I have intel dc 12v cpu fan (removed from a computer) that has 4 wires (Black Yellow Green Blue) (Model E97379) [Photo- http://www.filetolink.com/c50ea25682 ]

I want to power it by ac to dc 12v adapter.

What wires i should connect to my adapter ?


closed as off-topic by Leon Heller, Marcus Müller, Edgar Brown, Elliot Alderson, Voltage Spike Mar 7 at 2:44

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions on the use of electronic devices are off-topic as this site is intended specifically for questions on electronics design." – Leon Heller, Marcus Müller, Edgar Brown, Elliot Alderson, Voltage Spike
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    \$\begingroup\$ Can you find a datasheet link for the fan and edit the link into your question? \$\endgroup\$ – Transistor Mar 3 at 9:47
  • \$\begingroup\$ @Transistor i cant understand \$\endgroup\$ – ghost21blade Mar 3 at 10:00
  • 1
    \$\begingroup\$ @ghost21blade he's asking you to supply a datasheet. Electronic devices come with datasheets. Anyway, this question could have answered with an actual amount of 20 seconds of using google image search with the term cpu fan pinout. \$\endgroup\$ – Marcus Müller Mar 3 at 10:09
  • 1
    \$\begingroup\$ Neither do we. You need to search for it. Marcus may have given you a clue. \$\endgroup\$ – Transistor Mar 3 at 10:15
  • 1
    \$\begingroup\$ It is enough. The fan will work. glkinst.com/cables/cable_pics/4_Wire_PWM_Spec.pdf \$\endgroup\$ – MartinF Mar 3 at 11:46

The wires are as follows:

Black - GND
Yellow - +12V
Green - O/C tachometer output
Blue - PWM input

If you just want the fan to spin at maximum speed, connect the black and yellow to your 12V power supply, and leave the other two unconnected.


Not the answer you're looking for? Browse other questions tagged or ask your own question.