By output voltage: it can be divided into low-voltage (usually 5V or 12V), medium-voltage (usually 24V or 48V), and high-voltage (usually 100V or more) power modules.
By output power: can be divided into small power (usually a few watts to tens of watts) and high power (usually hundreds of watts to several kilowatts) power modules.
According to the type of output: can be divided into single output and multi-output power modules. Single output power supply modules have only one output port, while multi-output power supply modules can provide power to multiple devices at the same time.
According to the input voltage: it can be divided into AC input power modules and DC input power modules. AC input power modules can accept standard AC power input, while DC input power modules require DC power input.
By application field: it can be divided into industrial power supply module, communication power supply module, medical power supply module, military power supply module and so on.
In short, there are many ways to categorize AC-DC power modules, and different classifications apply to different occasions and needs.