External Power Supplies Accessories are power conversion devices that are not installed inside the device but are connected to the device by cable. The main function of this type of accessories is to convert external power sources such as mains or batteries into voltages and currents suitable for use by the internal circuits of the device. Common external power accessories include power adapters, chargers, external switching power supplies, etc. Internal Power Supplies Accessories are power conversion and management components that are installed directly on the internal circuit board of a device. These accessories are responsible for converting the original power supply from the external input into a stable, pure voltage for use in various parts of the equipment. Common internal power accessories include integrated power management chips, regulators, converters, etc.

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