Looks like you have two capacitors missing, the smd ceramic cap should have a tiny capacitance and the one on the left side of the picture should be an electrolytic with a larger capacitance(large electrolytic and small ceramic parallel to the circuit are a quite common design), the ceramic one should be 10uF(guessing high) and the electrolytic something 1000uF(also guessing high), i'm not sure about the capacitance, 16v for voltage rating should be good enough, assuming that it make part of the power filtering of the fan connector. but if someone have the board and can measure the capacitance of those caps it would be ideal.

@.legaCy

Thank you.
Actually I am recaping that board so I removed all the electrolytic capacitors.
The ceramic capacitor is in series with the electrolytic one on its left which is 22µF at 16V.
I don't know if I should expect any significant voltage drop resulting from the internal resistance of the ceramic capacitor, and if it's safe to go with a 16V.

pouty_sys_admin wrote:

@.legaCy […]
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@.legaCy

Thank you.
Actually I am recaping that board so I removed all the electrolytic capacitors.
The ceramic capacitor is in series with the electrolytic one on its left which is 22µF at 16V.
I don't know if I should expect any significant voltage drop resulting from the internal resistance of the ceramic capacitor, and if it's safe to go with a 16V.

well if the electrolytic is 22uF try a ceramic smd with 0.1uF

pouty_sys_admin wrote:

The ceramic capacitor is in series with the electrolytic one on its left which is 22µF at 16V.
I don't know if I should expect any significant voltage drop resulting from the internal resistance of the ceramic capacitor, and if it's safe to go with a 16V.

I'm assuming (perhaps incorrectly) that the positive of EC3 (the 22uF electrolytic) is on the +12V supply to the fan header.
If so, then I don't see how MC11 could be in series with that. It would just block the DC voltage and the fan wouldn't work.

From how it looks in the picture, I think those 2 caps are just sharing their ground connection. However, the caps could be in parallel.