ITEM NAME:4 Pin IDE 1-to-3 Molex IDE Power Supply Y Splitter Z4X2 Exentsion HOT Cable Q8Y0 Description&Preview.Connector: 4-pin IDE to 3 IDEs. Role: to solve large 4Pin interface line is not enough. Uses: The power plug (large 4P) is not enough, you can also be used to extend the chassis fan D port is not enough long enough, and so on.