6 Inch 3-pin to 4-pin Pass-Through Adapter
The purpose of this pass-through adapter cable is to attach a 3-pin computer fan or 3-pin CPU cooler to the computer's 4-pin Molex power supply connector, while allowing the power supply connector the option of connecting another device with the second 4-in Molex connector.
To Power 3 Pin Fans
Converts 3 Pin Fans to 4 Pin Power...if you have a 3-pin fan (or CPU cooler) that you want to connect to a 4-pin power connector, this adapter will do the trick.
|3-Pin Fan to 4-Pin Power Pass-Through Adapter Specifications|