Black cable to extend the PWM fan signal (30 cm) - also compatible with 3-pin fans.
Extend the range of any fan inside the enclosure with the extension cable extension provided here. The cable extends the signal path by more than 30 cm. It is compatible with 4-pin PWM fans, so it passes the pulse width modulation signal from the motherboard to the fan. In addition, you can also plug in normal 3-pin fans, which then run unregulated.