s and the 5v pins?
Per the schematics, VCC5V is powered by AO_5V via a WPM2015. It should be able to supply around 2.2A of current but that is also shared with USB. If you are directly powering the board via the 5V header, it can supply around 3-4A.