2 Pack 3-Pin ATX Fan to 4-Pin Molex Connector Cable Fan Power Adapter, 4-pin Molex/IDE to 3 Pin CPU Fan Power Cable : Electronics - Amazon.com
8 inch Molex 4pin to 3pin TX3 CPU / Case Fan Male Power Adapter Converter Cable w/ 4inch Molex 4pin Female Extension Port Saver - Newegg.com
Amazon.com: OPSFALCON 2 Pack 4-Pin Molex (Actual 2-Pin) to 2 x 3 Pin / 4 Pin PMW 12V PC Case Fan Power Adapter Cable, 3-Pin or 4-Pin (PWM Connector) to Molex Computer
Molex Mini-Fit Jr. 5557 - 4.2 mm Female 3 Pins Connector - Similar MF42-HF-03 - 39-01-4030
1.25mm Pitch 3-pin Cable Matching Pair - 40cm long [Molex PicoBlade Compatible] : ID 4721 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: ExtremeMod 4 Pin Molex to 2 x 3 Pin Male Computer Case Fan Power Connector Y-Splitter Adapter Cable : Electronics
4 Pin Molex Connector Male to Standard 3 Pin Fan Connector Male - MODDIY
2pcs 20cm 4 Pin Molex Ide To 3 Pin Pc Computer Cpu Case Fan Power Connector Cable Adapter Aqjg - Pc Hardware Cables & Adapters - AliExpress
modDIY Male/Female 3-Pin Fan Molex Connector Pair (Black) with Pins - MODDIY