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
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EK Water Blocks EK-Cable Y-Splitter 3-Fan PWM Cable with Sleeve 10cm, Black : Amazon.co.uk: Computers & Accessories