I m having a special system fan type in my computer which is very noisy (between 60 to 75 Db with vendor provided fans). But if nothing is plugged on it the computer refuse to run.
Here a what the plug looks like on the fan
From the computer s doc (I wasn t able to find the fan specific model)
If pin 5 is linked to ground, the bmc will detect the fan as present, but this is not enough, so I tried to link pin 3 to pin 4 in order to fake rotation speed but the system still detects this as a faulting system fan (with message Lower Critical - going low - Asserted
) and refuse to run in that case as if no fans where plugged.
What can be the proper way to fake the fan presence? Or what s the name of that type of connector so I can buy an adpter which would let me running a much more silent/acceptable fan for my neighbors?