10cm PWM mini 4pin fan to mirco 4pin Power Adapter Black Cable for Videocard VGA Graphics Card - AliExpress
Amazon.com: ARCTIC 4-Pin PWM PC Fan Splitter Cable - PST Extension-Cable for 4 Case Fans, PC Fans, PWM Splitter Cable, Multi-fan Connector, Fan Splitter, Extension Cable, Splitter, Y-splitter, Adapter, PC - Black :
GeekerChip 4-Pin PWM-Lüfternabe,6-Port Lüfternabe,4-Pin-Stecker für PC-Lüfter Hub,4 PIN PWM Lüfter Splitter Kabel,Geeignet für Computer PC Lüfterkabel: Amazon.de: Computer & Zubehör