Need some help with wires

[ThunderShark0021]

I Got a PC Fan With a  4pin connector and a want to change it to usb fan but i got blue black Green Yellow Wires and no Red What should i do ?? Please help me As soon as possible :'(

[LogicalDrm]

Wires in PWM fans are power (PWR), ground (GND), RPM and PWM. Since you aim to power only, you need only PWR and GND wires. If you wrote them there in correct order, right ones are blue and black. You can cross reference if thats correct by checking how header fits to mobo.

[pwizza]

pro tip

 

add the word pinout to your web search when you don't know how to wire something

 

click here

[W-L]

I Got a PC Fan With a  4pin connector and a want to change it to usb fan but i got blue black Green Yellow Wires and no Red What should i do ?? Please help me As soon as possible :'(

 

Welcome to the Forums!

 

Here's a diagram of the 4 pin pinout but note that USB can only provide 5V @0.5-1.0Amps of power so the fan will be running at a lower speed due to the voltage.

[ThunderShark0021]

thanks everybody for your help