Specifications:

1. Item: CPU Cooling Fan Power Cable
2. Length: 10cm
3. Interface: Large 4 Pin to 4 * 3 Pin (2 * 5V, 2 * 12V)

Features:

1. 4 Pin to 2-port 5V and 2-port 12V cooling fan adapter cable.
2. With this cable you can run two fans with 5 volts, instead of 12 volts, because most fans do not have their own regulator. The reduction leads to a quieter running noise and thus contributes to the reduction of the overall volume in the case. The other two fans run normally with 12 volts.

3. Please correctly connect the positive and negative poles before it is powered. 5V power: red line is the positive pole and black is the negative pole. 12V power: yellow line is the positive and black is the negative. 

Package Included:

1 * 10cm Large 4 Pin to 5V 12V CPU Cooling Fan Power Adapter Cable