4-Pin Molex to 3-Pin Fan Adapter Cable (CAB177) ModMyMods.com - PC Watercooling Parts and Accessories
PC 4-Pin Molex/IDE to 3-Pin CPU/Chasis/Case Fan Power Cable Adapter Connector - Walmart.com
Amazon.com: Molex to 3Pin/4Pin Fan Adapter, 12V PC Fan Adapter 4Pin Molex to 4 PWM Splitter Sleeved Braided Cable UIInosoo for 3 Pin or 4 Pin Computer PC Case Fan Power Supply
Amazon.com: ELECTOP 2 Pack 3 Pin ATX Fan to 4 Pin Molex Connector Cable Fan Power Adapter Cable : Electronics