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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 ?

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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.

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    \$\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
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    \$\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
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    \$\begingroup\$ Neither do we. You need to search for it. Marcus may have given you a clue. \$\endgroup\$ – Transistor Mar 3 at 10:15
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    \$\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
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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.

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