Cpu Fan Yellow Wire

Usually yellow or green color wire is used in a 3 wire fan for the pulse output tacho connection.

Rechargeable fan karachi olx. The answer to your question is no. Fans and on board fan headers are backwards compatible. A pc fans wire colors are pretty consistent with red almost invariably marking the positive and black marking the negative or ground.

The third wire varies depending on the manufacturer but usually it is blue or yellow. Of course all you need is the red and black wire to run your computer fan but if you didnt know what the extra wires are for this video may help you out. On these 4 wire computer fans i have found that some times they require an input to tell it how fast to spin so simply supplying power to 2 of the wires will not work if you have a 3 wire fan however you can supply power to the red and black and leave the white disconnected.

Depends what the yellow wire is for. Thus instead of using the colors to distinguish the function better try to study the internal wiring connection. Simply connect yellow and red to 12v and the fan will run.

4 pin connectors are usually used by cpu fans with higher power consumption. If its merely to tell how fast the fan is spinning then no because the yellow wire has no way of setting the resistance it just tells the computer or circit connected to it how fast the fan is going the motherboard or separate fan controller has a variable resistor. You dont need it to make the fan turn but the third wire is there for a good reason.