USB to 3-Pin / 4-Pin PWM 5V CPU for Case Fan Connector Power Adapter Cable with ON / Off Toggle 40cm / 15.75in

Function: This cable is 5V USB port to small 3-pin 4-pin fan cable with switch, it allows you to power most for case fans by using a USB connection, 3pin or 4pin for case fan power adapter cable both OK, you can turn on/off any for time by switch. Connector: One is USB port, another one is small 3 pin 4 pin for case fan power adapter cable port. Cable length: about 40cm 15.75inch. USB to 3-Pin 4-Pin PWM 5V CPU for Case Fan Connector Power Adapter Cable with ON Off Toggle, 40cm 15.75in. Features: brand new and high quality. Function: This cable is 5V USB port to small 3-pin 4-pin fan cable with switch, it allows you to power most for case fans by using a USB connection, 3pin or 4pin for case fan power adapter cable both OK, you can turn on/off any for time by switch. Connector: One is USB port, another one is small 3 pin 4 pin for case fan power adapter cable port. Cable length: about 40cm 15.75inch. Fan must have a start voltage at or below 5V fans with a higher start voltage will NOT