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This question already has an answer here:

Here is link with the picture of the fan:

enter image description here

The fan name is "ZALMAN ZM-F3(SF) 120MM ULTRA QUIET FAN"

I looked it up online, but I don't understand, I'm colourblind and it's difficult to distinguish the colors.

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marked as duplicate by JRE, winny, SamGibson, Elliot Alderson, Dmitry Grigoryev Nov 26 '18 at 8:48

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • \$\begingroup\$ We can take educated guesses, but it's impossible to know without knowing where that fan connected to! If it's just a PC fan, you can certainly look up "PC fan pinout" ;) \$\endgroup\$ – Marcus Müller Nov 23 '18 at 19:55
  • \$\begingroup\$ Well, the wires are black and white, so color isn't a problem. It's a PC fan, so look up how they are wire. That's a keyed connector, so you can find pin 1 if you match it to a drawing. \$\endgroup\$ – JRE Nov 23 '18 at 21:14
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    \$\begingroup\$ The linked (and closed) duplicate shows you the connections. You don't need the colors. Look at where the pins are in relation to the shape of the connector. \$\endgroup\$ – JRE Nov 23 '18 at 21:17
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Here is a nice black-and-white illustration that shows the pinout of

  • 3 pin connectors (so-called DC fans), to the left
  • 4 pin connectors (PWM controlled fans), to the right

PC fan header pinout

(Image from here.)

See also the duplicate post linked in the comments.

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