USB to 3 / 4-Pin PWM 5V USB Sleeved Fan Power Adapter Cable with On / Off Swich

Conductor specification: 17x0.14TS. Conductor material: pure copper. Connector: One is USB port, another one is small 3 pin / 4 pin case fan power adapter cable port. The chassis fan uses this USB adapter cable, the fan speed will be reduced by 60%.