The main purpose of a PSU in a PC is to convert the AC, which is provided by the main voltage supply, to a low-voltage DC power for your computer's internal components. It is one of the most important parts of the computer responsible for delivering enough power to all the internal PC components to help them work most effectively. Many different types of power supplies are built with different voltage supply options and capabilities. Depending upon the type of PC you use at your home, the power supplies need to be rightly compatible and perfect. Some power supplies come with manual switches, whereas some have switched-mode for modern personal computers. Whatever the type may be, this section will help you get the most amazing one for your CPU as it contains the most exhaustive list of different power supplies.