Synchronized power switching: This adapter board enables simultaneous switching of the main power supply and connected devices, and can handle multiple power supplies for coordinated on/off control. Safe and correct operation: The socket is made of plastic; hold the socket by hand before plugging in to avoid damage. When inserting the cable, ensure the insertion direction and the socket interior are correct to prevent reverse insertion that could burn the device. Efficient power handling: If the power supply interface is sufficient, multiple power supplies can be switched on and off at the same time. The design uses powerful transistor circuits to achieve low power consumption. Compact and easy to install: Small size for easy placement and integration into existing setups. Compatibility and usage scope: Applicable whenever the power supply interface is sufficient to support synchronized switching of multiple supplies and devices. Practical use scenarios: A PC setup where the computer's power state should synchronously control a connected device and the main power supply. Servers or NAS systems with multiple power supplies that require coordinated on/off cycling. Lab or test bench environments needing synchronized power switching across several power rails for quick testing and safe powerdowns.