1pcs 4-pin Molex To 3-pin Fan Power Cable Adapter Connector 12v*2 / 5v*2 Computer Cooling Fan Cables For Cpu Pc Case Fan - Pc Hardware Cables & Adapters - AliExpress
Adapter 3Pin (12V) auf 4Pin (12V) | Fan cables & adaptors | Cables | Aquatuning USA
Molex connector safety | Overclock.net
Delock Products 85516 Delock Cable Power supply Molex 4 pin male > 4 x 2 pin fan (12 V / 7 V / 5 V) 20 cm