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15346
Optiplex 3010 MT, 120mm fan
I've installed a 3 pin 120mm case fan into my 3010 MT and connected it to the empty FAN_SYS1 header. The fan spins when the machine boots then does nothing, even with fan control override set in bios. Either way the fan will not stay on. Will a standard case fan not run off these headers? I'm considering getting a Y-splitter for the rear exhaust fan (FAN_SYS2) and putting both on the same header. Any insight would be very helpful. Service tag is by the way
speedstep
9 Legend
9 Legend
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47K Posts
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July 31st, 2018 09:00
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 MB
Pin Number
Function
Dell wire color
Pin #
INTEL Fan wire color
Description
1
Sens (TACH)
White/Yellow
3
Green
Sens (TACH)
2
+12v
Red
2
Yellow
+12v
3
Gnd
Black
1
Black
Gnd
4
PWM
Blue
4
Blue
PWM
5
Key
unused
DELL FAN WIRING
Dippz
4 Posts
0
August 1st, 2018 10:00
Even with the 12v and tach wires reversed the fan will not spin. Tried FAN_SYS2 header and get a fan related error in bios as well. Is there a known workaround for using standard fans with a dell motherboard or am I going to have to buy a fan controller?
speedstep
9 Legend
9 Legend
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47K Posts
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August 1st, 2018 11:00
Plugging standard fan on reversed may have burnt out the fan AND may have burnt out the fan power on the motherboard and permanently damaged the sensor. Thats why I said self destruct.
You are also not paying attention to the order and the wires.
Its not 2 wires swapped its all 4.
Dellfans
devo343
7 Posts
0
January 1st, 2020 04:00
im having the same problem i bought a dell 3010 42p49 motherboard and put in a normal micro atx case
and it came with 2 3 pin standerd fans so i just need to swap the 12v and tach on a 3 pin connection and i should be good? i havent turned it on with the fan in the 3 pin connection so it shouldn't have burned https://imgur.com/a/LPucOtE out
savvy2
2 Intern
2 Intern
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2.5K Posts
0
January 1st, 2020 04:00
there is no standards here, (the trend for non OEM PC;s is here)
do not just throw any fan in to any PC, or wreck the fan or the mobo or both.
even when wired right using correct adaptors the dell sees the RPM wrong and fails with F1 hard errors
the cure is use only DELL FANS. OK?
if it don't fit do this.
see the end of this HS page for the many fan pinouts
PC rules, do not force connectors on wrong. if locked as many are do not force them off, use the lock lever.
do not wire things up to any mobo backwards, or BOOM happens , you let the smoke out.
there is 1 right way and 10,000 smoke ways, ask first , and prevent smoke. ok?
Dell assumes you use only dell parts, if you depart from that, you need to know how it works first.
or ask
devo343
7 Posts
0
January 1st, 2020 05:00
so i have to buy oem dell fans? and just rewiring the standerd fan isnt gonna work?
devo343
7 Posts
0
January 1st, 2020 05:00
bc if thats the case i might as well just buy a fan controller
devo343
7 Posts
0
January 1st, 2020 10:00
would one of these work with it
speedstep
9 Legend
9 Legend
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47K Posts
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January 2nd, 2020 09:00
3 wire fans may run but they will not be detected as valid.
For 3 wire they reverse 12v and tach.
Black Red White not
Black White Red
You must use 4 wire fan for a 4 wire fan.
Both 3 wire and 4 wire fans are not standard wiring.
Dell doesn't use non standard fans they have non standard wiring.
So you either use an adapter or you re wire the fan to work correctly.
https://www.amazon.com/Pocaton-Female-Socket-Connector-Cooling/dp/B073XJV5L9/
Dell 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. 3 wire DELL fans have the same issue where the pins are swapped.
Dell does not publish this. And some dells use standard wiring.
I believe this is correct.
YMMV
4pin PWM on 3 pin
Dell MB
Pin Number
Function
Dell wire color
Std Fan
Pin Number
Std Fan wire color
Description
1
Sens (TACH)
White/Yellow
3
Green
Sens (TACH)
2
+12v
Red
2
Yellow
+12v
3
Gnd
Black
1
Black
Gnd
4
PWM
Blue
4
Blue
PWM
5
Key
unused
DELL FAN WIRES AND COLORS
Dell does not use standard wiring or Pinouts on their fan headers.
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 MB
Pin Number
Function
Dell wire color
Pin #
INTEL Fan wire color
Description
1
Sens (TACH)
White/Yellow
3
Green
Sens (TACH)
2
+12v
Red
2
Yellow
+12v
3
Gnd
Black
1
Black
Gnd
4
PWM
Blue
4
Blue
PWM
5
Key
unused
DELL FAN WIRING
devo343
7 Posts
1
January 2nd, 2020 10:00
allright thx for the help i just bought a fan controller
Viggen66
1 Message
0
May 17th, 2021 12:00
Just wondering on a 3 pin fan standard atx plug, soldering reverse red yellow to meet Dell's standards plug will work, for a FAN_SYS2 to insert a second case fan, soldering is just a minute fix, will it fix it?