Phanteks Power Splitter Device For 1 P/S to 2 M/Bs, PH-PWSPR_1P2M, Retail Using the Power Splitter, a dual system configuration can operate independently of one another. Powering ON/OFF on one system will not affect the other and vice versa. As long as one system is running the power supply will be fully operational until both systems are off. Helps to protect and stabilize the voltage signal level and also enables the power supply 's various protection to prevent damage caused by inrush current surges.