Edited:  I see you have a 3010.

Dell is very proprietary, including with their fans.  Using a non-Dell fan could fry the fan.

The 92mm fan - Are you trying to use it on the heatsink?  Where are you trying to use the 120mm fan?  What brand is your fans?

Dell uses standard fans and the wires are swapped around in such a way that if you plug a standard fan onto the dell header you will fry the fan and the motherboard.

None of this is documented.

SOME models use standard wiring.

Some Models use all black wires so you cannot tell.

Dell Fan Wire  Black Red White or Yellow

Dell 3 wire fan

Dell 4 wire fan

Dell 5 wire fan

If you use adapter or re wire the standard fan to the way Dell does it there wont be any issues.

https://www.amazon.com/Pocaton-Female-Socket-Connector-Cooling/dp/B073XJV5L9

Dell sometimes swaps the wires around so that you will fry a dell fan on standard and the other way round.

It has 5 pins but only 4 wires are used.

Dell does not publish this. And some dells now use standard wiring.

I believe this is correct.

YMMV

4pin PWM on 3 pin

DELL FAN WIRES AND COLORS

Dell does not use standard wiring or Pinouts on their fan headers.

Dell fan wires are deliberately swapped round.

PWM and Tach and 12v and Ground.

For 3 wire they reverse 12v and tach. 

Black Red White not

Black White Red

DELL 3 PIN

This can lead to self destruction for a dell fan on standard motherboard or the other way round.

https://www.amazon.com/Dedicated-Adapter-Conversion-Cable-Dell/dp/B07F7CTMVZ

 https://www.walmart.com/ip/48729225

This is the CPU FAN for Example.

https://www.amazon.com/Dell-Optiplex-Processor-Aluminum-Heatsink/dp/B079YVX6HC

DELL FAN WIRING

It is shameful if Dell has made the fan header burn out a fan, or self destruct the motherboard, by clandestinely switching the standard wires. This is extortion. Why would a decent company like Dell resort to such low down tactics??

I'm not sure I believe this without proof.

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@donm4599x wrote:

It is shameful if Dell has made the fan header burn out a fan, or self destruct the motherboard, by clandestinely switching the standard wires. This is extortion. Why would a decent company like Dell resort to such low down tactics??

 

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So that you use their fans ... which are the correct type, voltage, amp-draw, rpm, CFM, etc.

unfortunately it is not possible for you to use a standard fan due to this motherboard having completely proprietary connections. i highly recommend you find an adapter or buy something that's not e-waste

no, dell makes proprietary parts to prevent a user from upgrading their pc. they want you to buy a new one. its really unfortunate that they do this as it is very wasteful. if you want to get a little more information on this i highly suggest looking it up

Does anyone know the voltage range of the PWM / Control wire (blue wire)?

I am currently using a 7070 mff.

well, I can now answer my questions in 2 parts after a day of testing on the 5040 I had in the scrap pile.

1. don't mess with the fan or wires only bad things happen as others have said. (fans no longer work)

2. checking the range with a voltmeter it looks like on the low side 1.9v and at near full temp 2.55v.

pc still boots but no fan will work on the stock header for some reason after I cut the blue wire to the leads of the fan side trying to artificially send more voltage to the fan, not the MB.

Tried another fan from the same model hooked up and still nothing.

@hctech​ I can also say that during testing the red wire kept showing me 5v.

maybe my voltmeter is bad. if I take my power controller it will run the fan from 3v all the way up to 12v with just black and red connected.

@speedstep​  Glad Wallmart link still works!  Can a Voltmeter be used to find the resistance of each before even plugging it in?