Hot 1Pc 3/4 Pin Computer PC Fan Power Cable Connector Adapter 5V 30cm Connect 3pin or 4pin fan to USB Adapter Cables|Computer Cables & Connectors| - AliExpress
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1.25mm Pitch 4-pin Cable 20cm long 1:N Cable [Molex PicoBlade Compatible] : ID 4924 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits