My motherboard has a connector to enable the use of a front panel RESET button:
I would like to simulate the press of the button (equivalent to short circuiting the wires) by a Raspberry Pi, by connecting one (or two) of the GPIO pins to this connector.
What does a short-circuiting do, from a signal perspective? The pins on the motherboard are noted
RES-, suggesting (wild guessing, which is never good in electronics) that the result is
0? Since GPIO voltage levels are 3.3 V and are not 5 V tolerant I would like to make sure that I am not going into a dangerous land (frying the RPi would be sad, the motherboard - disastrous).
As you certainly guessed, my electronics background is close to nil so thank you in advance for adapting the answer to a beginner entry level.