4-Pin PWM Male Fan Connector to 4-Pin Female Mini GPU Fan Connector Adapter Cable - FrozenCPU.com
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3/4-Pin Fan Connector (Male) to 4-Pin GPU Mini Fan Connector (Female) - All Black (CAB152) ModMyMods.com - PC Watercooling Parts and Accessories
4 Pin PWM Fan Connector Male to 3 Pin Mini GPU Fan Connector Female - modDIY.com