Connect two 4-pin (PWM) Fans to a Single Motherboard Fan Power Connector. The FAN4SPLIT12 Fan Power Splitter Cable enables you to connect two 4-pin (PWM) fans to a single motherboard power connector, which allows you to optimize your computer cooling capability.Providing a flexible way to position computer case fans as needed, this 4-pin Fan Power Splitter cable offers a connection length of 1ft, eliminating the need to strain the connection between the computer power connector and the fans.