DC 12V PWM Fan Temperature Controller 4-Wire Speed Controller Governor Board PC | eBay
EK-Cable Y-Splitter 3-Fan PWM (10cm) – EK Webshop
Amazon.com: PWM Fan Hub, 4-Pin Computer CPU/Case Fan Power Multi Splitter Connector Cable Adapter for Computer Cooler Fans : Electronics
PWM Cable (Female to Female - 20cm) - mindsensors.com
4 Pin PWM Male to 4 Pin PWM Female Ext. Cable Black – Coolerguys
PWM Cable (Female to Female - 20cm) - mindsensors.com
EK-Cable mini 4-pin to 2-pin PWM (500mm) – EK Webshop
4pin Fan Pwm Cable 1 To 2 Motherboard 4-pin Female To Pwm Fan 4-pin Male Multi-fan Temperature Control Extension Cable Fan Cable - Pc Hardware Cables & Adapters - AliExpress